c. Installation. Install the breather as illustrated on
161. Oil Filter
a. Removal.
(1) Remove engine access panel.
(2) Remove the drain plug and allow the oil to
drain from the filter.
(3) Remove the filter as illustrated on figure
b. Cleaning, Inspection, and Repair.
(1) Clean all parts with an approved
cleaning solvent and dry thoroughly.
(2) Inspect all parts for dents, fractures, and
other damages.
(3) Repair or replace all damaged parts as
Figure 93. Oil pressure relief valve, exploded view.
necessary. Note. If the filter cover is
removed, for any reason, the gasket must
be replaced.
the oil pressure relief valve as illustrated in figure 93.
c. Installation.
b. Cleaning and Inspection.
(1) Install the oil filter as illustrated on figure
(1) Clean all parts with an approved cleaning
solvent.
(2) Install the drain plug in the filter base.
(2) Inspect all parts for excessive wear,
(3) Fill crankcase to proper operating level
breaks, and other damage.
(LO 53810-227-15).
(4) Start the engine and check the filters for
c. Adjustment. Adjust the pressure relief valve by
leaks.
installing the correct number of washers to obtain the
(5) Install the engine access panel.
correct spring tension to regulate the operating oil
pressure to 40-50 pounds. Add washers to increase
162. Oil Pressure Relief Valve
pressure; remove washers to decrease pressure.
a. Removal and Installation. Remove and install
Section XIII. CRANE ENGINE LUBRICATION SYSTEM
163. General
(1) Clean all parts with an approved cleaning
solvent.
The internal parts of the engine are pressure-
(2) Inspect all lines and fittings for damage.
lubricated. The oil is forced by a pump from the
Replace defective lines and fittings.
crankcase to the two oil filters, through the oil cooler,
(3) Inspect the oil filter bodies and mountings
and back to the crankcase. The oil filters are equipped
for dents, breaks, and other damage.
with replaceable elements.
Repair or replace all defective parts.
(4) Replace filter elements and gaskets.
164. Oil Filters
c. Installation.
a. Removal. Remove the oil filter as instructed on
(1) Install the oil filter as illustrated on figure
b. Cleaning, Inspection, and Repair.
AGO 6819A
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