TM5-3810-305-10
18. With a 36 mm socket, remove stop pin and
lockwasher from torque arm bracket on side
of rotary manifold. Stem stop pin and lock-
washer in tool box.
19. Disconnect wire harness (Figure 5-17) con-
nected to electrical collector ring.
20. Relieve pressure in extend-retract valve
circuit by turning ignition switch ON, hold-
ing on anti-two block BY-PASS switch and
operating boom telescope lever in both direc-
tions several times until pressure is released.
Turn ignition switch OFF and proceed as fol-
lows:
a.
b.
c.
Disconnect boom extend-retract hose
quick disconnects from rotary manifold.
Remove two plugs size 12 from tool box
and plug hoses.
Roll both hoses back to rear opening and
hang the right extend hose over lip of
opening. Hang left retract hose over right
extend hose and under tab (Figure 5-18).
NOTE
Make sure that all capscrews and
stop pin are removed from inside
upperstructure and wire harness
is disconnected from electrical
collector ring.
21. Start engine. Lower hook block 12 in. (305
mm) from boom head and proceed as fol-
lows:
a. Lower boom to horizontal position.
b. Shut engine off.
Figure 5-18 Location of Boom Extend-Retract Hoses
After Disconnection
5-13
