ENGINE, EXHAUST AND COOLING SYSTEM TROUBLESHOOTING PROCEDURES - CONTINUED
TEST OR INSPECTION
13. Excessive Oil
Hot oil or metal parts can cause severe burns. Wear insulated gloves, long
sleeves and eye protection when working with heated parts. Failure to follow
this warning may cause injury.
Check oil level gage for overfilling.
1. If oil level gage indicates excessive oil,
2. If oil level is OK, go to Test 2.
Check for external oil leaks.
a. Wipe off edges of valve cover, oil
pan, oil filter, turbocharger, engine
oil cooler and other external engine
b. Start engine and check for leaks.
1. Tighten nuts, screws, lines and fittings,
and oil filter.
2. If no leaks are found, go to Test 3.
Check engine oil temperature (TM 5-
1. If temperature is too high, replace oil
cooler (WP 0269 00).
2. If oil temperature is normal, go to Test 4.
Check for oil leakage at turbocharger
1. If leakage is noted, replace turbocharger
to inlet manifold connection.
(WP 0276 00).
2. If no leaks are found, go to Test 5.
1. Replace rocker shaft if plug(s) missing
Check for excessive oil and missing
(WP 0349 00).
plugs in each end of rocker shaft (WP
2. If problem still exists, replace engine
assembly (WP 0257 00).