BENDIX TCH-010-004 User Manual

Technical Bulletin

Bulletin No.: PRO-10-04 Effective Date: 12/2/85 Cancels: N/A Page: 1 of 1

Subject: Cruise Control Stationary Throttle Mode

Stationary throttle control was incorporated in the truck cruise control system to permit a
rough setting of engine speed to aid in the warm-up process. Like the mechanical hand
throttle it replaces, the system sets engine speed by positioning the throttle lever. In the
stationary throttle control mode the system sets engine speed by incrementally
repositioning the throttle lever each time the “RESUME” switch is activated. The system
does not monitor engine RPM and, therefore, precise engine speeds cannot be set or
maintained.

This is particularly true in the case of varying engine loads as would be encountered
when accessory equipment such as the P.T.O. or air conditioning cycles on and off. It
should also be noted that due to the sensitivity of some engine governors, throttle
positioning is not an effective method of controlling engine speed even in a no load
condition.

In all cases the vehicle should not be left unattended for long periods of time while the
stationary throttle control is in use.

Operation of the Bendix cruise control system including the stationary throttle control is
covered in the Operational Handbook (BW-1331) packaged with all retrofit kits.