ENGINE
TM 5-3805-258-24-2
HEAD ASSEMBLY
DISASSEMBLY AND ASSEMBLY
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
Install unloader stop assembly (1). Tighten
to 175-225 lb. in. (202-260 kg.cm) torque.
Install unloader piston assembly (2), short
stem first.
Install unloader spring (8), small end first,
onto the long stem of the unloader piston
assembly (2).
Install unloader gasket (7) over the unloader
spring and rest it on the shoulder of the hole
in the unloader cavity.
Install valve seat (6) on top of the unloader
gasket, bevel side of valve seat up.
Install inlet valve (5) on valve seat.
Install inlet valve spring (4) on inlet valve.
Install inlet valve stop (3). Tighten to 840-
1080 lb. in. (970-1247 kg.cm) torque.
Install discharge valve spring (11).
Install discharge valve (10) on top of dis-
charge spring, and retain with valve seat (9),
Using a 9/ 16“ Allen wrench, tighten valve
seat (9) to 840-1080 lb. in. (970-1247 kg.cm)
torque.
5-18c
