JLG 110HX Service Manual - Manual (Page 82)

SECTION 2 - PROCEDURES
2-58 – JLG Lift – 3120864
a. Using suitable snap ring pliers, remove retaining
ring (20) from groove in output shaft (30).
b. Remove spacer shim (21) from output shaft.
c. Place hub in a suitable hand-operated hydraulic
press with external portion of shaft (30) down
and with suitable block supporting hub (24).
d. Using suitable protection between inner end of
shaft (30) and press cylinder drift, operate press
and carefully press shaft from inner bearing
assembly (22 and 23).
e. Remove seal (29) from shaft and discard seal.
f. Remove bearing cone (22) from cup (23).
g. Using press, remove bearing cups (23 and 27)
from hub (24) and cone (28) from shaft (30).
Cleaning and Inspection
1. Clean all parts thoroughly in an approved cleaning
solvent.
2. Inspect bearing components (22, 23, 27, 28) for
damage, pitting, corrosion or excessive wear.
Replace bearings as a complete set if necessary.
3. Inspect all thrust washers for scoring or excessive
wear.
4. Inspect all geared or splined components for
chipped or broken teeth and for excessive or
uneven wear patterns.
5. Inspect o-ring grooves in hub (24) and cover (1) for
burrs or sharp edges. Dress applicable surfaces as
necessary.
6. Inspect all thrust washer and bearing surfaces for
damage. Repair or replace as necessary.
7. Inspect all threaded components for damage includ-
ing stretching, thread deformation or twisting.
Replace as necessary.
8. Inspect planet shafts (15) for scoring or other dam-
age. Replace as necessary.
Assembly
1. If necessary, assemble hub and shaft assembly.
a. Using a suitable hydraulic press, install bearing
cups (23 and 27) into hub (24).
b. Using the hydraulic press, install bearing cone
(28) onto output shaft (30).
c. Correctly position shaft (30) into hub (24) with
cone (28) in cup (27).
d. Using a suitable shaft support in the hydraulic
press, install bearing cone (22) on shaft (30)
until cone abuts bearing cup (23).
e. Position spacer shim (21) on shaft (30) between
retainer ring groove and bearing cone (22).
f. Using suitable snap ring pliers, install retaining
ring (20) on shaft (30).
g. Using the hydraulic press, install a new seal (29)
over shaft and into hub (24). Ensure that seal is
installed squarely.
h. Check that output shaft (30) rotates freely in the
hub. The oil seal will create a small amount of
drag. By tapping the outside of the shaft with a
soft headed mallet, any excessive tightness will
be reduced.
2. If necessary, assemble planet carrier assembly (10)
as follows:
a. Apply a light coating of petroleum jelly or multi-
purpose grease to flanged surface of thrust
washers (12).
b. Position thrust washers (12) in carrier (10) with
tang in appropriate carrier cutaway portion.
Ensure that washers are flat against surface on
both sides of carrier.
c. Apply a liberal coating of petroleum or multi-pur-
pose grease to inner diameter of cluster gear
(11).
d. Position spacer (14) at the approximate midpoint
of the gear diameter.
e. On each side of spacer (14), position needle roll-
ers (13) in inner diameter of gear.
f. Position assembled cluster gear (11) into carrier
(10) between the two thrust washers (12).
Ensure that larger gear is on the roll pin side of
carrier.
g. Position planet shaft (15) into carrier hole, with
shaft roll pin hole on same side as carrier roll pin
hole.
h. Continue inserting shaft through thrust washers
(12) and cluster gear 11. Ensure that needle roll-
ers (13) are not displaced.
i. Align roll pin holes in both shaft (15) and carrier
(10) with chamfered portion of shaft hole upper-
most.
j. Position new roll pin (16) in hole in carrier (10)
and drive pin into hole until end of pin is flush
with carrier surface.
k. Repeat steps (a) through (j) for remaining two
cluster gears.
3. Position internal gear (19) on inner end of output
shaft (30).
4. Time carrier cluster gears as follows:
a. Place carrier assembly on a flat surface, posi-
tioning two top gears at ten o’clock and two