Graco LD 24H854 Repair Instructions Download

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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)

Repair Kits:

24H854: Throat and Piston Seal Replacement Kit
24H856: O-Ring and Seal Replacement Kit
24U984: Air Piston Replacement Kit

Important Safety Instructions

Read all warnings and instructions in this manual and
in your LD Series Oil or Grease Pump manual. Save
all instructions.

Summary of Contents for LD 24H854

Page 1: ...a 517 bar Maximum Air Pressure 150 psi 1 03 MPa 10 3 bar Repair Kits 24H854 Throat and Piston Seal Replacement Kit 24H856 O Ring and Seal Replacement Kit 24U984 Air Piston Replacement Kit Important Sa...

Page 2: ...u stop spraying and before cleaning checking or servicing equipment Tighten all fluid connections before operating the equipment Check hoses and couplings daily Replace worn or damaged parts immediate...

Page 3: ...ump Depending on the repair maintenance procedure you are performing on the pump it may not be neces sary to entirely disassemble the pump or perform all steps in this procedure The reference numbers...

Page 4: ...adjustable wrench to hold the priming rod 34 securely Use a second adjustable wrench to loosen and remove the nut 19 and priming piston 35 Fig 3 Fig 4 6 Use a wrench to loosen and remove the seal ret...

Page 5: ...on a clean hard work surface NOTE When removing the pin 8 in Steps 12 14 it is helpful to place a support such as a piece of wood below the rods 13 Use a rubber hammer and small punch to drive out pi...

Page 6: ...p the flange 22 and remove the entire assembly from inside the air cylin der 21 NOTE Sliding the flat blade of a screw driver between the flange 22 and air cylinder 21 will help separate the two parts...

Page 7: ...bottom cover 14 and flange 22 as described in the Throat and Pis ton Seal Replacement Kit 24H854 page 11 Be sure to apply a thin coat of water resistant grease to all o rings and seals 2 Align pilot...

Page 8: ...60 70 in lbs 6 8 7 9 N m 12 Torque screws 4 installed in Step 6 to 60 70 in lbs 6 8 7 9 N m Muffler 17 Installation Fig 17 13 Depending on your installation the air valve 40 can be mounted with the m...

Page 9: ...ightly move from side to side the displacement rod 25 pinned to the connecting rod 32 and the connecting rod 32 pinned to the piston rod 23 and piston rod 23 pinned to the priming rod 34 22 If these c...

Page 10: ...l cylinder 27 over priming rod 34 Fig 24 Use a strap wrench to tighten shovel cylin der securely then torque to 45 55 ft lbs 61 75 N m Repair Kits All Repairs Unless otherwise stated entirely disassem...

Page 11: ...pump following Disassembly Steps 1 3 page 3 Steps 9 12 page 5 and 15 21 pages 5 6 2 Use a pick to remove the o ring 5 installed around the circumference of the air piston 15 Fig 26 Grease the new o ri...

Page 12: ...through flange assem bly 22 Fig 30 7 Remove and discard the 3 small o rings 12 and o ring 6 in the bottom cover 14 Fig 30 Grease the new o rings 12 and o ring 6 included in the kit and install them i...

Page 13: ...s described in the Reas sembly instructions page 7 Air Piston Replacement Kit 24U984 Fig 35 Pump Disassembly 1 Follow Pump Disassembly instructions Steps 1 3 beginning on page 3 2 Secure a strap wrenc...

Page 14: ...se parts Pump Reassembly 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 2 Assemble washer 38 air pist...

Page 15: ...40 7 Install the 5 screws 4 wrench tight only NOTE If installing a new air cylinder 27 the mating holes are not threaded by design Use thread form ing screws 4 to form threads as they are being instal...

Page 16: ...the displacement rod 25 pinned to the connecting rod 32 and the connecting rod 32 pinned to the piston rod 23 and piston rod 23 pinned to the priming rod 34 14 If these connections seem too rigid rem...