JLG 340AJ, Service And Maintenance Manual

Page: 63 / 370

SECTION 3 - CHASSIS & TURNTABLE
3121259 – JLG Lift – 3-21
Housing-Spindle Subassembly
NOTE: Spray a light film of oil on all component parts during
assembly. Spray a generous amount of oil on bearings dur-
ing installation.
1. With housing flange side up and press outbound Ball
Bearing (1C) into Housing (1D) using Bearing Pressing
Tool.
2. Turn housing over and press inbound Ball Bearing (1C)
into Housing (1D) using Bearing Pressing Tool.
3. Grease Lip Seal (1B) and then press lip seal into Housing
(1D) using Seal Pressing Tool until seal is flush with end
of housing.
4. Secure Housing (1D) and press Studs (1H) into housing.
NOTE: Use enough pressure to press in studs. Don’t use excessively
high pressures to press in studs or the housing may crack.
5. Secure Spindle-Brake Subassembly with the flange
down and then lower the Housing (1D) onto Spindle
(1A).
6. Apply Loctite 272 on Bearing Nut (1F) threads. Install the
Bearing Nut (1F) onto Spindle (1 A) with a nut torque of
100-110 in-lbs. Make sure the bearings have 0.001 -
0.005 inches end play with a dial indicator sitting on the
spindle and dial on the housing with prying bars.
7. Install Set Screws (1G) into Bearing Nut (1F) threaded
holes. Make sure Set Screw (1G) is driven into the spin-
dle threads. Tighten the set screws to damage the
threads and stake the edge of the nut around the Set
Screws (1G) so the nut will not loosen.
Figure 3-19. Housing-Spindle
1A. Spindle
1B. Lip Seal
1C. Ball Bearing
1D. Housing
1F. Bearing Nut
1G. Setscrew
1H. Stud