Usage:
All Truck Engines With Break-Over Governor Control Linkage
Many times the problem of low power in the above truck engines is caused by the governor control linkage which can change adjustment, especially as the truck "breaks in". If there is a report about low horsepower in an engine, the first thing to check is the adjustment of the governor control linkage. To check the linkage adjustment, push the pedal down until it hits the stop. If the linkage adjustment is correct, the governor linkage will move to the break-over position when the pedal is against the stop. This is shown by clearance on both sides of the tang (see the Illustration). When there is clearance on both sides of the tang, the governor linkage is adjusted correctly to permit the engine to operate at high idle. If clearance is not present on both sides of the tang, adjust the governor linkage to give the needed clearance.
Governor control linkage adjustment.