TM 5-3895-363-13&P
10.4.4.3
Check chrome on outer ring surface, if
badly worn, replace.
10.4.4.4
Reassemble after checking inner cylind-
er end ring and rubber ring.
10.4.5
INNER CYLINDER END RING
(item 3 page 35).
10.451
Check clearance per 10.2.1, if in excess
of 0.050", replace.
10.4.4.2
Remove and install new inner cylinder
end ring per procedure detailed in
10.3.12 through 10.3.16.
10.4.6
RUBBER RING (item 4 page 35).
10.4.6.1
Check both halves to see if rubber has at
least 1/2 of it’s original surface, if not,
replace.
10.4.6.2
Lift outer end ring (item 2 page 35) up
over the impact block after the inner cy-
linder end ring has been removed.
10.4.6.3
Turn end ring over so that rubber ring is
up and pry out of end ring cavity with
screw driver.
10.4.6.4
Grease rubber ring and set wide side
down into cavity of end ring and drive
into same with hammer.
10.4.7
PISTON (item 3 page 33).
10.4.7.1
Place checker about piston at two points
and hold up as the piston is slid out the
top of the lower cylinder.
10.4.7.2
Remove piston rings (item 2 page 39)
and catch ring (item 3 page 39) using
piston ring pliers (see 10.3.17).
10.4.7.3
Check ring gap per 10.4.4.2, replace as
needed.
10.4.7.4
Check chrome surface per 10.4.4.3, re-
place as needed.
10.4.7.5
Reassemble in reverse order using pis-
ton ring installing band to compress
rings.
10.4.8
LOWER CYLINDER (item 1 page 33).
10.4.8.1
The lower cylinder is in it’s disassembled
state after removal of upper cylinder
(see 10.4.2), impact block (see 10.4.3),
and piston (10.4.7).
10.4.8.2
The bore diameter as manufactured is
11.811" plus 0.008", this measurement
should be checked at the area where the
rings of the impact block and piston ride
during combustion. The maximum bore
allowed is 11.851" with a maximum out
of round tolerance of 0.0l0", readings in
excess require replacement of lower
cylinder.
10.4.9
FUEL PUMP (item 6 page 33).
10.4.9.1
Remove 6 ea. lock nuts (item 11 page 35)
and disconnect 2 ea. fuel lines (item 7
page 33) from fuel pump.
10.4.9.2
Lift pump off pump studs and perform
testing and repair per section 11.
10.4.9.3
Reassemble pump on lower cylinder,
torque nuts to a minimum of 32 ft.-lb.
Hook up fuel lines, tighten snugly only.
10.4.10
TRIPPING DEVICE (item 5 page 33).
10.4.10.1 Remove 4 ea. locking screws (item 13
page 41) with spring plate (item 11 page
41) and leaf spring (item 12 page 41),
replace leaf spring if bent.
10.4.10.2 Drive out roll pins (item 15 and 16 page
41) connecting cam to lever (item 7 page
41), replace if broken.
10.4.10.3 Drive out lever from cam (item 7 page
41) and trip body (item 1 page 41), re-
place if shaft is bent.
10.4.10.4 Pull cam out of body and remove 2 ea.
joint pins (items 5 page 41) from 2 ea.
lugs (item 6 page 41). If pins are bent or
lugs are stretched, replace.
10.4.10.5 Remove circlip (item 18 page 41) from
pawl pin (item 4 page 41).
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