JLG 450AJ Service Manual User Manual
Page 52
SECTION 2 - PROCEDURES
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– JLG Lift –
3120869
3.
Set hub (1G), small end/spindle facing down, up 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 out of
hub (1G).
NOTE: If seal (1B) and bearing cone (1D) come out of hub
and rest on spindle, remove these parts from the
spindle and set them aside. Discard the seal.
4.
If seal and bearing cone did not come out of the
small end of hub (1G) when the spindle was pressed
out of the hub, remove seal (1B) and bearing cone
(1D) from the small end of hub (1G). Discard the
seal.
5.
Bearing cone (1F) should be lying loose in wide end
of hub (1G). Remove the bearing cone (1F) from
inside of the hub (1G).
NOTE: If using a punch and hammer, make sure not to
strike the counterbore with the punch when remov-
ing the bearing cup.
6.
Remove the bearing cup (1C) from the counterbore
in the small end of the hub (1G).
NOTE: If using a punch and hammer, make sure not to
strike the counterbore with the punch when remov-
ing the bearing cup.
7.
Turn hub (1G) over and lift it out of the flange-sup-
port. Remove the bearing cup (1E) from the counter-
bore in the wide end of hub (1G).
8.
Turn hub (1G) over onto it’s small end. Remove two
pipe plugs (1J) from the two pipe plug holes in the
side of the hub (1G)
9.
Press the studs (1N) out of the hub (1G).
Cover Disassembly
1.
Remove the two bolts (6C) holding the disconnect
cap (6D) to the cover (6A).
2.
Remove the disconnect cap (6D) from on top of
cover cap (6B) and cover (6A).
3.
Remove the two bolts (6C) holding the cover cap
(6B) and cover (6A).
4.
Remove cover cap (6B) from cover (6A).
5.
Remove disconnect rod (6E) from cover cap (6B).
6.
Pry o-ring (6F) out of the groove inside cover cap
(6B). Discard the o-ring.
7.
Remove o-ring (6G) from the flange of cover cap
(6B). Discard the o-ring.
8.
Remove pipe plug (6H) from cover (6A).
Carrier Disassembly
NOTE: When you remove the needle rollers from the cluster
gears, discard the old needle rollers and use new
ones during re-assembly.
1.
Using a punch and hammer, drive roll pin (3G) into
planet shaft (3E).
NOTE: If the roll pin is not driven all the way into the planet
shaft, the carrier could be damaged when removing
the planet shaft from the carrier.
2.
Using a punch and hammer, drive planet shaft (3E)
out of the planet shaft hole in the carrier housing
(3A).
3.
When removing planet shaft (3E) from the carrier
housing, one thrust washer (3B), one cluster gear
(3F), and one more thrust washer (3B) will come off
of the planet shaft and come to rest inside the car-
rier. Remove these parts from inside the carrier.
4.
Remove 16 needle rollers (3C) from inside one end
of cluster gear (3F). Discard the needle rollers.
5.
Remove one spacer (3D) from inside the cluster
gear (3F).
6.
REmove the remaining 16 needle rollers (3C) from
the other side of cluster gear (3F). Discard the nee-
dle rollers.
7.
Repeat steps 1 thru 6 to remove and disassemble
the two remaining clusters.
Assembly of the Carrier
1.
Apply grease to the inside of one cluster gear (3F)
and line one half of cluster gear with 16 needle roll-
ers (3C).