Harbor Freight Tools Heat Pump 91793 User Manual

Bucket Grease Pump  
91793  
ASSEMBLY AND OPERATING INSTRUCTIONS  
3491 Mission Oaks Blvd., Camarillo, CA 93011  
Copyright © 2004 by Harbor Freight Tools®. All rights reserved. No portion of this  
manual or any artwork contained herein may be reproduced in any shape or form  
without the express written consent of Harbor FreightTools.  
For technical questions and replacement parts, please call 1-800-444-3353  
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7. Use eye and ear protection. Always wear ANSI approved impact safety  
goggles.Wear an ANSI approved dust mask or respirator when working  
around metal, wood, and chemical dusts and mists.  
8. Do not overreach. Keep proper footing and balance at all times. Do not reach  
over or across running machines.  
9. Maintain tools with care. Keep tools sharp and clean for better and safer  
performance. Follow instructions for lubricating and changing accessories.  
Inspect tool cords periodically and, if damaged, have them repaired by an  
authorized technician.The handles must be kept clean, dry, and free from oil  
and grease at all times.  
10. Remove adjusting keys and wrenches. Check that keys and adjusting  
wrenches are removed from the tool or machine work surface before plugging  
it in.  
11. Stay alert. Watch what you are doing, use common sense. Do not operate  
any tool when you are tired.  
12. Check for damaged parts. Before using any tool, any part that appears  
damaged should be carefully checked to determine that it will operate properly  
and perform its intended function. Check for alignment and binding of moving  
parts; any broken parts or mounting fixtures; and any other condition that may  
affect proper operation.Any part that is damaged should be properly repaired  
or replaced by a qualified technician.  
13. Replacement parts and accessories. When servicing, use only identical  
replacement parts. Use of any other parts will void the warranty. Only use  
accessories intended for use with this tool. Approved accessories are  
available from Harbor FreightTools.  
14. Do not operate tool if under the influence of alcohol or drugs. Read  
warning labels on prescriptions to determine if your judgment or reflexes are  
impaired while taking drugs. If there is any doubt, do not operate the tool.  
15. Maintenance. For your safety, service and maintenance should be performed  
regularly by a qualified technician.  
16. The grease gun and bulk grease must bestoredoutofreachofchildren.  
17. The brass components of this product contain lead, a chemical known to  
the State of California to cause birth defects (or other reproductive  
harm). (California Health & Safety code 25249.5, et seq.)  
Warning:The warnings, cautions, and instructions discussed in this instruction  
manual cannot cover all possible conditions and situations that may occur. It  
must be understood by the operator that common sense and caution are fac-  
tors which cannot be built into this product, but must be supplied by the opera-  
tor.  
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Unpacking  
When unpacking, check to make sure the following parts are included.  
High Pressure Cast Iron Grease Pump  
22 lb. Capacity Steel Bucket  
Spring Loaded Steel Follower Plate  
2 Meter High Pressure Rubber hose  
Fitted Steel Extension and Zerk Coupler  
If any parts are missing or broken, please call Harbor Freight Tools at the number  
on the cover of this manual.  
Assembly  
1. Remove all packaging material from the pump and its parts.  
2. Thread the Lever Handle (1) into the Handle Bracket (2), and turn it clockwise  
until it is tight.  
3. Open all 4 Cover Clamps (17), by lifting their handles up from the bottom, and  
letting their clamps fall away from the Drum Cover (5). Remove the complete  
Drum Cover (5) and Pump (10) assembly, set these aside.  
4. Wipe out the Grease Drum (9) with a clean, dry rag to remove any  
contaminants that may be present.  
5. Fill the Grease Drum (9) with up to 22 lbs. of bulk grease. Be sure to leave at  
least 1” from the top of the Grease Drum (9) unfilled, to make room for the  
pump and its components.  
NOTE: Never put contaminated grease into the Grease Drum (9) as contaminants  
may damage the pump or the mechanism the grease is eventually pumped into. If  
grease is spilled onto the floor while filling, that grease should be discarded.  
6. Place the Drum Cover (5) and Pump (10) assembly back onto the Grease  
Drum (9), with the Follower Plate (8) resting on the grease.  
7. Push the Drum Cover (5) down onto the top of the Grease Drum (9).This will  
compress the Compression Spring (7), and will expel any air that might be  
trapped in the grease.  
