Main Gearbox Assembly - Oshkosh JLG 1930ES Service Maintenance Manual

SECTION 3 - CHASSIS & SCISSOR ARMS

Main Gearbox Assembly

1. Spindle Sub-Assembly
2. Spiral Snap Ring
3. Input ring Gear
4. Input Sun Gear
1. Inspect seal surface of spindle. Remove any debris
that may be present.
2. Apply a coating of grease to the lip seal of the hub
sub-assembly.
3. Place Spindle Sub-Assembly on table with carrier
side up.
4. Carefully install the hub sub-assembly (seal side
down) onto the spindle. This installation should be
a slip fit and takes place in 3 stages.
a. Stage 1: The hub slides together until the gear
teeth of the hub hit the gear teeth of the 3 out-
put planets.
3-14
5. Cover O-Ring
6. Cover Thrust Washer
7. Cover
8. Cover Snap Ring
Figure 3-10. Main Gearbox Disassembly
9. Pipe Plug
10. Input Carrier Sub-Assembly
11. Hub Sub-Assembly
b. Stage 2: Find the planet gear that is tight and
turn it until you feel it go into mesh with the
hub gear teeth, apply slight downward pres-
sure to the hub and then find the next gear
that is tight and do the same.
c. Stage 3: Once all the planet gears are in mesh
apply pressure to the hub, it should go on the
rest of the way.
5. Install retaining ring into the groove on the OD of
the spindle carrier. This is a spiral retaining ring so
it will not require pliers. You will need to pull the
retaining ring apart and work it into the groove.
3121656