JLG 450A_AJ Series II Service Manual - Manual (Page 81)

SECTION 3 - CHASSIS & TURNTABLE
3121180 – JLG Lift – 3-31
UNCONTROLLED OBJECTS CAN CAUSE EYE DAMAGE OR SERI-
OUS INJURY. ALWAYS WEAR EYE PROTECTION.
12. Using retaining ring pliers, remove retaining ring
(7B) from groove on input shaft (7A).
13. Remove one spacer (7D), one spring (7C), and
other spacer (7D) from input shaft (7A).
14. Remove thrust washer (11) from around spindle
(1A).
15. Lift internal gear (2) out of hub (1G).
16. Remove O-ring (5) from counterbore in hub (1G).
Discard O-ring.
17. Main disassembly for ”B” drives is complete.
Hub-Spindle Disassembly
NOTE: Start with large end of hub facing up and large end
of spindle facing down.
UNCONTROLLED OBJECTS CAN CAUSE EYE DAMAGE OR SERI-
OUS INJURY. ALWAYS WEAR EYE PROTECTION.
1. Remove retaining ring (1I) from around spindle (1A)
ia hub (1G).
2. Remove spacer (1H) from around spindle (1A) in
hub (1G).
3. Set hub (1G), with small end/spindle facing down,
on something that will support the hub’s flange while
it lifts hub up so spindle is not resting on anything.
Carefully press or hammer spindle (1A) down and
out of hub (1G).
NOTE: If seal (1B) and bearing cone (1D) come out of hub
and rest on spindle, remove these parts from spindle
and set them aside. Discard seal.
4. If seal and bearing cone did not come out of small
end of hub (1G) when you pressed spindle out of
hub, remove seal (1B) and bearing cone (1D) from
small end of hub (1G). Discard seal.
5. Bearing cone (1F) should be lying loose in wide end
of hub (1G). Remove bearing cone (1F) from inside
hub (1G).
NOTE: Do not strike counterbore with punch if using a
punch and hammer when removing bearing cup.
6. Remove bearing cup (1C) from counterbore in small
end of hub (1G).
NOTE: Do not strike counterbore with punch if using a
punch and hammer when removing bearing cup.
7. Turn hub (1G) over and lift it out of flange-support.
Remove bearing cup (1E) from counterbore in wide
end of hub (1G).
8. Turn hub (1G) over onto its small end. Remove two
pipe plugs (1J) from side of hub (1G).
NOTE: If your unit does not have studs, skip this step.
9. Press nine studs (1N) out of stud holes in hub (1G).
10. Hub-spindle disassembly is complete.
Cover Disassembly
1. Remove two bolts (6C) holding disconnect cap (6D)
to cover (6A).
2. Remove disconnect cap (6D) from on top of cover
cap (6B) and cover (6A).
3. Remove two bolts (6C) holding cover cap (6B) to
cover (6A).
4. Remove cover cap (6B) from cover (6A).
5. Remove disconnect rod (6K) from cover cap (6B).
6. Pry O-ring (6F) out of groove inside cover cap (6B).
Discard O-ring.
7. Remove O-ring (6G) from flange of cover cap (6B).
Discard O-ring.
8. Remove pipe plug (6H) from cover (6A).
9. Cover disassembly is complete.
Carrier Disassembly
NOTE: Discard old needle rollers and use new ones during
reassembly.
1. Using a punch and hammer, drive roll pin (3G) into
planet shaft (3E).
DRIVE ROLL PIN ALL THE WAY INTO PLANET SHAFT OR CAR-
RIER WILL BE DAMAGED WHEN PLANET SHAFT IS REMOVED.
2. Using a punch and hammer, drive planet shaft (3E)
out of planet shaft hole in carrier housing (3A).
3. When you remove planet shaft (3E) from carrier
housing, one thrust washer (38), one cluster gear
(3F), and one more thrust washer (3B) will come off
planet shaft and come to rest inside carrier. Remove
these parts from inside carrier.
4. Remove 16 needle rollers (3C) from inside one end
of cluster gear (3F). Discard needle rollers.
5. Remove one spacer (3D) from inside cluster gear (3F).
6. Remove remaining 16 needle rollers (3C) from other
side of cluster gear (3F). Discard needle rollers.