8. Reattach all four Cover Clamps (17), by positioning the clamp over the edge  
of the Drum Cover (5), and pressing the lever of the Cover Clamps (17) down  
to lock them closed.Your Grease Pump is now ready for operation.  
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Steel Extension (14)  
Operation  
NOTE: This pump is designed for use with  
petroleum based grease only. Do not use  
this pump for oil or other low-viscosity  
fluids, water-based materials, gasoline or  
other flammable liquids, or corrosive  
compounds. Do not use any materials  
which may damage the steel, iron, brass or  
nitrile rubber which make up the mecha-  
nism of this pump.  
NOTE: On first use, you will have to pump  
several times until grease has filled the pump mechanism and the rubber hose.  
Point the Steel Extension (14) and Coupler (12) into an appropriate waste recep-  
tacle while pumping until grease is expelled from the Coupler (12).  
WARNING: Never point the Steel Extension and Coupler toward any person or  
animal while pumping. Expelled grease under high pressure may cause severe  
injury.  
NOTE: In the unlikely event that you are unable to get the grease to flow, it is likely  
that there is air trapped in the grease which is interfering with the action of the  
pump.To remedy this, open the Air Bleeder (16) by turning it counter clockwise a  
few turns by hand. Do not remove the Air Bleeder (16) from the pump.With the Air  
Bleeder (16) open, pump the handle until grease is expelled from the Air Bleeder  
(16). Close the Air Bleeder (16) by turning it by hand clockwise, until hand tight. Do  
not overtighten.  
1. To operate the pump, attach the Coupler (12) to the grease fitting of the  
equipment being serviced. Hold the Coupler (12) in a straight line with the  
grease fitting on the machine, and ensure that the Coupler (12) is securely  
fastened.  
2. Place one foot onto the Foot Rest (11), and pump the Lever Handle (1).  
Grease will flow from the pump into the machine being serviced.When the  
machine is full, grease will begin to escape from the overflow port on the  
machine.When you observe this, stop pumping.  
3. To disconnect the Coupler (12), slightly tilt, twist and pull it off the grease  
fitting.  
Grease Pump with  
Drum Cover removed  
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Maintenance  
1. When not in use, store the Steel Extension (14) in the vertical steel tube  
attached to the side of the Grease Drum (9).  
2. Protect the Coupler (12) from damage.Wipe it with a clean rag before each  
use to prevent contamination of the grease being injected.  
3. Store your Grease Pump in a clean dry place. Protect it from temperature  
extremes. Do not expose this tool to corrosive environments.  
4. If you observe any grease leaking from the Air Bleeder (16), Discharge Outlet  
(15), or Coupler (12), check to be sure these parts are tightly installed.  
5. Occasionally lubricate the pivot points of the Handle Bracket (2) and  
Connecting Link (4) with a medium weight oil.  
Parts List  
Part #  
Description  
Lever Handle  
Qty.  
1
Part #  
10  
Description  
Qty.  
1
1
2
3
4
5
6
7
8
9
Pump  
Handle Bracket  
Pump Head  
1
11  
Foot Rest  
1
1
12  
Coupler  
1
Connecting Link  
Drum Cover  
1
13  
Rubber Hose  
Steel Extension  
Discharge Outlet  
Air Bleeder  
Cover Clamp  
1
1
14  
1
Lift Handle  
1
15  
1
Compression Spring  
Follower Plate  
Grease Drum  
1
16  
1
1
17  
4
1
NOTE: Some parts are listed and shown for illustration purposes only and are not  
available individually as replacement parts.  
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Assembly Drawing  
PLEASE READ THE FOLLOWING CAREFULLY  
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS DIA-  
GRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFAC-  
TURER NOR DISTRIBUTOR MAKES ANY REPRESENTATION OR WARRANTY OF  
ANY KIND TO THE BUYER THAT HE OR SHE IS QUALIFIED TO MAKE ANY REPAIRS  
TO THE PRODUCT OR THAT HE OR SHE IS QUALIFIED TO REPLACE ANY PARTS  
OF THE PRODUCT. IN FACT, THE MANUFACTURER AND/OR DISTRIBUTOR  
EXPRESSLY STATES THAT ALL REPAIRS AND PARTS REPLACEMENTS SHOULD BE  
UNDERTAKEN BY CERTIFIED AND LICENSED TECHNICIANS AND NOT BY THE  
BUYER. THE BUYER ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR  
HER REPAIRS TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTS THERETO,  
OR ARISING OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS  
THERETO.  
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