Main Gearbox Disassembly - Oshkosh JLG 1930ES Service Maintenance Manual

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.
NOTE: The input ring gear is held in with a press fit on its
outside diameter. Insert jacking screws (1/4-20UNC
grade 8) with at least 1.5 inches of thread length into
3121656
5. Cover O-Ring
6. Cover Thrust Washer
7. Cover
8. Cover Snap Ring
Figure 3-4. Main Gearbox Disassembly
SECTION 3 - CHASSIS & SCISSOR ARMS
9. Pipe Plug
10. Input Carrier Sub-Assembly
11. Hub Sub-Assembly
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-
assembly.
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