MODEL H7949/H7950/H7951
INSTRUCTION MANUAL
H7949 21/2
COIL NAILER
"
H7950 23/4
COIL NAILER
"
H7951
ROOFING NAILER
COPYRIGHT © DECEMBER, 2006 BY GRIZZLY INDUSTRIAL, INC.
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
#JC8623 PRINTED IN TAIWAN
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Safety Instructions For Pneumatic Tools
17. DISCONNECT TOOLS before ser-
vicing, changing accessories, or
moving to another location.
10. USE PROPER AIR HOSE for the
tool. Make sure your air hose is in
good condition and is long enough to
reach your work without stretching.
18. DO NOT OVERREACH. Keep
proper footing and balance at all
times.
11. WEAR PROPER APPAREL. Do not
wear loose clothing, gloves, neck-
ties, rings, bracelets, or other jew-
elry which may get caught in moving
parts. Non-slip footwear is recom-
mended. Wear a protective hair cov-
ering to contain long hair.
19. USE
THE
RECOMMENDED
ACCESSORIES. Consult owner’s
manual for recommended acces-
sories. The use of improper acces-
sories may cause risk of injury.
12. ALWAYS USE ANSI APPROVED
SAFETY GLASSES. Also use a
face or dust mask if cutting operation
is dusty. Everyday eyeglasses only
have impact resistant lenses, they
are NOT safety glasses.
20. CHECK FOR DAMAGED PARTS
BEFORE USING. Check for bind-
ing and alignment of parts, broken
parts, part mounting, loose bolts,
and any other conditions that may
affect machine operation. Repair or
replace damaged parts.
13. ALWAYS WEAR ANSI APPROVED
HEARING PROTECTION.
21. NEVER LEAVE UNATTENDED
TOOL CONNECTED TO AIR.
Disconnect the air hose and do not
leave tool until it is relieved of any
built up pressure.
14. SECURE WORK. Use clamps or a
vise to hold work when practical. It is
safer than using your hand and frees
both hands to operate tool.
22. NEVER ALLOW UNTRAINED
USERS TO USE THIS TOOL
WHILE UNSUPERVISED.
15. MAINTAIN TOOLS WITH CARE.
Keep tools lubricated and clean
for best and safest performance.
Follow instructions for lubricating
and changing accessories.
23. IF YOU ARE UNSURE OF THE
INTENDED OPERATION, STOP
USING THE TOOL. Seek formal
training or research books or maga-
zines that specialize in pneumatic
tools.
16. REDUCE
THE
RISK
OF
UNINTENTIONAL STARTING. Do
not carry tool with hand on trig-
ger and always disconnect from air
when not in use.
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Additional Safety Instructions for Nailers
1. HAND INJURIES: Do not place
your hands near the nail point
of entry. A nail can deflect and
tear through the surface of the
workpiece, puncturing your hand
or fingers.
5. COMPRESSED AIR RATING: Do
not connect the nailer to compressed
air that exceeds 120 PSI.
6. CHECK VALVE: Do not use a check
valve or any other fitting that allows
air to remain in the tool.
2. COMBUSTIBLE GASES: Never
connect the nailer to pressur-
ized oxygen or other combustible
gases as a power source. Only
use filtered, lubricated, and regu-
lated compressed air.
7. CLEANING: Never use gasoline or
other flammable liquids to clean the
nailer; vapors in the nailer may ignite
by a spark and cause the nailer to
explode.
3. SAFE HANDLING: Never point
the nailer at others! Do not keep
the trigger pulled when loading
fasteners, carrying, or holding tool.
Carry the nailer only by the handle,
never by any other part. Do not
carry the nailer by the air hose.
Disconnect the nailer from the air
hose when going up and down
ladders.
8. OPERATING QUESTIONS: If you
are not sure about the intended
operation, stop using the nailer.
Seek formal training or research
sources that specialize in pneumatic
tools.
9. MAINTENANCE: Always disconnect
air from the nailer when servicing or
installing nails. During adjustments
or maintenance, a nailer connected
to air may fire accidentally, causing
serious personal injury.
4. AIR HOSE: Make sure your air
hose is designed for the tool in
use, is in good condition, and is
long enough to reach your work
without stretching. However, an
overly long air hose in the work
area may be a tripping hazard.
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Never point this nailer at yourself or
another person! Always pay attention
to the direction this nailer is pointed.
Use this tool with respect and caution
to lessen the possibility of operator or
bystander injury. Ignoring this warning
may result in serious personal injury.
Operating this nailer can propel
objects into the air, causing imme-
diate eye damage. To protect your-
self, always wear American National
Standards Institute (ANSI) approved
safety glasses or goggles when oper-
ating this equipment. In addition, the
intensity of sound made by this nailer
at discharge can reach 90 decibels.
To protect your hearing, always wear
ANSI approved ear protection when
operating this nailer.
Nailer accidents routinely happen
while moving the gun to another loca-
tion, such as up ladders, to another
room, or even another job site. Always
disconnect the gun immediately after
use and never transport the gun while
connected to the air—even if the air
compressor is disconnected from its
power source!
