Install brake armature (5) and two springs
(6). Compress the springs and install
assembled field (8), securing with nuts
(10). Tighten nuts to seat field (8) with a
0.020-0.030 inch gap to armature (5).
If removed, install
bracket (38), securing with screws (35).
Install assembled bracket and contactor to
frame assembly with screw (41), at upper
mounting hole of bracket.
Secure control cable and ground lead of
power cable (23) to boss in frame
lockwasher (17), and screw (16).
Refer to noted tags on control and power
cables (22 and 23) and wiring diagram
(Figure 4-8) and connect all electrical
leads. Carefully coil all long leads without
sharp bends and tape to ensure leads will
not touch brake discs.
Carefully install cover (11, Figure 4-3)
without pinching wore leads, securing with
two screws (13) and lockwashers (14).
Assembly - Lower Hook Assembly and Loose
End Chain (Figure 4-4)
If removed, install latch (48) and latch
spring (50), applying torque to the spring
to keep the latch closed. Secure latch and
spring with screw (49) and nut (51).
Assemble lower hook (47), body (46),
washer (45), and thrust bearing (44).
Secure with castle nut (43), tightening nut
firmly and then back off nut to align slot in
nut with hole through stem of hook (47)
and install pin (52).
Position the lower hook body (46) in a vice
with the larger pin hole facing up. Slide
last link of load chain in slot of block (54)
and position block into lower hook body,
ensuring that bore is with the pin hole in
hook body. Install pin (53), small end first,
and seat pin with hammer until flush with
surface of hook body.
Install loose end chain (15) to loose end
block (16) and secure with pin (17).
Install stop block (19) onto end of load
chain (55) and insert last link into the loose
end block (16). Secure the load chain with
Secure end of loose end chain (15) to
motor housing (56) with capscrew (14),
lockwasher (13), and flat washer (12).
Install the electric hoist (2, Figure 2-12) to
suspension hook to the trolley.
Install the drum sling (3) in the lower hook
assembly as shown in figure 2-12.
Connect the power cord to an approved
110 volt power supply furnished for the
4-15 (4-16 Blank)