TM 5-4310-370-14
(6) Remove hand hole plat e (figure 5-9, item 10) and then hand hole plate gasket (figure 5-9, item 11) by
turning four hex cap screws (figure 5-9, item 12) counter clockwise.
(7) Remove three connecting rod assemblies (figure 5-9, item 13) by turning six connecting rod hex cap screws
(8) Remove oil scoop retainer (figure 5-9, item 15) and the left hand oil scoop (figure 5-9, item 16), the center
dipper pin (figure 5-9, item 17).
5-5. CRANKCASE DISASSEMBLY
a. Remove four hex cap screws (figure 5-10, item 1) by turning them counter clockwise.
b. Then remove in sequence, the breather chamber, (figure 5-10, item 2) the breather element, (figure 5-10, item 3),
the crankcase cover (figure 5-10, item 4). Then remove the crankcase cover gasket (figure 5-10, item 5) and any
crankcase cover shims, remove oil separator (figure 5-10, item 12).
c. Before removing crankshaft, remove any sharp edges on keyway with a fine file or stone, to avoid damaging oil
seal during removal.
d. Remove crank shaft (figure 5-10, item 8) from crankcase (figure 5-10, item 7) and disassemble by removing both
main bearing cup assemblies (figure 5-10, item 9).
e. Remove oil seal if it leaks (figure 5-10, item 10).
f. Replace visible sight oil gage only if it leaks or is damaged (figure 5-10, item 11).
5-6. CLEANING, INSPECTION, REPAIR OR REPLACEMENT OF PARTS.
WARNING
Dry cleaning solvent, P-D-680, used to clean parts is potentially dangerous to
personnel and property. Use in a well ventilated area as the fumes are dangerous
if inhaled. Avoid repeated and prolonged skin contact. Do not use near open
o
o
o
o
flame or excessive heat. Flash point of solvent is 100 F 138 F. (38 C 59 C).
a. All parts are to be thoroughly cleaned with P-D-680 solvent, and then air dried.
b. Inspect all parts for cracks, breaks, fissures, scores, distortions or any other applicable damage.
c. Inspect all parts for serviceable tolerances. (See table 5-2)
d. Repair or replace any unserviceable parts. Also coat all internal moving parts with oil.
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