JLG 3246ES Service Manual - Manual (Page 67)

SECTION 3 - CHASSIS & SCISSOR ARMS
3121166 – JLG Lift – 3-31
brush shunts do not interfere with spring move-
ment.
5. Assemble the commutator end head to the frame
and field assembly (1) and tighten the screws to
120-140 in-lb. [13.6-15.8 N-m]. Make sure to align
the field connection with the notch in the commu-
tator end head. Seal wires where they exit from
commutator end head with a small amount of RTV
Silicone Sealant.
6. Align wires from brake assembly (11) into notch in
friction disc (10). Install both items onto shaft of
motor aligning wires with groove in commutator
end head. Secure brake assembly to commutator
end head using 3 bolts and apply small bead of
RTV Silicone sealant around wires between friction
disc and commutator end head and in notch in
friction disc.
7. Install wire harness (8) to motor by connecting the
field and brake connectors and securing the arma-
ture terminals to the terminal studs. Refer to Figure
2 for proper connections. Motor terminals must be
assembled as shown in the figure above. Always
secure the bottom nut with a wrench as you
tighten the top nut. Torque top nut to 90-110 in-
lb. [10.2-12.4 N-m].
8. Remove manual release screws from brake assem-
bly. Apply new o-ring (13) and affix cover (15) to
motor using the 2 manual release screws. A small
dab of RTV Silicone sealant may be used to secure
the o-ring into the o-ring groove in the cover to
aid in assembly.
9. Assemble strain relief bushing (14) around jacket
of wire harness and slide into slot in cover.
10. Align cover plate (12) with groove in frame and
field and affix using 2 screws.
MOTOR CABLE
SECURING NUT
CABLE LUG
TERMINAL
SECURE NUT WHILE
APPLYING TORQUE
STUD TERMINAL
SECURING NUT
FLAT WASHER
INSULATING WASHER
MOTOR HOUSING
Figure 3-28. Terminal Tightening