SECTION 4 - HYDRAULICS
4-12 – JLG Lift – 3121642
NOTE: A somewhat heavier wear pattern is normal on the low
pressure (inlet) side of the bearing blocks (2). However,
there should be no heavy scoring in this area.
3. Remove anti extrusion seal (4) and pressure loading seal
(3) from each bearing block and discard.
4. Inspect bushings in each bearing block (2). Replace
bearing block if bushings are heavily scored or burned.
5. Inspect gear journals and faces. Replace if faces or jour-
nals are scored or worn.
6. Inspect body for wear and scoring. If gear contact wear
on low pressure side (inlet) exceeds 0.005 in. (0.127mm)
depth, replace body. If the body is usable, lightly wipe
and remove burrs with suitable de-burring tool.
Pump Reassembly
1. Place the front cover (5) on a flat plate with the steel
shaft seal bore up. Install new shaft seal (1). Press seal
until it is 0.157 in (4.0mm) below front surface. Pack the
area between the double lip of the seal with Lubriplate
or an equivalent grease.
.
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