29
08
Repair Instructions
Manual 1843 Rev B p/n 001843 0000
4. The belts should not slip if they are correctly
adjusted and the correct starting procedure
is used. A screeching noise at start-up may
indicate the belts are too loose. Belt dressing
should not be used on V-belts. Sheaves and
V-belts should remain free of oil and grease.
Tension should be removed from belts if the
drive is to be inactive for an extended period of
time.
DISASSEMBLY
The following steps are for complete disassembly
of the pump; however, the pump should be
disassembled only to the extent necessary for
servicing. Refer to assembly drawings and parts
lists as needed. Note that the open head is
the head through which the shaft extends, and
closed head is the head on which the oil pump is
mounted.
1. Disconnect all manifolding, water lines, and
electrical connections, and drain the oil.
2. Remove the belt guard and belts.
3. Remove the oil lines from both ends.
4. Remove the motor from the top of the pump.
5. Remove the pump sheave and drive key.
6. Remove the oil sight gauge from the separator
cover. Remove the inspection cover from the
separator.
7. Remove the separator housing and gasket
from the cylinder.
The separator housing has threaded holes to
receive eye bolts for lifting the pump. When the
separator housing is removed, do not attempt
to lift the pump cylinder by using the gas
ballast or oil drain piping to attach or support
rigging for hoisting the cylinder.
8. Unscrew the air/oil separator assembly.
Remove the valve cover from the cylinder.
9. Remove the discharge valves. If valves are
disassembled, be sure to understand the
procedure for proper reassembly.
10. Remove bearing retaining plate.
11. Unscrew the retainer nut from the shaft.
12. Remove the cap screws from the housing.
13. Remove the bearing, housing and stationary
parts of the shaft seal.
14. Remove the rotating part of the shaft seal.
15. Remove the oil pump and housing from the
closed head. Remove the closed head using
two securing bolts as jackscrews to break
the seal between head and cylinder after
all securing screws are removed. Press the
sleeve bearing from the head.
16. Withdraw the slide pin, piston, cam and slide-
pin spacer.
17. Remove the retaining ring from the shaft.
Loosen the socket head self-locking screws in
the removable wall to release the pins securing
the wall to the cylinder. Remove the wall, being
careful not to cock it as it is removed.
18. Withdraw the slide pin, piston and slide-pin
spacer.
19. Remove the open head following the same
procedure as removing the closed head and
press the bearing from the head.
20. Withdraw the piston, slide pin and cam.
21. The shaft and center cam can be taken out of
the closed head end of the pump. Press the
center cam from the shaft.