Medium and Heavy Trucks
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Hi my name is***** will be glad to help. Bare with me while I pull up your information. Also by chance do you have the engine serial number?
(1) Valve clearance setting with engine stopped:
Intake valve ... .015 in.(0.38 mm)
Exhaust valve ... .025 in.(0.64 mm)
(2) Torque for locknut on valve adjustment screw ... 24 ± 5 lb. ft.(30 ± 7 N·m)
Remove the 1/4 inch pipe plug on the front of the rear housing and put a 3/8 16 threaded bolt about three inches long in that hole. Bar over by hand tools clockwise rotation until the bolt goes in the hole in the flywheel. Mark your pulley for reference.Watch the valves on 1 or 4 one set will be rocking between inlet and exhaust on valve overlap, the other set will be loose. The loose set you adjust. Then turn it 180 degrees and 2 or 3 will be one set rocking and one set loose. Adjust the lose set. Turn 180 and then adjust the other set of the pair and 180 and repeat.
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