HOUSING AS 9W3763 - Caterpillar

Decelerator Pedal Adjustment Procedure
Illustration 1.
Decelerator adjustment (typical) for machine with non-HEUI engine - current models. (1) Decelerator pedal (2) Brake pedal(3) Setscrew(4) Nut The following procedure is for machines with non-HEUI engines.1. Start the engine and run at HIGH IDLE. Depress decelerator pedal (1) until the engine speed is in the specified range for the particular model that is noted in the chart. Adjust setscrew (3) inward until the setscrew comes in contact with the governor lever inside the brake pedal. Tighten locknut (4) in order to keep the setscrew in place.2. Bring the engine speed back to LOW IDLE with the governor control lever and then increase to the HIGH IDLE position.3. Depress decelerator pedal (1) to stop and check RPM. If the engine speed is not correct, repeat Step 1. When the engine is running at the correct decelerator RPM, lock the setscrew in place.
Illustration 2.
Decelerator adjustment for machine with HEUI engine. (1) Decelerator pedal (2) Pedal stop setscrew(3) Nut (4) Decelerator RPM setscrew(5) Nut(6) Splined shaft (7) Pedal lock bolt (A) Pedal stop setscrew dimension(B) Pedal end to dash plate dimension The following procedure is for machines with HEUI engines.1. With dimension (A) set at 15 mm (.6 inch), adjust decelerator pedal (1) on splined shaft (6) to position tread surface to dimension (B), 242 17 mm (9.5 .7 inch). Lock bolt (7) in place.2. With the engine running at HIGH IDLE, screw in and lock decelerator RPM setscrew (4) so that engine speed is in the specified range for the particular model that is noted in the chart when the decelerator pedal is depressed.3. With the decelerator pedal released, check HIGH IDLE RPM against the initial high idle reading. Screw in and lock setscrew (2) to allow 5 3 mm (.2 .1 inch) free play at the end of the decelerator pedal.
Illustration 3.
Decelerator adjustment (typical) for H model machines. (1) Decelerator pedal (2) Governor lever(3) Decelerator RPM bolt(4) Nut1. With the engine running, move governor control lever (2) to HIGH IDLE. Verify correct HIGH IDLE RPM. Adjust as necessary.2. Depress decelerator pedal (1) until the engine speed is in the specified range that is noted in the chart. Adjust and lock decelerator RPM bolt (3).3. Bring the engine speed back to LOW IDLE with the governor control lever and increase to the HIGH IDLE position.4. Depress decelerator pedal to stop and check RPM. If the engine speed is not correct, repeat Step 2. When the engine is running at the correct decelerator RPM, lock the decelerator RPM bolt in place.