Shock
Reeppaaiirr
Guide
Series
310-401XX
and
310-402XX
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Tools You Will Need
You will need to have the following additional tools/equipment to re-valve
our dampers:
1. Nitrogen tank. The tank can be purchased at a local gas supply
store. A small 40 lb. tank will likely last you for a full season.
2. 350 PSI pressure regulator. Be sure that the regulator is compatible
with the nitrogen gas.
3. High pressure hose to interface with pressure regulator and the
charging valve assembly
4. 0-6" calipers with English (imperial) units of measurements
5. Torque wrench with a minimum of 216 in-lb. capacity
6. 1/2" socket for above torque wrench
7. 11/16" open-end wrench
8. 1/2" boxed end wrench
9. Charging valve assembly
10. Assorted drill bits - .025” dia., .031” dia., .040” dia., .055” dia.,
.062” dia., .076” dia., and .094” dia.
11. Paint strainers
A
12. Tire valve core removal tool
13. Bicycle style tire pump
14. Graduated Cylinder
A1
Discharge
nitrogen
gas prior to
disassembly
A
Disassembly
• Clean the exterior of the shock prior to disassembly.
• Discharge nitrogen gas prior to disassembly (A1).
• Clamp the body of the shock (rod end up) (A2) using the Integra Shock
Vise (part # 310-30204). Alternately, you can use a standard vise, using
body clamps (part # 310-30311, purchased separately). Do not over-
tighten clamps. Permanent deformation of the tube will occur if the
clamps are over-tightened.
A2
Clamp
the body
of the shock
• Be sure the rod is completely extended.
• Using the rod guide wrench provided, loosen the rod guide and slowly
remove the head assembly (A3).
• Place the head assembly you have just removed on a clean, low lint
paper towel (A4).
• Pour the oil into a measuring cup, or similar graduated cylinder. Use a
paint strainer to ensure that any large, foreign particles are removed
from the oil (A5).
A3
A4
A5
Loosen the
rod guide and
slowly remove
the head
Place head
assembly on
low lint paper
towel
Place oil into
a measuring
cup
assembly
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B
Valving The Head Assembly
1. Clamp the head assembly in the vice (B1).
B
2. Set up a clean, low lint paper towel on the bench next to the vice.
B1
Clamp
the head
assembly
into the vice
3. Using a marker, label the upper right hand corner of the paper towel
with an “R” (rebound) and the lower right hand corner of the paper
towel with a “C” (compression).
4. Using a 1/2“ boxed end wrench, remove the piston nut and washer
from the head assembly (B2). Place the nut and washer between the
“R” and “C” on the paper towel.
B2
Remove
piston nut
and washer
from the head
assembly
5. Remove the rebound disc travel limiter along with the rebound disc
stack.
6. Remove all of the discs from the travel limiter &set the rebound disc
travel limiter directly across from the “R” on the paper towel (B3).
7. Remove the piston and place on the paper towel across from the piston nut and washer (B4).
8. Remove the compression travel limiter along with the disc stack from the rod.
9. Remove all of the discs from the travel limiter & set the compression disc travel limiter directly across from
the “C” on the paper towel (B5).
10. Using dial calipers, carefully measure each shim’s diameter and thickness. For rebuilds, replace each shim
with same size new shim. For revalving, refer to Valve Code Sheet. *Note: .594 OD x .020 shim is constant,
and remains on travel limiter at all times.
11. Remove shims from paper towel (B6).
12. Place the new rebound valve discs on the paper towel directly across from the “R”, and the new
compression discs directly across from the “C”. Put the discs in order from top to bottom starting with the
disc that will be placed closest to the face of the disc travel limiter (B5).
B3
B4
B5
B6
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13. Stack the compression discs onto the disc travel limiter. Place the disc stack/travel limiter on the
piston rod. (B7).
14. Place the piston on top of the compression stack. Be sure to orient the piston properly. Face the piston side
marked with a “C” towards the compression valve stack. (B8)
15. Stack the rebound discs onto the rebound disc travel limiter. Place the disc stack/travel limiter on top of the
piston. (B9)
16. Place the piston washer and nut on the piston rod, (B10) and torque to 216 in-lbs. (18 Ft-lbs.).
17. Remove the head assembly from the vice.
B7
B8
Piston
Marked
“R”
Piston
Marked
“C”
Stack compression discs onto disc travel limeter
Place piston onto the compression stack
B9
B10
Stack rebound discs onto rebound disc travel limiter
& place on piston
Place piston washer & nut on piston rod
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C
Assembly
• Be sure all seals are lubricated with O-ring lube prior to assembling the
unit.
