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PUMP AND PLUMBING BLOW-OUT PROCEDURES - Continued
PUMP AND PLUMBING BLOW-OUT PROCEDURES - Continued

Maintenance Manual For Tactical Fire Fighting Truck (Tfft) Model M1142 - 1 Page Navigation
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DRAFT
TM 5-4210-249-13&P-1
0044
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TFFT02168P
35. Let pressure build up to 50 psi (345 kPa) on pump PRESSURE gauge (18). Put PUMP COOLER switch (31)
in open position. Indicator light (32) will illuminate.
36. Let pressure drop to zero. Put PUMP COOLER switch (31) in closed position. Check that indicator light (32)
goes out.
TFFT00715P
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WARNING
ICON 66
Driver side pre-connect A and B hoses must be disconnected prior to performing
blow-out procedure. Hoses may become pressurized causing injury to personnel
and/or damage to equipment.
37. Let pressure build up to 50 psi (345 kPa) on PUMP DISCHARGE gauge (13). Put DRIVER SIDE
PRE-CONNECT A (33) valve control in OPEN position. Indicator light (34) will illuminate.
38. Let pressure drop to zero. Put DRIVER SIDE PRE-CONNECT A (33) in CLOSED position. Indicator
light (35) will illuminate.
39. Repeat Steps (37) and (38).
40. Repeat Steps (37) through (39) for DRIVER SIDE PRE-CONNECT B.
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