TM-9-2320-328-13-P-1

HEMTT-BASED WATER TENDER (HEWATT)

TECHNICAL MANUAL; OPERATOR’S AND FIELD LEVEL MAINTENANCE MANUAL (INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST); PART 1 OF 3

MARCH 2009

TM-9-2320-328-13-P-1 - Page 493 of 1318

TM 9-2320-328-13&P-1

0063-17

DRAFT

0063

HWT2068

Step 21.

Check bumper turret pattern sleeve for blockage and debris.

If bumper turret pattern sleeve is not free from blockage and debris, remove

blockage and debris, and go to Step 22.

NOTE

Bumper turret pattern sleeve shifts from stream-to-fog/fog-to-stream positions with air

pressure.

Bumper turret pattern sleeve will shift from fog-to-stream at a slower rate as

system water pressure is increased.

Step 22.

While an assistant pushes bumper turret control pattern control switch (WP 0004),

check if bumper turret pattern sleeve shifts to stream and fog positions.

If bumper turret pattern sleeve does not shift to stream and fog positions, go

to Step 24.

Step 23.

While an assistant pushes bumper turret control pattern control switch (WP 0004),

check if bumper turret pattern sleeve shifts to stream and fog positions at a rate suitable

for system operations.

a.

If bumper turret pattern sleeve shifts at a rate suitable for system

operations, fault corrected.

b.

If bumper turret pattern sleeve does not shift at a suitable rate for

system operations, go to Step 38.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION