Rocker Arm - Detroit Diesel MBE 4000 Service Manual

1.21

ROCKER ARM

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1.21 ROCKER ARM
Perform the following procedures for removal and installation of the rocker arm:
1.21.1 Rocker Arm Removal
Remove the rocker arm assembly as follows:
1. Remove the cylinder head cover on each cylinder head. Refer to section 1.1.1.
2. Remove the rocker arm assembly. See Figure 1-128.
1. Cylinder Head Cover
2. Rocker Arm Mounting Bolt
3. Rocker Arm Assembly
Figure 1-128
[a] Loosen the each valve lash adjusting screw.
[b] Remove each rocker arm mounting bolt.
[c] If removing more than one rocker arm assembly, mark the assembly with a paint pen
to identify it on installation.
[d] Remove the rocker arm assembly from the cylinder head.
3. Inspect the rocker arm assembly for wear. If necessary, disassemble the rocker arm
assembly and replace any worn parts. Refer to section 1.21.2.
1-166
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Rocker Assembly
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4. Intake Valve Bridge
5. Exhaust Valve Bridge
6. Pushrod
6SE412 0403 Copyright © 2004 DETROIT DIESEL CORPORATION
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All information subject to change without notice.
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