TM 5-3805-291-23-1
TROUBLESHOOTING WITHOUT A DIAGNOSTIC CODE - CONTINUED
0008 00
Table 1. Engine Troubleshooting - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
C AU T I O N
10. Low Engine Oil Pressure.
Do not operate engine with low oil pressure. Engine damage will result.
If measured oil pressure is low, discontinue engine operation until prob-
lem is corrected. Failure to comply with this caution may result in dam-
age to equipment.
1. Inspect engine oil level (TM 5-3805-
If necessary, add oil (TM 5-3805-291-10).
291-10).
2. Perform Engine Oil Pressure Test (WP 1. Change engine oil and filters (WP 0025
00).
2. If problem still exists, go to Test 3.
3. Check for presence of fuel in oil. Refer 1. Change engine oil and filters (WP 0025
to Malfunction 26, Fuel Dilution of Oil.
00).
2. If problem still exists, go to Test 4.
4. Check engine oil cooler for
Clean or replace engine oil cooler (WP
5. Inspect engine oil bypass valves (WP
1. Replace or clean engine oil bypass
2. If problem still exists, go to Test 6.
6. Inspect engine oil pump for excessive
1. Remove any material from oil suction
wear and check oil suction tube for
tube. If damaged, replace oil pump
build-up that restricts oil flow, cracks,
(WP 0182 00).
or a damaged O-ring seal (WP 0182
2. If problem still exists, replace engine
00).
(WP 0171 00).
1. Check restriction indicator on air
1. If restriction is indicated, clean or
11. Excessive Black Smoke.
cleaner (TM 5-3805-291-10).
replace air cleaner elements (WP 0030
00), remove any blockages or
restrictions, and replace damaged air
2. If problem still exists, go to Test 2.
2. Perform Fuel Quality Test (WP 0011
If problem still exists, go to Test 3.
00).
3. Check atmospheric pressure sensor for 1. Clean atmospheric pressure sensor.
dirt/debris and correct reading (WP
Correct reading is between 7.25 to 145
psi (50 to 100 kPa). If faulty, replace
atmospheric pressure sensor (WP 0073
00).
2. If problem still exists, go to Test 4.
4. Inspect turbocharger, drain, wastegate, 1. If necessary, replace turbocharger (WP
restricted drain.
2. If problem still exists, go to Test 5.
