Clutch adjustment

B

bbook

Member
I have gotten my 36 1.5 ton truck road legal and finally driving it a bit and noticed some squeaking that sounded like it was coming from the throw out bearing. The floorboard was keeping the clutch pedal a bit too depressed, and I understand how to adjust the rod from the pedal, but when I pulled the floor board and the inspection plate, I noticed that the shaft running through the transmission has enough side play (1/2" or so) that the fingers that push the throw out bearing can end up missing their "slot" and hit the bearing too soon.

Is the side play normal. Is there a way to keep the shaft from sliding side to side?
 
The two fingers that come of the arm actually fit into a recess on the throw out bearing hub,which is a slide fit onto the front part of the gearbox,there should be no sideways movement if the fingers are engaged.
Lawrie
 
There is no side play when the fingers are engaged, but before engagement, if the shaft slides to the left or right, the fingers are not aligned with the recesses and catch the outer edge of the hub and move it before it would have if the fingers had slid into the recesses. When the shaft slides all the way to the right, about 1/2" of the shaft protrudes beyond the bushing on the right side of the transmission. Is that movement normal?
 
Not an expert on 1 1/2 Ton. If it were a passenger car you may want to remove the inspection cover and check the throw out is returning all the way to the rear and the spring that helps it do so is in place and working. Without the throw out returning properly on the passenger car the shaft for the linkage could move in and out quite a bit. The fingers on the shaft need to have the throw out bearing hub between them to keep the shaft from moving.
 
You may be missing the little return spring that keeps the TO bearing and its hub pulled back snug against the fork fingers when not being engaged. When the fingers are correctly fitted to the ears of the hub, there can be no side to side movement of the clutch shaft.
 
The comments about the throw out bearing and hub not returning fully are likely correct. I did remove the inspection plate and the spring was in place but dirty. I cleaned it in place, but didn''t remove it for fear of dropping it into the front of the transmission with no replacement in hand. I'll look for a new spring. It is probably the same as is used on a passenger car transmission. The "Green Bible" should confirm that (or not).
 
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