How to Adjust a Clutch Linkage on a Kenworth T 600


The clutch on the Kenworth T 600 is the main component that enables the transmission gears to be changed. Once the clutch pedal has been depressed, it enables the clutch plate to disengage the flywheel. Once the flywheel stops moving, the transmission gears can be shifted. After the transmission gears have been shifted, releasing the clutch pedal allows the flywheel to move again. Over time, excessive use of he clutch wears down the pads on the clutch plate. Adjust the clutch on a consistent basis to prevent the clutch plate from burning out.

Things You'll Need

  • 3-foot block of wood
  • Large flat-head screwdriver
  • Flashlight
  • 1/2-inch drive ratchet
  • 1/2-inch drive standard socket set
  • Park the Kenworth T 600 on a level surface and apply the air brakes. Turn the engine off.

  • Get out of the truck and press the clutch pedal completely to the floorboard. Position one end of the wooden block against the front of the clutch pedal and the other end of the wooden block against the base of the driver seat. This compresses the clutch pedal so you can adjust the clutch.

  • Slide under the driver side of the Kenworth T 600 near the driver-side door. Locate the access hole on the bottom of the bell housing. The bell housing is between the transmission and the back of the engine. The clutch adjustment bolt is inside the access hole. Shine the flashlight through the access hole and locate the clutch plate adjustment bolt. The bolt has to be in the 6 o'clock position before the clutch can be adjusted.

  • Locate the flywheel access hole in front of the clutch adjustment bolt access hole. Slide the end of the flat-head screwdriver into the access hole and turn the flywheel with the screwdriver while watching the clutch adjustment bolt. Once the bolt reaches the 6 o'clock position, stop turning the flywheel.

  • Make note of the clutch adjustment bolt size. It will require either a 9/16-inch socket or a 5/8-inch socket. Position the socket onto the ratchet and insert the ratchet through the access hole. Position the socket onto the adjustment bolt. Press inward on the back of the ratchet to release the spring-loaded tension off the adjustment bolt.

  • Turn the adjustment bolt clockwise three complete turns with the ratchet and socket to add free play to the clutch pedal. Slide back out from under the truck and remove the block of wood from the clutch pedal. Press inward on the clutch pedal with your hand. The clutch pedal should have no more nor less than 2 inches of free play. Adjust the clutch adjustment bolt clockwise as needed to reach the 2 inches of free play.

Related Searches


  • "Kenworth T600 Custom Service Manual"; Kenworth Corporation; 2007
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