Page 114
REPAIR INSTRUCTIONS, PART 1
Rocker Arm Shaft and Engine Brake
Removal
[213 LP]
On engines fitted with the engine brake, use
rubber bands or tie straps to contain the pistons
within the rockers. The match between these
pistons and their rockers must be maintained.
The order of rocker arm assembly must be
maintained. Make certain the sets of three are
kept together. Make certain the rocker arms are
identified so they can be returned to their original
positions on the shaft. Failure to heed this caution
may result in severe engine damage.
1. Remove the engine brake control valve (if so
equipped) from the engine.
111
Figure 111 — Engine Brake Control Valve
On engines without the engine brake, an oil flow
adapter is used in place of the engine brake
control valve. The adapter is mounted in the
same location on the cylinder head and provides
oil to the rocker arm shaft.
2. If equipped with an engine brake, secure the
pistons in the exhaust rocker arms using
rubber bands or tie straps to prevent piston
damage.
112
Figure 112 — Tie Strap Holding Engine Brake Piston
Pistons and rocker arms are matched together
and should not be mixed.
3. Beginning at the center camshaft bearing
cap, loosen the fasteners at each bearing
cap evenly in stages until all fasteners are
completely loose. Once loosened, remove
the fasteners.
1. Control Valve Assembly
2. Mounting Plate Attaching
Screws
3. Mounting Plate
4. Oil Seal
5. Oil Tube
6. Valve Attaching Screw
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