Graco LD 24H854, Repair Instructions

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Instructions
3A1495C 3
Instructions
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.
Inspect all parts when disassembling the pump. Replace
any and all worn and damaged parts.
Pressure Relief Procedure
1. Close the pump’s bleed-type master air valve.
2. Close the pump air regulator and disconnect the air
supply hose.
3. Open the dispensing valve and dispense fluid into a
waste bucket/container until pressure is fully
relieved.
If you suspect that the dispensing valve is clogged, or
that pressure has not been fully relieved after following
the steps above,
very slowly loosen the dispensing
valve coupler or hose end coupling to relieve pressure
gradually, then loosen completely.
Disassembly
The following disassembly instructions describe the pro-
cedure for completely disassembling the LD grease
pump. 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 used in the following instruc-
tions correspond to the reference numbers used in the
LD Series Oil and Grease Pump instruction manual.
1. Stop the pump. Follow Pressure Relief Procedure ,
page 3.
2. Disconnect and remove the pump from its installed
location.
3. Clamp the pump (1) upside down in a vise as shown
in Fig. 1.
NOTE: Take care to only use enough clamping
force to hold the pump in position. The pump cylin-
der is aluminum and could be damaged by using
excessive clamping force.
If you are only servicing the air valve (40) and seals
(18) or air piston (15), skip Steps 4 - 14.
The equipment stays pressurized until pressure is manually
relieved. To reduce the risk of serious injury from pressur-
ized fluid, fluid from the valve, or splashing fluid, follow the
procedure whenever you:
• are instructed to relieve pressure
• stop dispensing
• check, clean, or service any system equipment
• install or clean dispensing devices.
Fig. 1
1