TM 9-6115-604-34
NAVFAC P-8-633-34
2-17. LOAD CIRCUIT BREAKER CB1O1 REMOVAL AND INSTALLATION. Special tools are required to accomplish
load circuit breaker CB101 removal or installation. These tools (crank or ramps) are supplied with the generator set. See
Figure 2-15 for their locations.
NOTE
Load circuit breaker CB101 removal or installation will require two or more persons.
a.
Remove. This procedure requires use of a forklift with tongs a minimum 42 inches (1067 mm) in length, 4 inches
(107 mm) in width, and 1.50 inches (38 mm) thick.
(1)
Remove the ramps from the generator compartment as follows:
(a) Open access doors as required.
(b) See Figure 2-15, detail A, and remove screws, lockwashers, and channels to remove ramps.
(2)
See Figure 2-15, details B and C. Open control room door and cabinet B bottom compartment. Remove
lip flange at base of cabinet B by removing screws, bevel washers and nuts to gain access to ramp
alignment pins.
(3)
Hook the end of each ramp removed in step (1), above, on alignment pins at base of cabinet B. Note that
the ramps when installed will be lying on the floor angled slightly towards the left side of the control room
door.
(4)
Remove racking handle from storage at left side of load circuit breaker CB1 01 and attach to racking crank
on circuit breaker panel. With racking handle, turn racking crank counterclockwise until load circuit breaker
CB1 01 moves as far outwards as it will go. Then remove racking handle and restore to storage position at
left of circuit breaker compartment.
(5)
See Figure 2-15, detail B. Locate Kirk-key interlock at lower right side of circuit breaker compartment.
Turn the load circuit breaker Kirk-key interlock and remove key.
(6)
See Figure 2-15, detail C. With Kirk-key interlock key removed in step (5), above, unlock the main
disconnect switch S120 Kirk-key interlock. Pull main disconnect switch S120 handle downwards to OPEN
position.
(7)
Adjust forklift tongs until they are approximately 8 inches (203 mm) apart at the center. Maneuver forklift
until tongs are halfway inside the control room, in between and parallel with the load circuit breaker ramp
channels. Adjust forklift tongs until they are flush against the control room floor and centered between the
two ramp channels. Position piece of plywood or similar buffer material on forklift tongs to prevent
damage to load circuit breaker CB1 01 underside when lifting.
(8)
Locate release latch at bottom right side of load circuit breaker CB101. Pull latch upwards and slightly lift
circuit breaker front and pull out of cabinet until front circuit breaker rollers are engaged on the ramp
channels. Roll load circuit breaker CB101 out of cabinet and onto ramps. Slightly lift rear end to allow rear
circuit breaker rollers to engage the ramp channels. Two persons are required to roll the load circuit
breaker CB101 assembly out of the cabinet (9) Roll load circuit breaker CB101 on ramp channels into
position above forklift tongs. Maneuver forklift, if needed, to ensure load circuit breaker CB101 underside
is fully supported. Slightly lift load circuit breaker CB011 and secure to the forklift tongs.
CAUTION
Do not tilt forklift tongs backwards when removing load circuit breaker CB101 as this may
cause damage.
(10)
Carefully remove load circuit breaker CB1 01 from the generator set.
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