TM-9-2320-387-24-1
TRUCK, UTILITY: S250 SHELTER CARRIER, 4X4, M1113
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE, VOLUME 1
DECEMBER 1997
CHANGE 1
TM-9-2320-387-24-1 - Page 113 of 1205
REFERENCE
INFORMATION
TM 9-2320-387-24-l
STARTABILITY
0
11
. .
WARNING
A hot engine may cause serious
burns. Always use caution when
approaching
a hot engine.
NOTE
When using the vehicle’s
temperature
gauge to determine
engine temperature,
don’t forget to
turn the rotary switch to RUN. The
gauges don’t work when
power
is off.
The colder the engine (and air temperature),
the more you need the glowplugs for starting.
There are some times when you don’t need to
run the glow plugs test.
If the engine is warm
and the problem is there on a hot day, then
the problem is probably NOT the glow plugs
or cold start advance,
and these tests may
be bypassed.
If its colder than 50°F, run
the glow plugs circuit test, because just a few bad
glow plugs can make a minor starting problem
much worse.
If the vehicle passes the STUICE-R
compression
unbalance test, it may still
have a compression
problem, but it would
mean that every cylinder has low
compression.
This is possible, but not too
likely.
If you’re confident that
everything
else is working properly,
notify DS maintenance
(chapter 14).
COMPRESSION
UNBALANCE
STEKE-R
TEST 14
1. Run tests 72. 73. and 74 to verify that the
batteries are OK.
CAUTION
THE GLOW PLUGS CONTROLLER
AND
THE CONTROL
VALVE ELECTRICAL
CONNECTOR
MUST BE DISCONNECTED
PRIOR TO RUNNING
THIS TEST.
2. Disconnect wire 54A at injection pump to
prevent starting.
3. Disconnect
glow plugs controller and control
valve electrical connector
(to keep waveform
clean).
4. Start Test 14. compression
unbalance.
5. Wait for the GO message. Crank the engine.
6. Release the rotary switch when the VTM
displays OFF. A number less than 25%
is passing.
GLOW PLUG
CONTROLLER HARNESS
TIME-DELAY
MODULE
TIME-DELAY MODULE
LECTRICAL CONNECT0
NO
STEP
2-49/(2-50
blank)
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