8-10. IDLE SPEED ADJUSTMENT
This task covers: Adjustment
A l l
4-11 Rocker arm covers removed
Governor spring housing cover
TOOLS AND SPECIAL TOOLS
removed (Dual range)
General mechanics tool kit (App B, Item 96)
Governor spring housing
cover removed (Limited speed)
Turbocharger inlet sheild (App B, Item 81)
Buffer screw backed out
Avoid contact with hot manifolds, pulleys, and other moving parts to
avoid personal injury.
Wear proper ear protection when running engine. Noise volume of
engine can cause hearing loss or injury.
Protective turbocharger air inlet sheild musr be installed prior to doing
maintenance when engine is running and air inlet has been removed.
Contact with rotating blades will cause injury to personel
Run engine in clean area when air intake ducting is removed. Dirt, dust, and particles
in unfiltered air can enter engine and damage parts or cause mechanical failure.
Start engine and operate coolant temperature of 160-185° (71.1-85.0°C) is attained.
PLace governor speed control lever (1) in IDLE position.
Hold screw (2) and loosen locknut (3). Adjust engine speed screw (2) to obtain 625+/-25
RPM. Hold adjusting screw (2) in position, and tighten locknut (3).