TM 5-3895-379-23
TROUBLESHOOTING PROCEDURES - CONTINUED
0006 00
Table 1. Engine Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
6.
Engine Exhaust Smokes Excessively
(Black or Gray Smoke).
WARNING
Use caution while working under operator platform assembly. Fall-
ing platform may cause injury or death.
1. Check turbocharger impeller for 1. If impeller is restricted, remove
damage and restrictions. Raise
restriction. Install hose on
operator platform (WP 0128 00).
turbocharger and tighten clamp.
Loosen clamp and remove inlet
Lower operator platform (WP
hose from turbocharger. Inspect
impeller for cracks. Impeller
should spin freely. Measure 2. If turbocharger impeller is
cracked, does not spin freely or has
impeller shaft play. Acceptable
too much shaft play, replace
impeller shaft end play is 0.001-
turbocharger (WP 0035 00).
0.004 inches (0.03-0.10 mm).
Acceptable impeller shaft radial 3. If impeller is not damaged or
play is 0.003-0.006 inches (0.08-
restricted, install inlet hose on
0.15 mm).
turbocharger and tighten clamp.
Go to Step 2.
WARNING
DO NOT perform fuel system checks, inspections or maintenance
while smoking or near fire, flames or sparks. Fuel may ignite, caus-
ing injury or death, or damage to machine.
Operating personnel must wear fuel-resistant gloves when handling
fuels. If exposed to fuel, properly wash exposed skin and change
fuel-soaked clothing.
Fuel and oil are very slippery. Immediately wipe up any spills. Fail-
ure to follow this warning may cause injury.
NOTE
Cold start heater is used only when ambient temperatures are below
32F (0C). If cold start heater was not operated when malfunction
was noted, skip tests 2 through 5. Notify Direct Support Mainte-
nance.
