TM 5-4310-452-14
5-7. CYLINDER HEAD MAINTENANCE.
This Task Covers:
a.
Removal
c.
Assembly
b.
Disassembly
d.
Installation
Initial Setup:
Equipment Conditions:
Tools/Test Equipment:
• Engine off.
• General mechanic's tool kit
• Battery cables disconnected (see paragraph
• Cylinder head stand (003-0562)
4-57).
• Exhaust manifold removed (see paragraph 4-14).
• Intake manifold removed (see paragraph 4-15).
• Cowling, duct, guide rail, shield, and plates
removed (see paragraph 4-34).
• Fuel injector removed from cylinder head to be
removed (see paragraph 5-19).
a.
REMOVAL
NOTE
Use this task to remove anyone of four cylinder heads. No. 1 cylinder head is shown.
1.
Remove valve cover (see paragraph 4-12).
2.
Remove valve train mechanism (see paragraph 5-13).
3.
Remove 2 screw plugs (4) and washers (3) from cylinder head (8).
NOTE
Loosen 4 capscrews 1/2-turn at a time, moving diagonally from one to the other.
4.
Remove 4 capscrews (6) and washers (7) from cylinder head (8). Remove cylinder head and spacer ring (9).
b.
DISASSEMBLY
1.
Press down on spring retainer (1) and remove valve cone halves (2).
2.
Remove spring retainer (1), gasket (19), spring (18), and rotor (17) from cylinder head (8).
3.
Remove retaining ring (16) and inlet valve (12) from cylinder head (8).
4.
Repeat steps 1 and 2, and remove exhaust valve (11) from cylinder head (8).
5.
Remove stud (14) and 3 studs (5).
6.
Mount cylinder head (8) on cylinder head stand and remove valve seats (10 and 13).
NOTE
Remove valve guides out toward top of cylinder head.
7. Remove 2 valve guides (15) from cylinder head (8).
5-18
