Alemite 8702-A Manuel d'entretien - Page 5
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High-Pressure Hydraulic Pump
IMPORTANT: Prior to performing any
maintenance procedure, the following safety
precautions must be observed. Personal
injury may occur.
WARNING
Do not use halogenated hydrocarbon sol-
vents such as methylene chloride or 1,1,1-trichlo-
roethane in this pump. An explosion can result
within an enclosed device capable of containing
pressure when aluminum and/or zinc-plated parts
in the pump come in contact with halogenated
hydrocarbon solvents.
Release all pressure within the system prior to
performing any overhaul procedure.
•
Disconnect the hydraulic supply line from the
pump motor.
•
Into an appropriate container, operate the
control valve to discharge remaining pressure
within the system.
Never point a control valve at any portion of your
body or another person. Accidental discharge of
pressure and/or material can result in injury.
Read each step of the instructions carefully. Make
sure a proper understanding is achieved before
proceeding.
Overhaul
NOTE: Refer to Figure 2 for component
identification on all overhaul procedures.
Disassembly
1. Loosen Setscrew (34) that secures Follower Tube (35)
to Adapter (5).
• Remove the Follower Tube from the Pump.
2. Remove O-Ring (33) from the Follower Tube.
3. Secure the pump assembly in a soft-jaw vise at
Adapter (5).
4. Extend Rod (29) from Primer Body (36).
Alemite LLC
5. Gently remove Nut (32) from the Rod.
• Use an appropriate size punch in the hole of the Rod
to prevent rotation. See Figure 2.
6. Remove Primer Disc (31) from the Rod.
7. Push the Rod into the Primer Body.
Pump Tube (Outer Components)
8. Rotate the Primer Body.
• Use a large wrench or other suitable tool.
NOTE: The pump tube will break at one of
three places. Unscrew the separated portion
from the fastened components of the pump
tube assembly.
9. Unscrew the hydraulic motor from Adapter (5).
• Rotate the hydraulic motor assembly.
10. Remove O-Ring (4) from the Adapter.
NOTE: If the pump was not leaking at the
top of Tube (18), do not separate the Adapter
from the Tube. Components are locked with
Loctite 222.
11. Unscrew Tube (18) from the Adapter as required.
• Remove Gasket ( 6 ).
12. Clamp Retainer (20) horizontally in a soft-jaw vise.
13. Unscrew the Primer Body from Extension (24).
IMPORTANT: Remove Valve Seat (28)
squarely from the Primer Body. Should the
Valve Seat cock during removal, realign and
start again. Gasket (6) may interfere.
14. Remove Valve Seat (28) from the Primer Body.
15. Remove Gasket (6) from the Valve Seat.
16. Unscrew the Extension from the Retainer.
17. Remove Gasket (23) from the Extension.
18. Remove Valve Body (27) from the Extension.
• Remove Stop Washer ( 2 5).
19. Remove Seal (26) from the Valve Body.
20. Remove Bearing (22) and Seal (21) from the Retainer.
21. Unscrew Tube (18) from the Retainer.
22. Remove Gasket (6), Bearing (19), and additional
Gasket (6) from the Retainer.
5
SER 8702
Revision (1-10)