JLG 600SC_660SJC Service Manual - Manual (Page 45)

SECTION 3 - GRADALL CHASSIS
3121157 – JLG Lift – 3-1
SECTION 3. GRADALL CHASSIS
3.1 ASSEMBLY
1. Place frame into upside down position.
2. Make sure roller mounting rails are clean.
3. With air gun, blow out all 48 roller mounting holes.
Wipe mounting surfaces clean with rag. verify all
threads are clean of grease & oil.
4. Using crane, position and align (12) rollers, (6) per
side. Assemble with hardware and loctite. torque
(48) bolts to 200 ft.-lbs, +15-0 (280 Nm, +21 -0).
5. Using brush and solvent container, wash both inside
and out on both motor mounts areas. Using dry
rags, wipe motor mount area dry, inside and out-
side.
6. Clean the machined mounting surfaces on each
drive motor.
7. Get hardware for mounting drive motors and place
washers onto each bolt and add loctite.
8. Lift the drive assembly into place using an adequate
lifting device and nylon straps. Level, check, and fill
(if needed) the oil content. Apply Never Seez to
motor mount area. Re-align the motor in the nylon
straps as needed & assemble to carbody. Secure
with bolts using impact wrench. Torque to 230 ft-lbs,
+15-0 (322 Nm, +21 -0).
9. Repeat process to opposite side:
10. Clean machined mounting surface (one side only)
with solvent rags.
NOTE: Sprockets are not directional.
11. Apply never seez to sprocket mounting area. Hook
to crane using strap and alignment pin. lift up and
onto motor drive. Secure with bolts and loctite.
torque to 230 ft-lbs, +15-0 (322 Nm, +21 -0).