No list of safety guidelines can be
complete. Every shop environment is
different. Always consider safety first,
as it applies to your individual working
conditions. Use this and other tools
with caution and respect. Failure to
do so could result in serious personal
injury, damage to equipment or poor
work results.
Read the manual before operation.
Become familiar with these nailers,
their safety instructions, and opera-
tion before beginning any work.
Serious personal injury may result if
safety or operational information is
not understood or followed.
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INTRODUCTION
Foreword
Model H7951
Specifications
We are proud to offer the Grizzly Model
H7949/H7950/H7951 Nailer. This nailer
is part of a growing Grizzly family of fine
pneumatic tools. When used according
to the guidelines in this manual, you can
expect years of trouble-free, enjoyable
operation and proof of Grizzly’s commit-
ment to customer satisfaction.
Nail Type ..................Flat Wire Welded Coil
Nail Length .................................... 3/4"–13/4
"
Magazine Capacity.............. 250–400 Nails
Weight .............................................5.5 lbs.
Air Inlet ..........................................1/4" NPT.
Operating Pressure ................. 70–110 PSI
The specifications and photographs in this
manual represent Model H7949/H7950/
H7951 as supplied when this manual was
prepared. However, owing to Grizzly’s pol-
icy of continuous improvement, changes
may be made at any time with no obliga-
tion on the part of Grizzly.
Contact Info
If you have any comments regarding this
manual, please write to us at the following
address:
Grizzly Industrial, Inc.
C/O Technical Documentation Manager
P.O. Box 2069
Model H7949
Specifications
Bellingham, WA 98227-2069
Email: [email protected]
Most importantly, we stand behind our
tools. If you have any service questions or
parts requests, please call or write us at
the location listed below.
Nail Type ..................Flat Wire Welded Coil
Nail Length .................................. 11/2"–21/2
"
Magazine Capacity.............. 250–400 Nails
Weight .............................................5.5 lbs.
Air Inlet ..........................................1/4" NPT.
Operating Pressure ................. 70–110 PSI
Grizzly Industrial, Inc.
1203 Lycoming Mall Circle
Muncy, PA 17756
Phone: (570) 546-9663
Fax: (800) 438-5901
E-Mail: [email protected]
Model H7950
Specifications
Nail Type ..................Flat Wire Welded Coil
Nail Length .................................. 11/2"–23/4
"
Magazine Capacity.............. 250–400 Nails
Weight .............................................6.2 lbs.
Air Inlet ..........................................1/4" NPT.
Operating Pressure ................. 70–110 PSI
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SETUP
Inventory
Unpacking
Your Model H7949/H7950/H7951 left our
warehouse in a carefully packed box. If
you discover the nailer is damaged after
you have signed for delivery, please imme-
diately call Customer Service at (570) 546-
9663 for advice.
After you open the nailer box, you should
find the following.
Model H7949/H7950/H7951 Inventory
(Figure 1)
A. Nailer.................................................. 1
B. Nailer Case ........................................ 1
C. O-Rings.............................................. 2
D. Pneumatic Tool Oil ............................ 1
E. Hex Wrenches 4, 5mm .............1 Each
F. Interchangeable Nose Tips (not
shown) ............................................... 3
Save the containers and all packing mate-
rials for possible inspection by the car-
rier or its agent. Otherwise, filing a freight
claim can be difficult.
When you are completely satisfied with
the condition of the shipment, you should
inventory the equipment.
B
A
D
C
E
Figure 1. Model H7949/H7950/H7951 inventory.
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Check the current Grizzly catalog for avail-
ability of this unit. If you plan on install-
ing a filter/lubricator/regulator unit in your
compressed air system, always follow the
connection instructions that come with
the unit.
Compressed Air
System
The Model H7949/H7950/H7951 is
designed to be operated at 70–110 PSI
using clean, dry, regulated, compressed
air. DO NOT exceed 120 PSI.
Exceeding the maximum permissible
operating pressure may damage the
seals, gaskets and hammer mecha-
nism of your nailer. DO NOT allow
your air compressor to exceed the
recommended pressure when con-
nected to this nailer or serious per-
sonal injury may result!
Before using your new nailer, set the air
pressure on your regulator to the mini-
mum PSI for your model.
An in-line filter/lubricator/regulator unit,
depicted in Figure 2, can be installed and
should be located as close to the nailer
as possible.
This filter/lubricator/regulator unit will pro-
tect your tool from damaging water build-
up, allow you to adjust and maintain con-
stant air pressure to your tool, and save
you the inconvenience of manually lubri-
cating your tool every time you use it.
Quick
Connector
Quick
Connector
Lubricator
Regulator
Your
Tool
Air
Compressor
Quick
Coupler
Quick
Coupler
Air Hose
Filter
Figure 2. Typical filter/lubricator/regulator installation order.
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5. Without pressing the trigger, depress
the safety nose mechanism against a
scrap piece of wood that is clean and
free of any knots, nails, or other foreign
objects.
Testing Safety Nose
Mechanism
A safety mechanism (bump fire) on the
nose of the nailer protects against acci-
dental firing. This mechanism is activated
when nails are loaded into the magazine.
The nailer will not fire when the trigger
is pulled until the safety nose is fully
depressed.
— If the nailer does not fire, then the
safety nose mechanism is working
correctly.
— If the nailer does fire when you
depress the safety nose, immedi-
ately disconnect the nailer from the
air supply and call Grizzly Technical
Support at (570) 546-9663 for help.
Before you use your nailer for the first
time, check the safety nose mechanism
to ensure proper function.
6. Without depressing the safety nose,
point the nailer in a safe direction, and
pull the trigger.
The safety mechanism is a mechanical
device that can fail. Never rely on this
mechanism as an excuse to point the
nailer at yourself or any bystanders.
Serious injury may occur.
— If the nailer does not fire, then the
safety nose mechanism is working
correctly.
— If the nailer does fire when the
trigger is pulled, without the safety
nose mechanism being depressed,
immediately disconnect the nailer
from the air supply and call Grizzly
Technical Support at (570) 546-
9663 for help.
To verify that the safety nose is working
correctly:
1. DISCONNECT NAILER FROM THE
AIR SUPPLY!
2. Insert a coil of nails in the magazine
(see Page 8 for instructions).
3. Make sure the trigger and the safety
nose mechanism move up and down
without sticking.
4. Connect the nailer to the air supply.
Point the nailer away from you and
others when connecting the air supply.
The nailer can cycle and discharge a
nail when the air supply is connected.
Ignoring this warning may result in
serious personal injury.
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OPERATIONS
3. Press the adjusting pin inside the
magazine and slide the plate up or
down until the plate position matches
the nail length as shown in Figure 4.
Model H7949/H7950
Loading Nails
Note: The plate must be set at the
proper height or the nails will not feed
smoothly into firing position.
Use nails meeting the specifications listed
for your nailer on Page 4 of this manual.
To load nails in your nailer:
Nail Length
Marks
1. DISCONNECT NAILER FROM THE
AIR SUPPLY!
Magazine
Plate
Adjusting
Pin
Point the nailer away from you and
others when connecting the air supply.
The nailer can cycle and discharge a
nail when the air supply is connected.
Ignoring this warning may result in
serious personal injury.
Figure 4. Positioning the magazine plate.
4. Place the nail coil into the magazine
and uncoil enough nails to reach the
driving hole as shown in Figure 5.
2. Pull the magazine open from the cover
tab as shown in Figure 3.
Magazine
Cover Tab
Driving
Hole
Figure 5. Loading nails in the magazine.
Figure 3. Opening the magazine: Model
H7949/H7950.
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5. Put the first nail into the driving hole
and the second nail between the two
pawls of the feeder as shown in Figure
6.
Magazine
Feeder
Pawls
Cover Lock
Figure 7. Unlatching the magazine cover
lock: Model H7951.
3. Press the adjusting pin inside the mag-
azine and slide the plate up or down
until the plate position matches the nail
length (Figure 8).
Figure 6. Putting the nails in firing
position.
6. Close and latch the magazine cover.
Nail Length
Marks
Model H7951
Loading Nails
Magazine
Plate
Adjusting
Pin
Use nails meeting the specifications listed
for your nailer on Page 4 of this manual.
Figure 8. Positioning the magazine plate.
4. Place a coil of nails in the magazine,
position the first nail in the pawls of
the feeder as shown in Figure 9, then
close and latch the magazine cover.
To load nails in your nailer:
1. DISCONNECT NAILER FROM THE
AIR SUPPLY!
Feeder
Pawls
Point the nailer away from you and
others when connecting the air supply.
The nailer can cycle and discharge a
nail when the air supply is connected.
Ignoring this warning may result in
serious personal injury.
Figure 9. Putting the nails in firing
2. Unlatch the cover lock, as shown in
Figure 7, and pull the magazine cover
open.
position.
5. Close and latch the magazine cover.
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Rotating Exhaust
Cover
Unloading Nails
To remove unused nails:
The exhaust cover rotates as needed to
direct the exhaust away from you.
1. DISCONNECT NAILER FROM THE
AIR SUPPLY!
To rotate the exhaust cover:
2. Point the nailer away from you and all
bystanders.
1. Use the 4mm hex wrench to loosen the
exhaust cover cap screw as shown in
Figure 10.
3. Open the magazine cover (as shown
on Page 8) and lift the nails from maga-
zine.
4. Close the magazine cover to keep
the magazine assembly clean until the
nailer is reloaded.
Exhaust
Cap Screw
Figure 10. Loosening the exhaust cap
screw.
2. Rotate the exhaust cover by hand to
aim the exhaust port in the desired
direction.
3. Tighten the exhaust cover cap screw.
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4. Before pulling the trigger, make sure
your free hand and other body parts
are positioned out of the way of a
potential path of a nail in case of
deflection (illustrated below in Figure
11).
Using the Nailer
Read the manual before operation.
Become familiar with these nailers,
their safety instructions, and opera-
tion before beginning any work.
Serious personal injury may result if
safety or operational information is
not understood or followed.
Figure 11. Example of nail deflection.
Note: Deflection is caused when
grain irregularities, knots or foreign
objects inside the wood cause the
nail to change its path, resulting in
the nail puncturing the surface of the
workpiece.
