ROCKER ARM HOUSING REMOVAL
Handle, ratchet, 3/8-inch drive
Screwdriver, flat-tip, 3/8-inch
Socket, 7/16-inch, 3/8-inch drive
Wrench, box-end, 5/8-inch
Wrench, box-end, 3/4-inch
Tags, marker (item 17, appendix B)
Engine compression brake housings removed
Before performing following steps, tag rocker arm housings with location on engine.
Steps given are typical for all three rocker arm housings.
1. Intake and exhaust
Locknut (2) and
adjusting screw (3)
2. Fuel injector rocker
Locknut (5) and
adjusting screw (6)
Using 3/4-inch box-end wrench and 3/8-
inch flat-tip screwdriver, loosen locknut and
unscrew adjusting screw until rocker arm
Using 3/8-inch drive 7/16-inch socket,
ratchet handle, and 3/4-inch box-end
wrench, loosen locknut and unscrew adjust-
ing screw until rocker arm moves freely.
Rocker arm studs are different lengths. Before performing step 3, tag rocker arm studs.
See illustration for location and lengths.