TM 5-3810-306-34
MAIN AND AUXILIARY BOOM NOSE ANTI-TWO-BLOCK SWITCH INSTALLATION
SUPPLIES: None
EQUIPMENT CONDITIONS:
Negative battery cable disconnected at shunt.
(Refer to TM 5-3810-306-20.)
REMOVAL:
1. REMOVE ANTI-TWO-BLOCK SWITCH (10).
a. Remove nuts (1), washers (2) and cover (3) from
switch (10).
b. Remove screws (4) and switch contact cover (5).
c. Tag and disconnect electrical wires from contact
terminals.
1) Main Boom:
Disconnect wires from
terminals 23 and 24.
2) Auxiliary Boom: Disconnect wires from
terminals 12 and 23. Remove 4700 ohm
resistor from terminals 12 and 24, and
retain for installation.
d. Loosen connector nut (6) and pull cable (11) out
of switch (10).
e. Remove link (7) and disconnect chain and
weight from switch (10).
f. Remove capscrews (8), switch (10) and lock pin
(9) from boom.
INSTALLATION:
1. INSTALL ANTI-TWO-BLOCK SWITCH (10).
a. Install lock pin (9) and switch (10) to boom with
capscrews (8).
14-17/(14-18 Blank)