TM-9-2815-210-34-2-2

ENGINE ASSEMBLY, DIESEL (MULTIFUEL): NATURALLY ASPIRATED OR TURBOCHARGED, FUEL-INJECTED, WATER-COOLED, 6-CYLINDER

TECHNICAL MANUAL; TROUBLESHOOTING; DIRECT SUPPORT AND GENERAL SUPPORT LEVEL; VOLUME 2 OF 2; PART 2 OF 2

APRIL 1981

TM-9-2815-210-34-2-2 - Page 214 of 968

TM 9-2815-210-34-2-2

e .

Adjustment and Test.

(1) Pressure relief valve adjustment.

NOTE

Oil pump has two halves. Front half of pump

behind drive shaft is called pressure pump.

Pressure pump pumps oil from deep sump of

engine oil pan to engine main oil gallery.

Rear half of pump is called scavenge pump.

Scavenge pump pumps oil from shallow sump

in engine oil pan to deep sump in engine oil

pan.

(a) Pour some engine lubricating oil into scavenge pump so scavenge

pump impellers will not be damaged during test.

(b) Hook oil pump to test bench as shown in figure 4-2. Join oil inlet

hose and oil outlet hose to pressure half of pump.

Check that you can see pressure

relief valve hole in pump.

turn pump at 1,000 to 2,000 rpm.

Figure 4-2.

Typical Oil Pump Test Setup.

(c) Open pressure restrictor valve all the way.

Set drive unit to

4-195