TM 9-3431-254-14&P
SPECIAL FEATURE
Rocker arm assembly can be left bolted to the cylin-
der head, unless head or rocker arms need replacing.
individual cylinder heads, barrels, pistons and rings
con be removed for replacement without a major en-
gine disassembly, by means of a special piston sleeve.
Turn crankshaft over until piston, in the cylinder
Refer to Fig's. B-40, B-42, B-43 and
barrel that is to be replaced, is at the top of its
Cylinder Head, Cylinder Barrel paragraphs.
stroke. Remove; top cylinder stud (flanged) on Model
V-461D, or hold down clip as used on Model V-465D.
The remaining studs can be disassembled after cylin-
Remove rocker arm cover by means of a screw driver
der is taken off.
wedged under the bail wire. Take off the 4 nuts and
in reassembly; place a new gasket at bottom of cylin-
washers from cylinder barrel studs. Lift cylinder
der barrel. It will be necessary to compress the piston
head and rocker arm assembly off cylinder. The oil
rings in order to slip the cylinder over the piston, as
drain line will slip out of adapter in crankcase. Pull
shown in Fig. B-43. A piston sleeve can be made from
the lower portion of a scrap cylinder. The sleeve is
In reassembly; place a new 'O' ring under collar of
2 inches long with a 7/8 inch wide slot. The inside
push rod housing. Press collar end of tube into tap
diameter is tapered from the middle to the bottom;
pet hole by hand; do not drive tubes in place with a
3.750" to 4.000 for V-465D
hammer. Use new `O' ring for push rod housing to re-
3.500" to 3.750 for V-461D, V-460D
cess in cylinder head. Spread a light film of grease
on cylinder head gasket so it will stick in plats dur-
ing reassembly. Place new `O' ring on oil drain tube.
Note: When reassembling cylinder heads on a com-
plete overhaul, it will be necessary to square up the
inlet and exhaust port flanges with those of the mani-
fold. see Fig. B-41. Place a parallel steel bar across
the ports and tap the heads lightly with a rubber mal-
let to rotate them until they are square. Turn cylinder
head nuts to a snug fit and re-check alignment.
Torque cylinder head nuts alternately and in 3 steps.
First 8, then 15, and finally 20 foot pounds torque.
277794C
277795C
B-28