How do you adjust a 10 speed clutch?

Answer 1

Assuming it's an Eaton-Fuller 10 speed (I've never dealt with the Rockwell 10 speed), it's a rather simple process.

You should have 1-1/2" to 2" of free play in your clutch once it's adjusted.

On our fleet, there aren't any access covers over the bell housing. Yours might have one (especially if it's a vocational truck).

It's best if you have two people doing this. Otherwise, you'll need a prybar and hood prop for sure. Basically, one person gets underneath the truck. You take off the access cover, and look up into the bell housing with a flashlight. You'll see three bolts in a row at one point on the pressure plate - that needs to be at the bottom, and directly accessible through the access hole. If it isn't, you either need to have someone bump the starter until it is accessible, or else depress the clutch with your hood prop, and rotate it counterclockwise until those bolts are. The center bolt of those three is the one you'll use to adjust your clutch. With the clutch depressed, you'll take a ratchet and 5/8" socket, and rotate it.. clockwise to increase the amount of free play, and counterclockwise to decrease it. When your adjustment is done, there should be 1/2 inch gap behind the throwout bearing, and it should be 1-1/2" of freeplay in the clutch pedal.

Keep in mind that, one some trucks (such as the Volvo VNL and VHD and Kenworth T680, there is a hydraulic clutch, and it should adjust automatically. If it's failing to do so, I'd recommend you take it to a service center to have the work done.