PowerTech 6105HF - Page 136

Cylinder Head and Valves
02
020
62
RG,RG34710,97 –19–01NOV00–3/9
RG8262A –UN–06DEC97
Rocker Arm Oil Tube
RG10343 –UN–09SEP99
Valve Bridges and Push Tubes
A—Hold-Down Clamps
B—Oil Tube (Early Engines with Dual Rail Fuel
System)
C—Push Tubes
D—Valve Bridges
E—Slots
IMPORTANT: DO NOT reuse rocker arm shaft
hold-down clamp cap screws. Ensure
that new cap screws are used for
reassembly.
NOTE: On early engines with dual rail fuel system, install
hold-down clamps (A) with oil tube (B) at second
clamp location from front and rear of engine.
5. Install rocker arm hold-down clamps. Install cap screws
finger tight.
6. Install twelve valve bridges (D) with slots (E) facing
exhaust manifold side of engine. Be sure each bridge
is properly seated onto two respective intake and
exhaust valves within a given cylinder.
7. Install twelve push tubes (C) on top of bridges.
8. Make sure intake, exhaust, and injector rocker arm
adjusting screws are loose to eliminate binding shaft as
clamps are tightened.
9. Initially tighten rocker arm hold-down cap screws in the
end of each shaft to pull shaft down onto locking roll
pins. Next, going from front-to-rear of engine, tighten
hold-down clamp cap screws to the following
specification:
Specification
Rocker Arm Shaft Hold-Down
Clamp Cap Screws (All
Engines)—Initial Torque 30 N•m (22 lb-ft)..................................................
Make an additional pass from front-to-rear and verify
torque specification above.
IMPORTANT: Torque-Turn procedures for rocker arm
shaft clamp cap screws differ between
engines with dual rail and single rail
fuel systems. Use proper procedure for
engine application.
10. Torque-Turn rocker arm shaft clamp cap screws using
proper procedure for type of fuel system as detailed
on following pages.
CTM100 (06APR04) 02-020-62 P OWER T ECH 10.5 L & 12.5 L Diesel Engines
040604
PN=134
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