General information, Reverse shaft rotation of pump, Assembly – JLG 510AJ Service Manual User Manual
Page 261
SECTION 5 - HYDRAULICS AND HYDRAULIC SCHEMATICS
3121181
– JLG Lift –
5-41
General Information
It is important that the relationship of the mounting flange,
bearing blocks and gear housing is correct. Failure to properly
assemble this pump will result with little or no flow at rated
pressure.
Reverse Shaft Rotation of Pump
NOTE:
This pump is not bi-rotational, if the shaft rotation must be
changed the following procedure must be followed.
Reversing the shaft rotation of the "W" series gear pump may
be accomplished by rotating, as a group, the two bearing
blocks and the gear housing 180° in relationship to the
remaining parts of the pump. This procedure will place the
pressure port on the opposite side of the pump from its origi-
nal position.
Assembly
NOTE:
New seals should be installed upon reassembly of pump or
motor. deter to page 8 for the necessary kit part numbers
for the W-600, W-900 and W-1500 pumps and motors.
1.
Install new shaft seal in mounting flange with part lum-
ber side facing outboard. Press the seal into the seal lore
until the seal reaches the bottom of the bore. Uniform
pressure must be used to prevent misalignment or dam-
age to the seal.
2.
Install retaining ring in groove in seal bore of mounting
flange.
3.
Place front and back bearing blocks on a clean surface
with the E-seal grooves facing up. Apply a light coating
of petroleum jelly in the grooves. Also coat the E-seal
and backup with the petroleum jelly, this will help keep
the seals in place during reassembly.
4.
Place the E-seals, flat side outward, into the grooves in
both bearing blocks. Follow by carefully placing the
backup ring, flat side outward, in the groove made by the
E-seal and the groove in the bearing block. (Note: in the
W900 series pump, in the center of the backup ring and E-
seal there is a notch make sure that these notches line up so
the backup ring will set flush with the E-seal). The backup
ring in the W1500 pump is symmetrical.
5.
Place mounting flange, with shaft seal side down, on a
clean flat surface.