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Repair Instructions
LD Grease Pump
Repair Kits
Instructions for repairing the LD Grease Pump.
Maximum Fluid Pressure - 7500 psi (51.7 MPa, 517 bar)
Maximum Air Pressure - 150 psi (1.03 MPa, 10.3 bar)
Important Safety Instructions
Read all warnings and instructions in this manual and
in your LD Series Oil or Grease Pump manual. Save
all instructions.
Repair Kits:
24H854: Throat and Piston Seal Replacement Kit
24H856: O-Ring and Seal Replacement Kit
24U984: Air Piston Replacement Kit
3A1495C
EN
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Summary of Contents for Graco LD 24U984
- Page 1 Repair Instructions LD Grease Pump Repair Kits 3A1495C Instructions for repairing the LD Grease Pump. Maximum Fluid Pressure - 7500 psi (51.7 MPa, 517 bar) Maximum Air Pressure - 150 psi (1.03 MPa, 10.3 bar) Important Safety Instructions Read all warnings and instructions in this manual and in your LD Series Oil or Grease Pump manual.
- Page 2 Warnings Warnings The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclama- tion point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks. When these symbols appear in the body of this manual, refer back to these Warnings. Product-specific hazard symbols and warnings not covered in this section may appear throughout the body of this manual where applicable.
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Page 3: Pressure Relief Procedure
Instructions Instructions Disassembly Always use all new parts included in your kit and dis- pose of replaced parts according to all state and local regulations for disposal of discarded components. The following disassembly instructions describe the pro- cedure for completely disassembling the LD grease Inspect all parts when disassembling the pump. - Page 4 Instructions 4. Secure a strap wrench around the shovel cylinder 6. Use a wrench to loosen and remove the seal (27). Use the strap wrench to turn the shovel cylin- retainer (29) (Fig. 4). der counter-clockwise to loosen and remove it from the pump assembly (Fig.
- Page 5 Instructions 8. If the gasket (30) is still inside the spacer cylinder 13. Use a rubber hammer and small punch to drive out (36) use a pick to remove. pin (8), holding together the priming rod (34) and piston rod (23). Turn the priming rod (34) counter 9.
- Page 6 Instructions force to hold the pump in position. The pump cylin- NOTE: Sliding the flat blade of a screw driver between der is aluminum and could be damaged by using the flange (22) and air cylinder (21) will help separate excessive clamping force.
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Page 7: Pump Reassembly
Instructions Pump Reassembly 3. Install 3 screws (3) (Fig. 13). Tighten with a 5 mm socket wrench and torque to 60-70 in lbs (6.8 – 7.9 N.m). NOTE: The following instructions describe the proce- dure to follow to reassemble a completely disassembled LD grease pump. - Page 8 Instructions 6. Install the 5 screws (4) wrench tight only. 11. Install screws (43). Torque to 60-70 in. lbs (6.8 - 7.9 N.m). NOTE: If installing a new air cylinder (27), the mat- 12. Torque screws (4) installed in Step 6 to 60-70 in. lbs ing holes are not threaded by design.
- Page 9 Instructions 17. Screw the piston rod (23) and the connecting rod NOTE: When there is end play at the pinned connec- (32) together aligning the pin hole in both pieces to tion, you should be able to slightly move from allow the pin to be pushed through (Fig.
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Page 10: Repair Kits
Instructions intake seal on the priming rod as shown in Fig. 20. der securely then torque to 45 - 55 ft. lbs (61 - 75 N.m). 26. Install seal retainer (29) over priming rod (34) (Fig. 22). 27. Use an adjustable wrench to tighten seal retainer securely, then torque to 45 - 55 ft lbs (61 - 75 N.m). - Page 11 Instructions Throat and Piston Seal Replacement Kit - 2. Use a pick to remove the o-ring (5) installed around the circumference of the air piston (15) (Fig. 26). 24H854 ( Fig. 25 Grease the new o-ring included in the kit and install Replacement parts for o-ring (5) installed on air piston it around the air piston.
- Page 12 Instructions 4. Remove nut retainer (37) from flange (22) (Fig. 28). the new o-rings (12) and o-ring (6) included in the kit and install them in the bottom cover housing. Fig. 28 Fig. 30 8. Reassemble the pump as described in the Reas- 5.
- Page 13 Instructions Air Piston Replacement Kit - 24U984 1. Disassemble the pump following Disassembly (Fig. 35) Steps 1-14 (pages 3-5) only. Ref. Description 2. Use a pick to remove the gasket (30) installed O-RING between the flange (22) and tube (36) (Fig. 32). PIN, straight, slotted, 2.5 x 16 Grease the new gasket included in the kit and install GASKET, 32 OD...
- Page 14 Instructions 3. Pull spacer cylinder (36) away from pump to access Pump Reassembly pin (8) (Fig. 36). Always use all new parts included in the kit for reas- sembly. 1. Apply a thin coat of grease around the threaded end of the new displacement rod (25).
- Page 15 Instructions Fig. 38. the bottom cover firmly into the air cylinder (Fig. 40). Fig. 40 7. Install the 5 screws (4) wrench tight only. Fig. 38 NOTE: If installing a new air cylinder (27) the mating holes are not threaded by design. Use thread form- 4.
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Page 16: Graco Information
Graco Information For the latest information about Graco products, visit www.graco.com. TO PLACE AN ORDER, contact your Graco distributor or call to identify the nearest distributor. Phone: 612-623-6928 or Toll Free: 1-800-533-9655, Fax: 612-378-3590 All written and visual data contained in this document reflects the latest product information available at the time of publication.
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