JLG 600SC_660SJC Service Manual - Manual (Page 55)

SECTION 3 - CHASSIS & TURNTABLE
3121607 – JLG Lift – 3-19
BASE PLATE
1. Press Bearing in Base Plate.
2. Insert Pin in Valve Plate.
3. Apply grease to back of Valve Plate. Place Valve Plate on
Base Plate with bronze color side up.
4. Apply grease to O-Ring and place it on Case.
5. Place O-Rings on Case without grease. Insert Pins in Base
Plate with tapered side up.
6. Place Base Plate on Case. Do not allow any parts under
Base Plate to fall out. Tighten Socket Head Bolts.
7. Insert Spool, Spring, and Spring Guide in Base Plate.
Ensure O-Rings are installed in Plugs. Tighten Plugs in
Base Plate.
8. Install Poppet Seat at top of Relief Valve. Apply grease to
Relief Valve O-Rings. Insert Relief Valve Assembly in Base
Plate and Tighten.
9. Insert Plunger Assembly in Base Plate. Place Spring Seat,
Spring, and another Spring Seat on each side of Plunger
Assembly. Ensure O-Ring is put in groove on Cap Assem-
bly. Put both Caps on Base Plate. Tighten Socket Head
Bolts.
Install Motor Assembly
1. Clean drive motor. Wash motor mount area inside and
out using brush and solvent container. Wipe dry using
clean, dry rags.
2. Clean machined mounting surfaces.
3. Get hardware for mounting drive motors and place
washers on each bolt. Apply JLG Thread Locking Com-
pound PN 0100011.
4. Lift drive assembly in place with adequate lifting device
and nylon straps. Level, check, and fill (if needed) oil.
Apply Anti-Seize Compound to motor mount area. Re-
align motor in nylon straps as needed & assemble to car-
body. Torque to 230 ft-lb +15-0 (322 Nm, +21 -0).
NOTE: Sprockets are not directional.
5. Apply Anti-Seize Compound to sprocket mounting area.
Hook to crane using strap and alignment pin. Lift up and
place on motor drive. Secure with bolts and JLG Thread
Locking Compound PN 0100011. Torque to 230 ft-lb +1.
6. Starting with brake hose for easy access, torque three
small hoses on both sides of drive motor according to
torque chart specifications.
7. Torque two large hoses on drive motor according to
torque chart specifications.
8. Place washers on cover plate retaining bolts and apply
JLG Thread Locking Compound PN 0100011 on each
bolt. Install cover plates and torque bolts according to
chart specifications.