Before you operate your nailer, place five
to six drops of air tool oil into the quick
connect fitting where the nailer connects
to the air supply.
Besides damaging your workpiece,
deflection can cause injury if your free
hand is securing the workpiece in the
location that the nail deflects.
To operate your nailer:
1. Connect the air supply to the quick
5. Pull the trigger.
connect fitting on your nailer.
— If the nail penetrates the wood to the
depth you want, continue with your
intended operations.
2. To test for proper nail penetration, hold
the nailer perpendicular to the surface
of a piece of clean scrap wood that is
thick enough for the length of nails you
have loaded.
— If the nail either went too far or not
far enough, adjust the depth of fire
by following the procedures listed on
Page 12.
3. Depress the safety nose mechanism
against your workpiece.
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Adjusting Depth
Clearing Jammed
Nails
To adjust the nail depth:
A jammed nail must be cleared before the
nailer is used again.
Adjusting the depth of nail penetration is
done by turning the adjustment knob locat-
ed near the trigger as shown in Figure 12.
To clear a jammed nail from the dis-
charge area:
Depth Adjustment
Knob
1. DISCONNECT NAILER FROM THE
AIR SUPPLY!
2. Remove all nails from the magazine.
3. Use a steel rod and hammer to tap the
jammed nail back into the magazine
driving hole as shown in Figure 13.
Figure 12. Depth adjustment knob.
1. DISCONNECT NAILER FROM THE
AIR SUPPLY!
Jammed Nail
2. Turn the depth adjustment knob to
increase or decrease nail penetration:
— If you want to increase the nail
depth, then turn the adjusting knob
counterclockwise.
Figure 13. Tapping a jammed nail back
into the magazine driving hole.
— If you want to decrease the nail
depth, then turn the adjusting knob
clockwise.
4. Use a screwdriver to pry the jammed
nail out of the driving hole as shown in
Figure 14.
3. Connect the nailer to the air supply,
test the nail depth, and repeat this
entire procedure if necessary until the
nail depth is satisfactory.
Figure 14. Prying a jammed nail from the
driving hole.
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4. Push the top of the piston down with
your finger as far as it will go; this will
push the piston driver into the nose of
the nailer.
Replacing
Pistons/O-Rings
5. Insert a stiff rod or wire of the same
diameter as your nails into the dis-
charge area of the nose and use it
to push the piston driver up until the
piston head clears the top of the cyl-
inder. (Be careful not to scratch the
discharge area or the piston cylinder.)
If you need to replace piston parts in your
nailer, you can purchase a piston repair kit
from Grizzly: call 1-800-523-4777.
The Piston Repair Kit part number for
Model H7949 is PH7949103; the Piston
Repair Kit part number for Model H7950
is PH7950103; the Piston Repair Kit part
number for Model H7951 is PH7951104.
6. Grip the piston head by hand and
remove the piston assembly from the
cylinder.
Refer to the parts breakdown during this
procedure to identify parts and their loca-
tions inside the nailer.
7. Clean all metal parts with an auto-
motive grade solvent. Clear all ports
and blow the solvent away with com-
pressed air.
8. Replace any part that shows damage
of heavy wear. Relubricate the tool.
9. Apply a thin film of the nailer lubricat-
ing oil on the new O-ring and place
it on the new piston. Install any other
parts included in the piston repair kit.
Always disconnect the air supply
from the nailer whenever servicing!
During maintenance, a nailer con-
nected to air may fire accidentally,
causing serious personal injury!
10. Insert the new piston in the cylinder.
With the magazine cover open, gently
push the piston down to make sure the
piston driver moves freely into the driv-
ing hole.
To replace a piston and O-ring(s):
Note: DO NOT force the piston into
the cylinder! If the piston 'hangs' in the
cylinder, double check the fit between
piston and O-ring and imake sure the
cylinder is clean.
1. DISCONNECT NAILER FROM THE
AIR SUPPLY!
2. Remove all nails from the magazine.
11. Make sure that the cap gasket is in
place, then secure the cap to the nailer
body by tightening the 4 cap screws.
3. Remove the four screws that secure
the nailer cap and remove the cylinder
cap.
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CLEANING & LUBRICATING
Cleaning
Lubricating
Special pneumatic tool oil has been
included with your new Grizzly nailer to
help maintain its useful life. Place two to
six drops of oil in the nailer air inlet (as
shown in Figure 15) every 2 hours of
continuous use.
Use an automotive grade solvent such as
Sprayway C-60® (G2544 in the Grizzly
catalog) to clean the nose assembly of the
nailer. Always be sure that the nailer is dry
before using it again.
Do not allow dust, chips, or sand into the
air connectors or into the body of the nail-
er; this may result in leaks and damage to
the nailer and the air couplings.
Wipe off any excess oil near the nailer
exhaust to avoid dust build-up. When
the oil that was included with your nailer
has been completely used, replace with
Grizzly Model G2820 Pneumatic Tool Oil.
An efficient alternative to oiling your tool
by hand is to install a lubricator in your air
compressor line. If your air compressor
line already has a lubricator, then regular
lubrication of your nailer will not be neces-
sary. Just make sure there is always oil in
the lubricator.
