JLG 600SC_660SJC Service Manual - Manual (Page 54)

SECTION 3 - CHASSIS & TURNTABLE
3-18 – JLG Lift – 3121607
Assembly
Handle all parts with care to prevent damage.
Replace all seals when disassembling motor.
Clean all parts. Check for dust, damage, scratches, or other
damage before assembly. Replace all Seals and bearings.
GEAR BOX
1. Grease Floating seals. Install one Floating Seal in Flange.
2. Put other Floating Seal on Floating seal already set on
Flange. Ensure concentricity of Floating Seals.
3. Press inner race of Angular Bearing in Flange.
4. Press outer races of both Angular Bearings in Housing
from both sides.
5. Carefully place Housing on Flange.
6. Press inner race of Angular Bearing remaining in Flange.
7. Press top of inner race of Angular Bearing already
installed in Flange with even thrust force of 3000kgf.
While pressing, measure gap.
8. Press Pins in Flange so Pins project from Flange 26.5 –
27.5 mm.
9. Grease Shim(s) and place on bottom surface of Holder C
S/A (203).
10. Put Holder C S/A on Flange. Pins must be properly
inserted in Flange.
11. Apply High Strength Thread Locking Compound (JLG P/
N 0100019 to Socket Head Bolts and evenly tighten
them into flange.
12. Tap Pins on Housing so Pins project from the top surface
of the Flange by17mm.
13. Install O-Ring in Housing.
14. Put Ring Gear on Housing. Tighten Socket Head Bolts
evenly.
15. Ensure Snap Rings and are properly installed in Sun Gear
C and Sun Gear B. Put Sun Gear C in Holder C S/A, Holder
B S/A on Sun Gear C, and Sun Gear B in Holder B S/A.
16. Grease Thrust Plate and place on bottom surface of
Holder A S/A.
17. Put Holder A S/A on Sun Gear B.
18. Put Drive Gear in Sun Gears B and C. Drive Gear must be
properly engaged with planetary gears of Holder A S/A.
19. Place Thrust Plate on Drive Gear (204).
20. Degrease contact surface of Ring Gear and Cover. Apply
liquid gasket evenly and put Cover on Ring Gear. Tighten
Socket Head Bolts.
21. Apply Teflon tape to plugs. Install and tighten Plugs.
22. Position Gear Box with piston motor side up. Degrease
thread surface of Socket Head Bolts and thread hole of
Flange.
23. Apply Locktite 217 or equivalent on thread surface of
Socket Head bolts. Install Plates in Flange. Tighten
Socket Head Bolts.
24. Ensure Pin is completely inserted in Coupling. Install
coupling on spline shaft Drive Gear.
MOTOR SECTION
1. Apply grease to Oil Seal and press into Flange. Ensure Oil
Seal is completely seated.
2. Place two Springs in bores at bottom of Flange. Apply
grease on sliding surfaces of two Piston Assemblies and
insert in bores.
3. Press Ball Bearing on Shaft. Insert Shaft in Flange. Ensure
Shaft rotates smoothly.
4. Apply hydraulic fluid on two Steel Balls and spherical
hollows at bottom of Flange. Place Steel Balls in hollows
and Swash Plate in Flange.
5. Place Spring Seat, Spring and Collar in Cylinder Block.
Compress Spring and install Snap Ring.
6. Apply grease on three Pins. Insert Pins in Cylinder Block.
Place Retainer Holder on Cylinder Block.
7. Insert nine Piston Assemblies through flat side of
Retainer Plate.
8. Apply hydraulic fluid in bores of Cylinder Block and on
spherical surface of Retainer Holder. Insert Piston
Assemblies in Cylinder Block.
9. Apply hydraulic fluid on sliding surface of Swash Plate
and sliding surfaces of nine Piston Assembly shoes.
Insert Cylinder Block Assembly on Shaft.
10. Submerge Valve Plate in hydraulic fluid before assembly.
Place Disk Plate, Friction Plate, Disk Plate, Friction Plate,
and Disk Plate in Flange (1).
11. Fit O-Rings in grooves of Brake Piston. Apply grease on
sliding surface of Brake Piston. Insert in Flange so holes
for pins on Brake Piston and Case align.
12. Put Springs on Brake Piston.