JLG 1250AJP Service Manual - Manual (Page 82)

SECTION 3 - 1CHASSIS & TURNTABLE
3-34 – JLG Lift – 3121171
37. By using a puller and a metal stopper, remove the
flanged hub (31) from the gearbox housing (23).
38. By using a tackle remove the gearbox housing (23)
from the flanged hub (31).
39. Remove the seal ring (30) from its seat in the flanged
hub (31).
NOTE: In case of oil leaks, it may be necessary to check
and eventually replace the lifetime seal (29), which
means both the metal rings parts and the O-ring
seals.
40. By using a screwdriver, remove the 1st half-seal (29)
from the flanged hub (31).
41. By using a screwdriver, remove the 2nd half-seal
(29) from the gearbox housing (23).
NOTE: The gearbox disassembly ends with the above oper-
ation. All items are now available for the necessary
inspections.
Inspection of Parts
The pieces that are subject to general wear and tear are
the following:
- Gears.
- Bearings.
- All the seals
Replace the used or irregular parts using the following
steps:
1. Remove dirt, and in particular properly clean the
seals, bearings and locking rings seating.
2. Lubricate the parts before connecting them.
3. In the case of damaged gears, for example a plane-
tary, do not proceed to replace the individual gear
but the entire reduction assembly.