JLG 450AJ Service Manual User Manual
Page 46
SECTION 2 - PROCEDURES
2-30
– JLG Lift –
3120869
5.
Repeat steps 2 thru 4 for the remaining two planet
gears.
6.
Remove the bearing needles (13) and the thrust
spacer (14) from the planet gear (11).
Hub-Spindle Disassembly
NOTE: If your unit does not have studs, then skip step 1.
1.
Hammer the studs (15) out of the flange of the hous-
ing (16).
SAFETY GLASSES MUST BE WORN DURING THIS STEP.
2.
Remove the retaining ring (17) from spindle counter-
bore.
3.
Remove the spacer (18) and the spring (19).
4.
Using retaining ring pliers, remove the retaining ring
(20) from the spindle (21) discard the retaining ring
at this time. Remove the thrust spacer (22) from the
spindle (21).
5.
Place on I-beams and press the top of the spindle
through the housing.
NOTE: The outboard bearing and seal will have to be
removed from the spindle. You will have to scrap out
the seal and bearing to remove them from the spin-
dle.
6.
Remove the inboard bearing (23) from the inboard
cup (24).
7.
Using a hammer and a thin barstock punch, drive
the cups out of the housing.
Main Disassembly
1.
Remove coupling (25) from spindle (21).
2.
Remove retaining ring (26) from coupling (25).
3.
Remove the hex socket screws (7) from the ring
gear cover (4).
4.
Remove the ring gear cover (4) from the housing
(16).
5.
Remove the thrust washer (27) from the counterbore
of the carrier (8)
6.
Remove the carrier (8) along with the sun gear (28).
7.
Remove the input shaft (29). Take out the bottom
thrust washer (27).
8.
Take off the thrust washer (30) from the spindle
counterbore.
9.
Remove the internal gear (31) from the spindle (21).
10.
Remove the retaining ring (32) from the input shaft
(29), and discard the retaining ring.
11.
Take the O-Ring (33) out of the 0-Ring groove on the
spindle (21).
Carrier Sub-Assembly
1.
Put a generous amount of grease into the planet
gear (11).
2.
Line the inside of the planet gear (11) with sixteen
bearing needles (13). Put thrust spacer (14) on top
of bearing needles (13), then place 16 more bearing
needles (13) on top of the thrust Spacer (14).
3.
Repeat step 2 for the two remaining planet gears.
4.
Stand carrier on its side. Insert planet shaft (10) into
the hole on the side of the carrier (8) with roll pin
last.
5.
Place flat tanged washer (12) onto the planet shaft
so that the bump on the flat tanged washer is
located towards the interior of the carrier, and is
lined up with the slot on the carrier (8).
Figure 2-26. Carrier