TM 5-4310-343-35
gasket (10) to allow proper discharge valve travel.
Peel the gasket to required thickness assuring a smooth leaded
surface on both sides with no brass showing. Install the gasket, stop valve (2) and lock screw (1) in place and torque to
150 pound-inches.
(n) Secure the second stage assembly with two clamps, part number 255066 or equivalent, and two
screws (9, figure 6-6) and lockwashers (10). Torque screws to 10 pound-inches.
(o) Install second stage assembly (8, figure 6-6) to crankcase (43) with four screws (9) and lockwashers
(10).
(p) Remove clamps installed in step (n) and replace screws (9) and lockwashers (10). Torque the six
screws (9) to 40 pound-inches using torque adapter, part number 257002 or equivalent.
(q) Refer to table 5-1 and figure 6-9 and assemble the third stage as follows: Rotate the crankcase 180
ccw from the second stage assembly position to bring the third stage up into position. Refer to "head installation" in figure
5-5 and assemble the valve plate (6), gasket (7), seal plate (8) and the cylinder head (16). Use fixture No. 256996 or
equivalent to press the valve plate into the head. Refer to figure 5-5 and calculate the thickness of shim (16, figure 6-6) to
establish proper head clearance. Peel the shim to required thickness. Install the preformed packing (17, figure 6-6) and
shim (16).
(r) Install the intake valve (5, figure 6-9) with lapped face against the valve seat in the valve plate (6).
Position the spring (4) with legs down against valve. Place the head assembly with intake valve and spring in place over
the head of the cylinder (2) and gasket (3). Orient intake and discharge ports parallel to the crankshaft with discharge port
in rear. Insert plunger (1) and secure assembly with two clamps, part number 255066 or equivalent,
5-47
