Main Gearbox Disassembly - JLG 1930ES Service Maintenance Manual

SECTION 3 - CHASSIS & SCISSOR ARMS

Main Gearbox Disassembly

1. Spindle Sub-Assembly
2. Spiral Snap Ring
3. Input ring Gear
4. Input Sun Gear
1. Using a screwdriver, pry off the cover snap ring.
2. Remove cover. Cover Thrust washer should be in
the inner counter bore of the cover.
NOTE: To grip the cover for removal a pipe may need to be
inserted into the pipe plug holes.
3. Remove input sun gear.
4. Remove input carrier sub-assembly.
5. Remove cover o-ring.
6. Remove input ring gear.
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5. Cover O-Ring
6. Cover Thrust Washer
7. Cover
8. Cover Snap Ring
Figure 3-11. Main Gearbox Disassembly
NOTE: The input ring gear is held in with a press fit on its
– JLG Lift –
9. Pipe Plug
10. Input Carrier Sub-Assembly
11. Hub Sub-Assembly
outside diameter. Insert jacking screws (1/4-20UNC
grade 8) with at least 1.5 inches of thread length into
each of the three tapped holes to force the ring gear
out. Be sure and alternate between the jacking
screws to keep the ring gear from becoming mis-
aligned in the bore. The screws will push against the
outer race of the main bearing. This bearing will
have to be replaced afterwards.
7. Using a screwdriver remove spiral snap ring.
8. Pull hub sub-assembly off of the spindle sub-assem-
bly.
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