TM 5-3895-379-23
TROUBLESHOOTING PROCEDURES - CONTINUED
0006 00
Table 1. Engine Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Engine Exhaust Smokes Excessively 1. Check cold start heater operation. 1. If cold start heater and area of
6.
Turn battery disconnect switch,
intake manifold around cold start
(Black or Gray Smoke) - Continued.
engine start switch, and starting
heater are warm, turn battery
aid switch to ON positions for not
disconnect switch to OFF position.
more than 20 seconds. Turn
engine start switch and starting 2. If cold start heater and area of
intake manifold around cold start
aid switch to OFF position. Check
heater are not warm, turn battery
cold start heater and area of intake
disconnect switch to OFF position.
manifold around cold start heater
Go to Step 3.
for warmth.
2. Check electrical input to cold 1. If 12 to 14 Vdc are not measured
start heater. Have assistant turn
at wire 377-OR, turn battery
engine start switch and starting
disconnect switch and engine start
aid switch to ON positions (TM
switch to OFF position (TM 5-
5-3895-379-10). Touch positive
3895-379-10). Go to Electrical
(+) probe of multimeter to wire
Malfunction No. 6, Starting Aid
377-OR and the negative (-)
Switch Does Not Work.
probe of the multimeter to engine
block.
2. If more than 14 Vdc are measured
at wire 377-OR, starting aid
resistor and cold start heater are
damaged. Turn battery disconnect
switch and engine start switch to
OFF position (TM 5-3895-379-
10). Replace cold start heater (WP
3. If 12 to 14 Vdc are measured at
wire 377-OR, go to Step 4.
WIRE 377-OR
COLD START
FUEL LINE
HEATER
401-178
0006 00-19