Never use gasoline to clean this tool.
Use extreme caution when using any
solvent cleaner. Always clean the tool
in a well-ventilated area and never if
sparks or open flames are present.
Remember that electrical machinery
can produce sparks during normal
operation. Ignoring this warning can
cause serious personal injury or even
death!
Figure 15. Lubricating the nailer at the
air inlet.
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H7949 PARTS BREAKDOWN
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H7949 PARTS LIST
PAGE 1 OF 2
REF PART #
DESCRIPTION
FLAT HD CAP SCR M6-1 X 20
REF PART #
DESCRIPTION
1
2
3
4
5
6
7
8
9
PFH55M
40 PH7949040 STEPPED PIN
41 PH7949041 O-RING
PH7949002 FRONT BRACKET
PH7949003 EXHAUST COVER
PH7949004 EXHAUST FILTER
PH7949005 EXHAUST FILTER PLATE
42 PH7949042 FEED PISTON
43 PH7949043 O-RING
44 PH7949044 SPRING
PSB38M
CAP SCREW M5-.8 X 25
45 PH7949045 SPRING
PH7949007 CAP
46 PH7949046 FEED PISTON STOP
47 PH7949047 SPRING COLLAR
48 PH7949048 O-RING
PH7949008 SPRING
PH7949009 WASHER
10 PH7949010 O-RING
11 PH7949011 PISTON HEAD VALVE
12 PH7949012 O-RING
13 PH7949013 SEAL
49 PH7949049 STEPPED PIN
50 PH7949050 RATCHET
51 PH7949051 SPRING
52 PH7949052 DOOR
14 PH7949014 PLAIN WASHER
15 PH7949015 PISTON STOPPER
16 PH7949016 O-RING
17 PH7949017 PISTON
18 PH7949018 DRIVER
19 PH7949019 CYLINDER
20 PH7949020 O-RING
21 PH7949021 CYLINDER RING
22 PH7949022 COLLAR
23 PH7949023 O-RING
24 PH7949024 GASKET
25 PH7949025 BODY
53 PH7949053 NAIL SUPPORT
54 PH7949054 SPRING
55 PH7949055 SET SHAFT
56 PH7949056 SLIDE ROD
57 PH7949057 MAGAZINE
58 PSBS09M
59 PSB15M
60 PLN02M
BUTTON HD CAP SCR M5-.8 X 12
CAP SCREW M5-.8 X 20
LOCK NUT M5-.8
61 PH7949061 MAGAZINE COVER
62 PRP42M ROLL PIN 3 X 20
63 PH7949063 RUBBER INSERT
64 PH7949064 SAFETY LEVER
65 PH7949065 DUST COVER
26 PH7949026 PAD
27 PH7949027 O-RING
28 PH7949028 BOTTOM BUMPER
29 PH7949029 O-RING
30 PH7949030 NOSE
66 PW03M
FLAT WASHER 6MM
67 PSBS06M
BUTTON HD CAP SCR M5-.8 X 12
68 PH7949068 NOSE COVER
69 PH7949069 PALLET TIP
70 PH7949070 SIDING TIP
71 PH7949071 DECKING TIP
31 PSB02M
CAP SCREW M6-1 X 20
32 PH7949032 STEPPED PIN
33 PH7949033 RETAIN RUBBER
34 PH7949034 RETAIN RUBBER
35 PH7949035 CHECK PAWL
36 PH7949036 SPRING
72 PRP97M
ROLL PIN 3 X 30
73 PH7949073 TRIGGER VALVE CAP
74 PH7949074 O-RING
75 PH7949075 PLUNGER
76 PH7949076 SPRING
77 PH7949077 O-RING
37 PH7949037 STEPPED PIN
38 PH7949038 PROTECTOR
39 PH7949039 FEED PAWL
78 PH7949078 O-RING
-16-
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H7949 PARTS LIST
PAGE 2 OF 2
REF PART #
DESCRIPTION
REF PART #
DESCRIPTION
79
80
81
82
83
84
85
86
87
88
89
90
91
PH7949079 PILOT VALVE
92
93
94
95
96
97
98
PH7949092 CONTACT TRIP BLOCK
PH7949080 O-RING
PH7949093 ADJUSTING BOLT
PH7949094 COVER
PH7949081 BALL PIN
PH7949082 TRIGGER VALVE HOUSING
PH7949083 O-RING
PH7949095 O-RING
PH7949096 RUBBER GRIP
PH7949097 ADJUSTING NUT
PH7949098 NAILER CASE
PH7949084 O-RING
PH7949085 TRIGGER PLATE
PH7949086 TRIGGER
100 PH7949100 INCLUDED PNEUMATIC OIL
PRP98M
ROLL PIN 3 X 16
101 PAW04M
102 PAW05M
HEX WRENCH 4MM
HEX WRENCH 5MM
PH7949088 SLIDE SHAFT
PH7949089 SPRING
103 PH7949103 PISTON REPAIR KIT
104 PH7949104 MACHINE LABEL
PH7949090 TRIP GUIDE
PH7949091 SPRING
-17-
H7949/H7950/H7951 Nailer
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H7950 PARTS BREAKDOWN
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-18-
H7949/H7950/H7951 Nailer
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H7950 PARTS LIST
PAGE 1 OF 2
REF PART #
DESCRIPTION
FLAT HD CAP SCR M6-1 X 20
REF PART #
DESCRIPTION
1
PFH06M
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
PH7949040 STEPPED PIN
2
PH7949002 FRONT BRACKET
PH7950003 EXHAUST COVER
PH7949004 EXHAUST FILTER
PH7950005 EXHAUST FILTER PLATE
PH7949041 O-RING
3
PH7949042 FEED PISTON
PH7949043 O-RING
4
5
PH7949044 SPRING
6
PSB06M
CAP SCREW M6-1 X 25
PH7949045 SPRING
7
PH7950007 CAP
PH7949046 FEED PISTON STOP
PH7949047 SPRING COLLAR
PH7949048 O-RING
8
PH7949008 SPRING
PH7949009 WASHER
PH7949010 O-RING
PH7949011 PISTON HEAD VALVE
PH7949012 O-RING
PH7949013 SEAL
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
PH7950049 STEPPED PIN
PH7949050 RATCHET
PH7949051 SPRING
PH7950052 DOOR
PH7949014 PLAIN WASHER
PH7949015 PISTON STOPPER
PH7950016 O-RING
PH7950017 PISTON
PH7950018 DRIVER
PH7950019 CYLINDER
PH7950020 O-RING
PH7950021 CYLINDER RING
PH7950022 COLLAR
PH7950023 O-RING
PH7950024 GASKET
PH7950025 BODY
PH7949053 NAIL SUPPORT
PH7949054 SPRING
PH7949055 SET SHAFT
PH7949056 SLIDE ROD
PH7950057 MAGAZINE
PSBS09M
PSB15M
PLN02M
BUTTON HD CAP SCR M5-.8 X 12
CAP SCREW M5-.8 X 20
LOCK NUT M5-.8
PH7949061 MAGAZINE COVER
PRP42M ROLL PIN 3 X 20
PH7949063 RUBBER INSERT
PH7950064 SAFETY LEVER
PH7949065 DUST COVER
PH7949026 PAD
PH7949027 O-RING
PH7950028 BOTTOM BUMPER
PH7949029 O-RING
PH7950030 NOSE
PW03M
FLAT WASHER 6MM
PSBS06M
BUTTON HD CAP SCR M5-.8 X 12
PH7950068 NOSE COVER
PH7950069 PALLET TIP
PH7950070 SIDING TIP
PH7950071 DECKING TIP
PSB14M
CAP SCREW M8-1.25 X 20
PH7949032 STEPPED PIN
PH7949033 RETAIN RUBBER
PH7949034 RETAIN RUBBER
PH7949035 CHECK PAWL
PH7949036 SPRING
PRP97M
ROLL PIN 3 X 30
PH7949073 TRIGGER VALVE CAP
PH7949074 O-RING
PH7949075 PLUNGER
PH7949076 SPRING
PH7949037 STEPPED PIN
PH7950038 PROTECTOR
PH7949039 FEED PAWL
PH7949077 O-RING
PH7949078 O-RING
-19-
H7949/H7950/H7951 Nailer
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H7950 PARTS LIST
PAGE 2 OF 2
REF PART #
DESCRIPTION
REF PART #
DESCRIPTION
79
80
81
82
83
84
85
86
87
88
89
90
91
PH7949079 PILOT VALVE
92
93
94
95
96
97
98
PH7949092 CONTACT TRIP BLOCK
PH7949080 O-RING
PH7949093 ADJUSTING BOLT
PH7950094 COVER
PH7949081 BALL PIN
PH7949082 TRIGGER VALVE HOUSING
PH7949083 O-RING
PH7949095 O-RING
PH7949096 RUBBER GRIP
PH7949097 ADJUSTING NUT
PH7950098 NAILER CASE
PH7949084 O-RING
PH7949085 TRIGGER PLATE
PH7949086 TRIGGER
100 PH7949100 INCLUDED PNEUMATIC OIL
PRP98M
ROLL PIN 3 X 16
101 PAW04M
102 PAW05M
HEX WRENCH 4MM
HEX WRENCH 5MM
PH7949088 SLIDE SHAFT
PH7949089 SPRING
103 PH7950103 PISTON REPAIR KIT
104 PH7950104 MACHINE LABEL
105 PH7950105 SPRING
PH7949090 TRIP GUIDE
PH7949091 SPRING
-20-
H7949/H7950/H7951 Nailer
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H7951 PARTS BREAKDOWN
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-21-
H7949/H7950/H7951 Nailer
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H7951 PARTS LIST
PAGE 1 OF 2
REF PART #
DESCRIPTION
FLAT HD CAP SCR M6-1 X 20
REF PART #
DESCRIPTION
1
PFH55M
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
PH7951040 STEPPED PIN
2
PH7949002 FRONT BRACKET
PH7949003 EXHAUST COVER
PH7949004 EXHAUST FILTER
PH7949005 EXHAUST FILTER PLATE
PH7949041 O-RING
PH7951042 FEED PISTON
PH7949043 O-RING
PH7949044 SPRING
3
4
