Cleaning and inspection, Assembly, Cleaning and inspection -4 assembly -4 – JLG 150HAX Service Manual User Manual
Page 42
SECTION 3 - CHASSIS & TURNTABLE
3-4
– JLG Lift –
3120817
Cleaning and Inspection
1.
Thoroughly clean all parts in an approved cleaning
solvent.
2.
Inspect geared or splined components in primary
and secondary planet carriers, input and output sun
gears, ring gear, coupling and input shaft for
chipped or broken teeth, and excessive or uneven
wear patterns. Replace components as necessary.
3.
Inspect all thrust washers for scoring, pitting, ero-
sion, discoloration or excessive wear. Replace thrust
washers as necessary.
4.
Inspect all bearing cones and cups for scoring, pit-
ting or excessive wear. If necessary, using a suitable
press, remove bearing cups from hub and replace
bearings as a set.
5.
Inspect all needle rollers for scoring, pitting or
excessive wear. Replace all rollers as necessary.
6.
Inspect planet gear pins for grooves, scoring or
excessive wear. Replace pins as necessary.
7.
Inspect all threaded components for damage includ-
ing stretching, thread deformation, or twisting.
Replace as necessary.
8.
Inspect oil seal surfaces in hub and spindle for burrs
or sharp edges. Dress applicable surfaces or
replace components as necessary.
9.
Inspect mating surfaces of hub, ring gear and cover
for burrs and sharp edges. Dress applicable sur-
faces or replace components as necessary.
Assembly
1.
If necessary, assemble the hub/spindle assembly
(36 and 30) as follows:
a. With large open end of hub (36) up, press bear-
ing cup (33) into hub. If no press is available,
bearing cup may be frozen and tapped into
place with a non-metallic faced hammer.
b. Turn hub over, small diameter up. Install two
pipe plugs (37) into hub.
c. Press bearing cup (33) into small diameter end
of hub. If no press is available, bearing cup may
be frozen and tapped into place with a non-
metallic faced hammer.
d. Install bearing cone (32) into bearing cup.
e. Press seal (31) into hub counterbore with flat
metal side facing out. Use a flat object to ensure
that seal is pressed evenly and is flush with hub
face.