C
C1
• Once the head assembly has been completely built, the damper can be
assembled as follows:
1. Clamp the body of the shock in the vice.
NOTE:
When setting the floating piston to the proper height,
be sure not to use a high volume pressure source
such as an air compressor or compressed air bottle.
!
!
SERIOUS INJURY COULD OCCUR !!!!!!!!
2. Using the floating piston height tool, set the floating piston to the
proper setting. Remove valve core from tank valve. Use a bicycle
style tire pump to “bump” the floating piston approximately half way up
into the tube. Set the floating piston height tool for the proper damper
length. See chart for proper setting.
NOTE:
Be sure not to use a hard device to measure or adjust
the floating piston height, as this may cause scratches in the I.D.
of the shock body that could alter the proper performance of the shock.
C2
3. Seat the tool fully into the floating piston from the top of the
disassembled shock body. (C1)
C4
Body
Length
Distance from
top of tube to Center
of floating piston
9”
8”
7”
6”
5”
10 5/8”
9 13/16”
8 15/16”
8”
7 1/8”
4. Press the tool into the shock body
until the floating piston reaches the
proper height. Reinstall the valve
core into the tank valve. (C1)
5. Pull the rod guide approximately
half way down the piston rod (C2).
6. Fill shock body with oil to the
bottom of the internal threads
(C3).
C3
7. Slowly install the head assembly
into the shock body. Allow time for
the air below the piston assembly
to “bleed” past.
8. Stroke the head assembly until
the air below the piston has
completely vented to the top of the
shock body. Be sure the floating
piston does not move. (C4)
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C5
C
Assembly
(Continued)
9.Slide the rod guide down the shaft into the shock body. Be sure to
keep the piston submerged in oil the entire time.
10. Tighten the rod guide into the shock body with the rod in the fully
extended position. Do this slowly so that the air below the rod guide
has an opportunity to escape past the threads (C5).
11. Compress the rod to verify full travel, and to be certain the floating
piston has not moved during assembly. (If floating piston has
moved, piston rod will not fully compress into shock body.)
D
Damper Recharging
D1
D
Once the damper has been completely reassembled and the rod guide
properly tightened, the damper must be charged with nitrogen gas:
1. Be sure the valve on top of the nitrogen tank is closed. Secure the
charging valve assembly to the nitrogen tank/regulator.
Part #
310-30310
2. Back the pressure regulator on the nitrogen tank completely off.
3. Compress the rod into the damper completely.
4. Open the valve on the top of the nitrogen tank to approximately
200 PSI.
5. Back the wing nut all the way off (counter clockwise) on the inflation
D2
unit (part # 310-30310).
6. Screw the inflation unit onto the damper fill valve. Do not over tighten.
Tighten the valve assembly only enough to eliminate any air leakage
(D1).
7. Turn the wing nut clockwise until it stops. This will push in the valve
core of the Schrader valve and allow gas to enter the shock.
8. Pressurize the shock to the desired pressure through the valve stem
on the inflation unit. ***use nitrogen gas only*** (D2)
9. Back the wing nut all the way off (counter clockwise) on the inflation
unit.
10. Remove inflation unit from the shock. *** You may hear a small
amount of gas escape when the unit is removed from the shock. If the
wing nut was completely backed off, this is gas that was stored in the
unit and will not affect the setting. ***
11. Compress the rod to verify full travel in the damper without
interference. The pressure inside the damper should extend the rod
without any assistance.
IF YOU HAVE ACCESS TO A DAMPER DYNAMOMETER,
BE SURE TO TEST THE DAMPER FOR PROPER OPERATION.
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1
2
3
4
27
26
Shock
Parttss
25
24
23
22
21
20
19
5
6
7
To order parts, call
Integra / Port City Racing
(800) 472-2464
18
17
8
Item No. Description
Part No.
