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15-600 Page 18
level oil trough properly. Top of oil trough is to be level.
The PZG pump does not have oil trough.
Outer oil seals are to be placed in the bearing end
plate after it is bolted to the bearing housing and
frame. Coat inside of oil seal liberally with bearing
grease. The seal is to be installed with garter spring to
inside, toward bearing. Permanently bolt jackshaft
bearing housings and their end plates to the frame.
LUBE OIL PUMP
– The lube oil pump, part number
46C21, used in the PZG, PZH and PZJ pumps can be
reversed in direction when the complete gear sets are
reversed after the following procedure is completed.
Remove the oil pump with standard left hand helix
drive gear from the pump frame. Remove the drive
gear from the oil pump shaft.
Remove the end cap from the oil pump opposite the
shaft end, remove the drain plug screw opposite the oil
pump discharge port. Install the drain plug screw in the
hole provided 180
o
or opposite from the suction port.
Reverse the suction and discharge lines to the lube oil
pump and reverse the data tag “IN – ROTATION –
OUT”. The drain plug screw must be installed in the
pump body opposite the oil pump discharge port.
Replace the end cap.
Install the optional right hand helix drive gear on the oil
pump shaft. Install the oil pump and gear assembly on
alternate mounting pad in the pump sump to mesh with
reversed eccentric gear.
The lube oil pump, part numbers 46C58 (previous
production) and 201PAH188 (current production), used
in the PZK, PZL & PXL pumps can be reversed in
direction without modification to the pump. The oil flow
through the pump will reverse direction when shaft is
rotated in reverse.
Viewing the oil pump 46C58 from the shaft end,
rotating the shaft clockwise, the right hand pump
opening is the inlet. When rotating shaft
counterclockwise, the left hand opening is the inlet and
the right hand opening becomes the outlet.
When shaft rotation of the 201PAH188 oil pump
changes direction, the direction of flow changes
without changing inlet and outlet port positions.
When reversing the complete gear sets on PZK, PZL
and PXL pumps, the left hand helix pump drive gear
must be replaced with an optional right hand helix
drive gear. Install the oil pump and drive gear
assembly on the alternate sump mounting pad to mesh
with the reversed eccentric gear.
CONNECTING RODS
– The connecting rods are split
into body and cap, and bolted together without shims.
y.
FIGURE 14 – CONNECTING ROD SUPPORT
This construction is used to simplify installation and/or
removal of eccentric and gear assembly.
The upper connecting rod bolt is inserted from the cap
side to avoid interference with jackshaft. The lower bolt
is inserted from body side to make nut easily
accessible.
Crosshead pins with bearing inner races can be
removed without disturbing the connecting rods on
PZG, PZH and PZJ pumps. On the PZK, PZL & PXL
pumps, the hood must be removed and the connecting
rods loosened from the cap and parted by about one
inch (25.4 mm) before the center crosshead pin will
clear the outside connecting rod.
Always protect crosshead slide in frame by placing a
block of wood under small end of connecting rod. If
slide should be accidently damaged, be certain to
stone damaged area so no metal projects above slide
surface. DO NOT USE EMERY CLOTH.
When caps are removed, the bodies of the connecting
rods can be supported by wiring or tying them to cap
screws temporarily screwed into hood ledge above
them. Do not damage hood gasket surface. See
FIGURE 14.
Remove eccentric bearing retainers from the
connecting rod body and cap before cap is removed.
Replace retainers after connecting rods have been
reassembled. Be sure to wire the cap screws securely.
Connecting rod bolt nuts are to be tightened to
recommended torque shown on pages 31 and 32. The
Pal locknuts are to be driven against nut by hand and
then tightened 1/3 to 1/2 turn.