Quantcast Figure 4-3. Pressure Relief Valve Shims.

 

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Figure 4-2. Typical Oil Pump Test Setup.
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TM-9-2815-210-34-2-2 Engine Assembly Diesel (MULTIFUEL): Naturally Asspirated or Turbocharged Fuel-Injected Water-Cooled 6-Cylider Manual
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OIL PRESSURE REGULATOR VALVE HOUSING ASSEMBLY. - TM-9-2815-210-34-2-20217
TM 9-2815-210-34-2-2
(d) Slowly close restrictor valve while watching pressure gage and
p r e s s u r e relief valve hole in pump.  Check that oil starts to squirt out of pressure
r e l i e f valve hole when pressure gage reads between 140 and 225 pounds per square
inch.
( e ) If oil does not start
to squirt out of pressure relief valve hole when
p r e s s u r e gage reads between 140 and
225 psi, stop test. Take apart pressure relief
v a l v e . Refer to para 4-17a, frame 4.
Add or take out shims shown in figure 4-3 to
change relief valve opening pressure.
Do steps (c) and (d) again.
Pressure Relief Valve Shims.
(2) Flow test.
NOTE
P r e s s u r e relief adjustment must be done before
f l o w test.  Refer to para 4-17e (1).
O i l pump has two halves. Front half of pump
b e h i n d drive shaft is called pressure pump.
R e a r half of pump is called scavenge pump.
( a ) If scavenge pump has not already been oiled, pour some engine
l u b r i c a t i n g oil into scavenge pump so scavenge pump impellers will not be damaged
d u r i n g test.
( b ) Hook oil pump to test bench as shown in figure 4-2.
( c ) Open pressure restrictor valve. Start drive unit, Run pump until
air is out of system and oil temperature holds steady at 200F to 210F for all engines
e x c e p t LDS-465-2 and 220F to 240F for engine LDS-465-2.
( d ) Work drive unit to speed up oil pump to 3,420 rpm. Slowly close
r e s t r i c t o r valve until pressure gage reads 110 psi.
( e ) For all engines except LDS-465-2, check that flow meter reads
2 2 gallons per minute (gpm) or more.  If flow meter reads less than 22 gpm, get a
new oil pump.
( f ) For engine LDS-465-2, check that flow meter reads 26 gpm or more.
If flow meter reads less than 26 gpm, get a new oil pump.

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