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TM 5-4210-220-12
4-15. AUXILIARY POWER UNIT - Continued
4-15 12 Engine Lubrication System
This task covers
a.
Test
b.
Repair
TOOLS
Shop Equipment, Automotive
Maintenance Repair,
NSN 4910-00-754-0705
EQUIPMENT CONDITION
APU Shutdown (see para. 2-12)
APU may be mounted in truck
except where indicated
TEST
(1)
Remove pipe plug directly above oil filter
element cap.
(2)
Connect 0 - 100 psi (0 - 1000 kPa) gage
to oil pressure port.
(3)
Start engine and note oil pressure. Low
idle 20-30 psi (140 - 200 kPa) High Idle
50-65 psi (340 - 450 kPa).
(4)
If pressure is low, replace filter, or relief
valve, or oil pump. If pressure is high,
remove and inspect relief valve.
(5)
When repair is complete, remove test
gage and install pipe plug.
REPAIR .
a.
Engine Oil Filter Repair.
NOTE
The engine oil fitter can be cleaned
or replaced.
(1)
Remove oil filter plug (4).
(2)
Extract spring (2) and filter element (1)
from block.
(3)
Clean, and if necessary replace oil filter.
(4)
Slide filter (1) into block followed by
spring (2).
(5)
Check seal ring (3) on plug (4). If
damaged, replace.
(6)
Install plug in engine block and tighten
4-184
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