Cylinder Head and Valves
02
020
66
RG,RG34710,97 –19–01NOV00–7/9
RG10281 –UN–20AUG99
Index Rocker Cap Screw
RG10282 –UN–20AUG99
Ratchet Parallel to Crankshaft
RG10283 –UN–23SEP99
Ratchet Perpendicular to Crankshaft
A—Line on Rocker Cap Screw Head
B—Ratchet Parallel to Crankshaft
C—Ratchet Perpendicular to Crankshaft
Torque-Turn Rocker Arm Hold-Down Clamp Cap
Screws on Engines with Single Rail Fuel Systems
1. After applying initial torque of 30 N•m (22 lb-ft), start at
front cap screw and proceed to the rear and
torque-turn each cap screw 90° +10° —0° as follows:
• Using an oil proof pen, pencil, or marker, draw a line
(A) parallel to the crankshaft across the entire top of
each cap screw head. This line will be used as a
reference mark.
• Install ratchet/socket on cap screw with ratchet
handle parallel (B) to crankshaft.
• Tighten each cap screw 90° so ratchet handle is
perpendicular (C) to crankshaft. Remove
ratchet/socket from cap screw and verify line on top
of cap screw is perpendicular to crankshaft.
NOTE: If cap screw is tightened beyond aligning mark,
loosen cap screw and repeat procedure starting
with initial torque of 30 N
•
m (22 lb-ft).
• Repeat procedure on remaining cap screws and
torque-turn cap screws to the following
specifications.
Specification
Rocker Arm Shaft Hold-Down
Clamp Cap Screws (Single Rail
Fuel System)—Final Torque-Turn 90° +10° —0°.....................................
IMPORTANT: Position electronic unit injector wiring
harness so that wires DO NOT touch
rocker arms.
2. Install unit injector wiring harness. Apply LOCTITE
222 (TY24311) Thread Lock and Sealer (Low Strength)
to harness cap screws. Tighten cap screws to
specifications below.
Specification
Unit Injector Wiring Harness
Bracket-to-Rear of Head—Torque 25 N•m (18 lb-ft)..................................
LOCTITE is a registered trademark of Loctite Corp.
CTM100 (06APR04)
02-020-66
P
OWER
T
ECH
10.5 L & 12.5 L Diesel Engines
040604
PN=138
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