Cruise Control Servo Cable: Adjustments

Fig. 27 Servo unit rod adjustment. 1982---83:

1982 to 1983 CRUISE MASTER

Servo Unit Adjustment

Adjust the bead chain cable or rod so that it is as tight as possible without holding the throttle open when the carburetor is set at its lowest idle throttle position. The cable is adjusted by turning the hex portion of servo. The bead chain or cable is adjusted so there is 1/16 inch of lost motion in servo cable. The rod is adjusted by turning link onto rod. With rod hooked through tab, on power unit, turn link onto rod until dimension in Fig. 27 is obtained, then install link and retainer. This adjustment should be made with ignition off and fast idle cam in off position with throttle completely closed. When connecting the bead chain or cable (engine stopped) manually set the fast idle cam at its lowest step and connect the chain so that it does not hold the idle screw off the cam. If the chain needs to be cut, cut it three beads beyond the bead that pulls the linkage.



Regulator Unit Adjustment

To remove any difference between engagement and cruising speed, one adjustment is possible. However, no adjustment should be made until the following items have been checked or serviced.
1. Bead chain or cable properly adjusted.
2. All hoses in good condition, properly attached, not leaking, pinched or cracked.
3. Regulator air filter cleaned and properly oiled.
4. Electric and vacuum switches properly adjusted.

Engagement--Cruising Speed Zeroing

If the cruising speed is lower than the engagement speed, loosen the orifice tube locknut and turn the tube outward; if higher turn the tube inward. Each 1/4 turn will alter the engagement-cruising speed difference one mph. Tighten locknut after adjustment and check the system operation at 50 mph.

Fig. 28 Typical release switch installation. 1982---83:

Brake Release Switch

The electric brake switch is actuated when the brake pedal is depressed .38---.64 inch, Fig. 28. The vacuum release switch is actuated when brake pedal is moved 5/16 inch on all units.



1984 to 1988 CRUISE CONTROL TYPE III

SERVO ADJUSTMENT
Units With Cable

With throttle closed, ignition and fast idle cam off, adjust cable until free play is removed from cable sleeve without holding throttle open.

Units With Bead & Chain

With servo cable installed on bracket, place ball of cable chain on cable end. With throttle completely closed (ignition and fast idle control off), adjust cable housing jam nuts until cable is tight, but not holding throttle open. Tighten jam nuts and check system operation.

Units With Servo Rod

With curb idle speed properly adjusted and carburetor in curb idle position with engine off, install servo rod retainer in hole that provides clearance between retainer and servo bushing. Some clearance is required, however, do not exceed width of one hole.