TM 9-2350-256-20
CHAPTER 2: VEHICLE MAINTENANCE INSTRUCTIONS
2 - 1 6 . 1 M E C H A N I C A L T R O U B L E S H O O T I N G - C o n t i n u e d
D R I V E R ’ S C O N T R O L S - C o n t i n u e d
L
Disconnect fuel line from OUT side of purge pump.
Place a container under purge pump. Turn MASTER
switch to on position and operate purge pump. If
purge pump cannot be operated or excessive
pressure is required to operate purge pump, replace
purge pump (see paragraph 4-9).
To prevent injury to personnel or damage to
equipment, chock vehicle (see paragraph
17-9).
M Place transmission shift lever in neutral position.
Turn MASTER switch and fuel pump switches to
ON position, press starter button and preheat button
located on purge pump handle. If purge pump
operates with no excessive pressure, replace main
engine fuel check valve (see paragraph 4-13).
T R A C K S A N D S U S P E N S I O N
SYMPTOMS
Vehicle pulls to one side. (This
condition is normal on a crowned
road. The vehicle will pull to the
low side of the road.)
Do steps B through E.
vehicle throws track.
Do steps A through C.
Vehicle sags to one side.
Do steps B, C, and E.
Vehicle rides excessively hard.
Do steps E and G.
Thumping noises heard during
vehicle operation.
Do steps H and I.
Excessive noise in track or
suspension during vehicle
operation.
Do steps A through C and F.
A
Inspect tracks for foreign material lodged in track or
between roadwheels and support rollers. Remove
foreign material from tracks, roadwheels, and
support rollers.
B Inspect tracks for damaged end connectors and
center guides. Inspect track shoes for separation of
rubber from metal tubes, inspect track for dead track
shoes and for shoes with chunked rubber or rubber
worn down to metal tubes. Replace worn, missing,
or damaged parts (refer to TM 9-2350-256-10).
C
Check track tension and adjust if necessary (refer to
TM 9-2350-256-10).
2-40.14 Change 1