5
6
PSB38M
CAP SCREW M5-.8 X 25
PRP22M
ROLL PIN 4 X 32
7
PH7949007 CAP
PH7949046 FEED PISTON STOP
PH7949047 SPRING COLLAR
PH7949048 O-RING
8
PH7949008 SPRING
PH7949009 WASHER
PH7949010 O-RING
PH7949011 PISTON HEAD VALVE
PH7949012 O-RING
PH7949013 SEAL
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
PH7951049 STEPPED PIN
PH7951050 RATCHET
PH7949051 SPRING
PH7951052 DOOR
PH7949014 PLAIN WASHER
PH7949015 PISTON STOPPER
PH7949016 O-RING
PH7949017 PISTON
PH7951018 DRIVER
PH7951019 CYLINDER
PH7949020 O-RING
PH7949021 CYLINDER RING
PH7949022 COLLAR
PH7949023 O-RING
PH7949024 GASKET
PH7949025 BODY
PH7951053 NAIL SUPPORT
PH7949054 SPRING
PH7949055 SET SHAFT
PH7951056 SLIDE ROD
PH7951057 MAGAZINE
PSBS09M
PSB53M
PLN02M
BUTTON HD CAP SCR M5-.8 X 12
CAP SCREW M5-.8 X 18
LOCK NUT M5-.8
PH7951061 MAGAZINE COVER
PRP42M ROLL PIN 3 X 20
PH7951063 ADJUSTING BLOCK
PH7951064 SAFETY LEVER
PH7951065 ROLL PIN 3 X 8
PH7949026 PAD
PH7949027 O-RING
PH7949028 BOTTOM BUMPER
PH7949029 O-RING
PH7951030 NOSE
PW03M
FLAT WASHER 6MM
PSBS06M
BUTTON HD CAP SCR M5-.8 X 12
PH7951068 NOSE COVER
PH7951069 PALLET TIP
PH7951070 SIDING TIP
PH7951071 DECKING TIP
PSB02M
CAP SCREW M6-1 X 20
PH7951032 STEPPED PIN
PH7949033 RETAIN RUBBER
PH7949034 RETAIN RUBBER
PH7951035 STEPPED PIN
PH7951036 SPRING
PRP97M
ROLL PIN 3 X 30
PH7949073 TRIGGER VALVE CAP
PH7949074 O-RING
PH7949075 PLUNGER
PH7949076 SPRING
PH7951037 DOOR LOCK
PH7949038 PROTECTOR
PH7951039 FEED PAWL
PH7949077 O-RING
PH7949078 O-RING
-22-
H7949/H7950/H7951 Nailer
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H7951 PARTS LIST
PAGE 2 OF 2
REF PART #
DESCRIPTION
REF PART #
DESCRIPTION
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
PH7949079 PILOT VALVE
94
95
96
97
98
99
PH7949094 COVER
PH7949080 O-RING
PH7949095 O-RING
PH7949081 BALL PIN
PH7949096 RUBBER GRIP
PH7949097 ADJUSTING NUT
PH7951098 CARBIDE CHIP
PH7951099 NAILER CASE
PH7949082 TRIGGER VALVE HOUSING
PH7949083 O-RING
PH7949084 O-RING
PH7949085 TRIGGER PLATE
PH7949086 TRIGGER
101 PH7949100 INCLUDED PNEUMATIC OIL
102 PAW04M
103 PAW05M
HEX WRENCH 4MM
HEX WRENCH 5MM
PRP98M
ROLL PIN 3 X 16
PH7949088 SLIDE SHAFT
PH7949089 SPRING
104 PH7951104 PISTON REPAIR KIT
105 PH7951105 GRIZZLY LABEL
106 PH9751106 MAGNET
PH7949090 TRIP GUIDE
PH7949091 SPRING
107 PH9751107 SPRING
PH7949092 CONTACT TRIP BLOCK
PH7949093 ADJUSTING BOLT
108 PH9751108 PROTECT PLATE
-23-
H7949/H7950/H7951 Nailer
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TROUBLESHOOTING
Symptom
Air leaking at trig-
Possible Cause
1. O-rings in trigger valve hous-
Solution
1. O-rings must be replaced.
ger valve area.
ing are damaged.
Air leaking between 1. Loose screws in housing.
1. Tighten screws.
2. Replace O-ring.
3. Tighten air fitting & use
Teflon tape.
housing and hose.
2. Damaged O-ring.
3. Loose air fitting.
Air leaking between 1. Damaged cap gasket.
1. Replace gasket.
housing and cap
assembly.
Tool skips nails
while discharging.
1. Air leaks.
2. Dirt in nose.
1. Tighten screws and fittings.
2. Clean nose.
3. Dirt or damage prevents nails
from moving freely in maga-
zine.
3. Clean magazine, inspect/
repair damage; insert a
clean strip of nails.
4. Inadequate air flow to tool.
4. Check fitting, hose, com-
pressor & air pressure.
5. Replace piston O-ring.
Lubricate.
5. Worn O-ring on piston or lack
of lubrication.
6. Damaged O-rings on trigger
valve.
6. Replace trigger valve O-
rings.
7. Worn bumper.
7. Replace bumper.
Tool runs slowly
or has a loss of
power.
1. Nailer is not sufficiently lubri-
cated.
2. Compressor is not supplying
at least 70 PSI of air pressure
to the tool.
1. Lubricate nailer.
2. Repair or replace your
compressor.
3. Exhaust port in cap is blocked. 3. Clean or replace damaged
internal parts.
Nails frequently jam 1. Nails are the wrong size.
1. Use correct nails.
2. Use undamaged, clean
nails.
in the nailer nose.
2. Nails are bent or dirty.
3. Magazine or nose screws are
loose.
3. Tighten magazine.
4. Driver or driver guide are worn 4. Replace worn or damaged
or damaged.
parts.
5. Nails are wrong angle.
5. Use correct angle nails.
Nailer does not fire. 1. Nail is jammed in magazine or 1. Clear nailer magazine or
discharge area.
2. Piston shaft is damaged.
3. Air pressure too low.
discharge area.
2. Replace piston shaft.
3. Check/increase air pres-
sure.
-24-
H7949/H7950/H7951 Nailer
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WARRANTY AND RETURNS
Grizzly Industrial, Inc. warrants every product it sells for a period of 1 year to the original
purchaser from the date of purchase. This warranty does not apply to defects due directly
or indirectly to misuse, abuse, negligence, accidents, repairs or alterations or lack of
maintenance. This is Grizzly’s sole written warranty and any and all warranties that may
be implied by law, including any merchantability or fitness, for any particular purpose, are
hereby limited to the duration of this written warranty. We do not warrant or represent that
the merchandise complies with the provisions of any law or acts unless the manufacturer so
warrants. In no event shall Grizzly’s liability under this warranty exceed the purchase price
paid for the product and any legal actions brought against Grizzly shall be tried in the State
of Washington, County of Whatcom.
We shall in no event be liable for death, injuries to persons or property or for incidental,
contingent, special, or consequential damages arising from the use of our products.
To take advantage of this warranty, contact us by mail or phone and give us all the details.
We will then issue you a “Return Authorization Number,” which must be clearly posted on
the outside as well as the inside of the carton. We will not accept any item back without this
number. Proof of purchase must accompany the merchandise.
The manufacturers reserve the right to change specifications at any time because they
constantly strive to achieve better quality equipment. We make every effort to ensure that
our products meet high quality and durability standards and we hope you never need to
use this warranty.
Please feel free to write or call us if you have any questions about the machine or the
manual.
Grizzly Industrial, Inc.
1203 Lycoming Mall Circle
Muncy, PA 17756
Phone: (570) 546-9663
Fax: (800) 438-5901
E-Mail:
Thank you again for your business and continued support. We hope to serve you again
soon!
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WARRANTY CARD
Name_________________________________________________________________
Street_________________________________________________________________
City _______________________ State_________________________ Zip _________
Phone #____________________ Email ________________________ Invoice #_____
Model # ____________________ Order #_______________________ Serial #______
The following information is given on a voluntary basis. It will be used for marketing purposes to
help us develop better products and services. All information is strictly confidential.
1. How did you learn about us?
____Advertisement
____Friend
____Catalog
____Card Deck
____Website
Other:________________________
2. Which of the following magazines do you subscribe to?
____ Cabinet Maker
____ Family Handyman
____ Hand Loader
____ Handy
____ Home Shop Machinist ____ Precision Shooter
____ Journal of Light Cont. ____ Projects in Metal
____ Popular Mechanics
____ Popular Science
____ Popular Woodworking ____ Wooden Boat
____ Practical Homeowner ____ Woodshop News
____ Today’s Homeowner
____ Wood
____ Woodsmith
____ Woodwork
____ Live Steam
____ Model Airplane News ____ Rifle
____ Modeltec
____ Old House Journal
____ RC Modeler
____ Woodworker West
____ Woodworker’s Journal
____ Other:
____ Shop Notes
____ Shotgun News
3. What is your annual household income?
____$20,000-$29,000
____$30,000-$39,000
____$40,000-$49,000
____$70,000+
____$50,000-$59,000
____$60,000-$69,000
4. What is your age group?
____20-29
____30-39
____60-69
____40-49
____70+
____50-59
5. How long have you been a woodworker/metalworker?
____0-2 Years ____2-8 Years ____8-20 Years
____20+ Years
6. How many of your machines or tools are Grizzly?
____0-2 ____3-5 ____6-9
____10+
____No
____No
7. Do you think your machine represents a good value? ____Yes
8. Would you recommend Grizzly Industrial to a friend? ____Yes
9. Would you allow us to use your name as a reference for our customers in your area?
Note: We never use names more than 3 times. ____Yes ____No
10. Comments:_________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
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Send a Grizzly Catalog to a friend:
Name________________________________
Street________________________________
City______________State______Zip_______
FOLD ALONG DOTTED LINE
Place
Stamp
Here
GRIZZLY INDUSTRIAL, INC.
P.O. BOX 2069
BELLINGHAM, WA 98227-2069
TAPE ALONG EDGES--PLEASE DO NOT STAPLE
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