TM 5-3810-207-20/TO 36C23-3-37-12
Section VI. CRANE ENGINE LUBRICATION SYSTEM
112. General
The internal parts of the engine are pressure-
lubricated. The oil is forced by a pump from the
crankcase to the two oil filters, through the oil cooler,
and back to the crankcase. The oil filters are equipped
with replaceable elements.
113. Oil Filters
a.
Removal. Remove the oil filter as instructed on
figure 46.
b.
Cleaning. Inspection, and Repair.
(1)
Clean all parts with an approved cleaning
solvent.
(2)
Inspect all lines and fittings for damage.
Replace defective lines and fittings.
(3)
Inspect the oil filter bodies and mountings
for dents, breaks, and other damage.
Repair or replace all defective parts.
(4)
Replace filter elements and gaskets.
c.
Installation.
(1)
Install the oil filter as illustrated on figure
46.
(2)
Service the oil filters (TM 5-3810207-10).
114. Crankcase Filler and Breather
a.
Removal. Remove the crankcase filler and
breather as instructed on figure 46.
b.
Cleaning and Inspection.
(1)
Clean all parts with an approved cleaning
solvent.
(2)
Inspect all parts for breaks, cracks, and
other damage. Replace all defective
parts.
c.
Installation. Install the crankcase filler and
breather as illustrated on figure 46.
115. Pressure Relief Valve
a.
Removal. Remove the pressure relief valve as
illustrated on figure 47.
b.
Cleaning and Inspection.
(1)
Clean all parts with an approved cleaning
solvent.
(2)
Inspect all parts for excessive wear,
breaks, and other damage. Replace all
defective parts.
c.
Adjustment. Adjust the pressure relief valve by
installing the correct number of shims in plunger to
obtain the correct spring tension to regulate the
operating oil pressure to 40-50 pounds. Add shims to
increase pressure; remove shims to decrease pressure.
d.
Installation. Install the pressure relief valve as
illustrated on figure 47.
116. Oil Cooler
a.
Removal.
(1)
Drain the lubricating system (TM 5-3810-
207-10).
(2)
Remove the oil cooler as instructed on
figure 48.
b.
Cleaning and Inspection.
(1)
Clean all parts with an approved cleaning
solvent.
(2)
Inspect the valve for proper operation.
Replace defective valve.
(3)
Inspect the oil cooler for bent fins, holes,
cracks, and other damage. Replace
defective oil cooler.
(4)
Inspect lines, fittings, and mounting
hardware for bends, breaks, and other
damage. Replace defective lines, fittings,
and mounting hardware.
c.
Installation.
(1)
Install the oil cooler as illustrated on figure
48.
(2)
Fill the lubricating system (LO 5-3810-
207-20).
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