TM 5-4310-452-14
5-13. VALVE TRAIN MECHANISM MAINTENANCE.
This Task Covers:
a.
Removal
c.
Assembly
b.
Disassembly
d.
Installation
Initial Setup:
Equipment Conditions:
Materials/Parts:
• Engine off.
• Two lockwashers
•· Left and right door assemblies open.
• Two preformed packings
• Battery cables disconnected (see paragraph 4-57).
Tools/Test Equipment:
• General mechanic's tool kit
a. REMOVAL
NOTE
Use this task to remove any 1 of 4
valve train mechanisms. No. 1 valve
train location is shown.
1.
Remove valve cover (see paragraph 4-12).
2.
Remove 3 nuts (7) from rocker arm bracket (8) and
cylinder head studs (16).
3.
Remove rocker arm bracket (8) from cylinder head
(15).
b.
DISASSEMBLY
1.
Remove 2 nuts (24), lockwashers (23), and washers
(22) from rocker arm bracket (8). Discard
lockwashers.
2.
Remove 2 rocker arms (4) and shafts (5) from
rocker arm bracket (8).
3.
Inspect 2 studs (6) in rocker arm bracket (8) for
cracks, bends, or stripped threads. Replace studs if
necessary.
4.
Remove 2 bushings (21) from rocker arms (4).
5.
Remove 2 nuts (3), adjusting screws (19), and thrust
pads (20) from rocker arms (4).
6.
Remove 2 nuts (2) and oil nozzles (1) from rocker
arms (4).
5-32
