ARMY TM 9-6115-604-12
NAVY NAVFAC P-8-633-12
Position exhaust gasket (10) removed In step (1), above, over muffler roof opening. Position exhaust muffler
(9) flange over exhaust gasket (10) and muffler body over lower muffler band (7). Secure exhaust muffler (9)
to roof at the gasket area using mounting hardware (4, 5, and 6) removed In step (1), above.
Install upper muffler band (8) over exhaust muffler (9) and lower muffler band (7) Secure upper and lower
muffler bands (7 and 8) using attaching hardware removed in step (5), above
Loosen clamp (2) and rotate exhaust muffler elbow (3) to position the weather cap (1) facing upwards. Tighten
the clamp (2) and check weather cap (1) for proper functioning
Repeat steps (4) through (9), above, to Install the other muffler.
Load Circuit Breaker CB101 and Main Disconnect Switch S120 Load circuit breaker CB101 and main disconnect
switch S120 (Figure 4-6) are tied in series with the generator set output terminals and are equipped with a kirk-key
interlock provision used to disable operation of both devices when maintenance is being performed. During set
operation, the kirk-key Interlock prevents main disconnect switch S120 from being opened while load circuit breaker
CB101 is closed, and also prevents load circuit breaker CB101 from being racked whenever main disconnect switch
S120 Is opened.
The generator set Is shipped or transported with main disconnect switch S120 locked in CLOSED position and the kirk-
key interlock key Installed on load circuit breaker CB101 For shipping purposes, load circuit breaker CB101 is secured in
place with Integral shipping braces that must be removed and placed In storage position during set installation to allow
Locate shipping braces (1), Figure 4-6 holding both sides of load circuit breaker CB101 (8) to the cabinet
Remove two long inner screws holding the shipping braces on both sides of the load circuit breaker CB101 (8)
panel. Loosen the outer screws holding the shipping braces (1) to the cabinet frame enough so that the braces
are freely swinging downwards vertical with the frame. With braces (1) aligned downwards with the cabinet
frame, tighten screws on braces to prevent loss. Install and tighten the two long Inner screws on threaded
mounts (2) at rear of circuit breaker frame to prevent loss.
Locate racking handle (7) stowed at left side of load circuit breaker C8101 (8). With racking handle (7), turn
the racking crank (3) counterclockwise until load circuit breaker CB101 (8) moves as far out as rt will go.
Locate load circuit breaker CB101 kirk-key interlock (6). Turn the lock and remove the kirk-key interlock key.
Open main disconnect switch S120 compartment door (9) With interlock key removed from load circuit breaker
CB101, unlock the main disconnect switch kirk-key Interlock (5). Check main disconnect switch S120
operation by pulling switch handle (4) downwards to OPEN position Restore switch handle (4) upwards to
CLOSED position Lock the main disconnect switch kirk-key Interlock (5) and remove key Close switch
compartment door (9)
Restore kirk-key Interlock key in load circuit breaker CB101 kirk-key interlock (6) and unlock. With racking
handle (7), turn racking crank (3) clockwise until load circuit breaker CB101 (8) is all the way in. Remove
racking handle (7) and restore In storage position at left of load circuit breaker CB101 (8)