1
Retaining Ring - Spherical Bearing . . . . . . . . 310-30328
Spherical Bearing - .500" I.D.. . . . . . . . . . . . . 310-30327
Fill Valve - N2 . . . . . . . . . . . . . . . . . . . . . . . . . 310-30337
End Cap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310-30301
O-Ring - End Cap. . . . . . . . . . . . . . . . . . . . . . 310-30212
O-Ring - Floating Piston. . . . . . . . . . . . . . . . . 310-30213
Floating Piston . . . . . . . . . . . . . . . . . . . . . . . . 310-30334
Adjusting Nut . . . . . . . . . . . . . . . . . . . . . . . . . 310-30298
Pressure Tube-(5",6",7",8" & 9"). . . . . . . . . . . . . . Specify
Piston Nut. . . . . . . . . . . . . . . . . . . . . . . . . . . . 310-30216
Piston Washer . . . . . . . . . . . . . . . . . . . . . . . . 310-30217
Travel Limiter - Disk . . . . . . . . . . . . . . . . . . . . 310-30335
Piston,Digressive,Linear,High Flow Linear. . . . . . Specify
O-Ring - Piston Band Energizing . . . . . . . . . . 310-30215
Piston Band . . . . . . . . . . . . . . . . . . . . . . . . . . 310-30214
Piston Rod(5",6",7",8" & 9") . . . . . . . . . . . . . . . . . Specify
O-Ring - Rod Guide Primary . . . . . . . . . . . . . 310-30211
Bearing - DU. . . . . . . . . . . . . . . . . . . . . . . . 310-30300-1
Rod Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . 310-30300
O-Ring - Rod Guide Secondary . . . . . . . . . . . 310-30210
Rod Seal - Quad Ring . . . . . . . . . . . . . . . . . . 310-30209
Rod Wiper . . . . . . . . . . . . . . . . . . . . . . . . . . . 310-30208
Pin - Spring Seat Retainer . . . . . . . . . . . . . 310-30200-4
Spring Seat. . . . . . . . . . . . . . . . . . . . . . . . . . . 310-30299
Travel Indicator - Compression . . . . . . . . . . . 310-30218
Piston Rod Jam Nut . . . . . . . . . . . . . . . . . . . . 310-30338
Rod End Housing . . . . . . . . . . . . . . . . . . . . . . 310-30402
Backup Disk . . . . . . . . . . . . . . . . . . . . . 310-MVD594020
Valve Disk - .70" O.D.. . . . . . . . . . . . . . . . 310-MVD7010
Valve Disk - .85" O.D.. . . . . . . . . . . . . . . 310-MVD85010
Valve Disk - 1.00" O.D.. . . . . . . . . . . . . . . 310-MVD1010
Valve Disk - 1.16" O.D.. . . . . . . . . . . . . 310-MVD116010
Valve Disk - 1.28" O.D.. . . . . . . . . . . . . 310-MVD128010
Preload Pilot Disk. . . . . . . . . . . . . . . . . 310-MVD116010
Preload Ring Disk. . . . . . . . . . . . . . . . . . 310-PR128010
Bleed Disk . . . . . . . . . . . . . . . . . . . . . . . . . 310-BD4-004
2
3
4
5
6
16
7
8
9
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
15
14
11
13
10
12
12
COMPRESSION VALVE STACK
34
REBOUND VALVE STACK
30
32
36
28
PRELOAD VALVE
STACK
35
29
31
33
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Shock RRebbuuiilldd
Order TOLL FREE 1-800-472-2464
Parttss
Integra’s complete line of parts makes it easy for you to rebuild and repair your shocks.
All Integra shocks are ●Owner Serviceable ●Repairable ●Revalvable
DESCRIPTION
Shock Vise
Shock Vise Bench Mount
PART #
310-30204
310-30205
PRICE
$169.95
$39.95
SHOCK VISE
new
DESCRIPTION
Shock Valving Kit
PART #
310-30202
PRICE
$315.00
INTEGRA SHOCK
VALVING KIT
DESCRIPTION
Shock Oil
PART #
310-30900-1
PRICE
$9.95
INTEGRA
SHOCK OIL
DESCRIPTION
Inflation Unit
PART #
310-30310
PRICE
$82.50
INFLATION UNIT
BODY CLAMP
WRENCH
DESCRIPTION
Shock Body Clamp
PART #
310-30311
PRICE
$49.99
DESCRIPTION
Rod Guide Wrench
PART #
310-30312
PRICE
$27.99
DESCRIPTION
Over Flow Ring
PART #
310-30313
PRICE
$38.50
OVER FLOW RING
SPANNER WRENCH
DESCRIPTION
C/O Nut Spanner Wrench
PART #
310-30314
PRICE
$15.95
DESCRIPTION
Piston Vise
PART #
310-30329
PRICE
$39.95
PISTON VISE
DESCRIPTION
Base Valve Tool
PART #
310-30901
PRICE
$49.95
BASE VALVE TOOL
• Allows valve changing of base valve without removal
from pressure tube
DESCRIPTION
Snap Ring sleeve
PART #
310-30331
PRICE
$29.95
BASE VALVE SNAP RING SLEEVE
• For installation of snap ring without damaging pressure tube
DESCRIPTION
Floating Piston Locator
PART #
310-30207
PRICE
$43.99
FLOATING PISTON LOCATOR
DESCRIPTION
Floating Piston Tool
PART #
310-30330
PRICE
$39.99
FLOATING PISTON TOOL
• Used for air bleeding double adjustable shocks
DESCRIPTION
Piston Rod Clamp
PART #
310-30206
PRICE
$39.99
PISTON ROD CLAMP
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