My clutch has a hose clamp holding the piece that hangs on the end of the rod that goes through the frame and locks into the stirrup shaped piece that actually pushes the rod that pushes the clutch throwout arm. It gets loosy goosey and the clutch doesn't work right. Before I start taking it apart, any ideas about what is going on or what I need to look at?

 

Mine has a roll pin that holds everything on the shaft on the transmission side and another (threaded) pin that holds it on the running board side (next to the grease fitting on the end of the shaft that goes through the frame). I'm currently trying to get that pin out on the running board side, so I have the opposite problem of you, it sounds!

 

Thanks.. I thought that that was what the parts diagrams looked like. Guess I'd better get out there and take it apart. I'll be back to write about what I find.

 

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Under the truck this AM. Referencing the diagram above part number 7544 gets out of the hole in part number 7572 and the clutch stops working. Looks like there should be a spring and/or shim that keeps 7572 pushed inboard and keeps 7544 in the hole. All that make sense? No sight of the shim or spring and the parts are coated with dried dirt and grease. I can insert a screwdriver between 7572 and push it away from the frame and fully seat 7544 in the hole. I'm thinking that I just need to fit a horseshoe shaped shim between 7572 and the frame to keep it engaged with 7544. Ideas?

 

How about a picture.. The space you see with no gunk on it is where the stirrup moves back and forth...

 

Looks like the short term temporary, get it off the side of the road, fix might be to wrap a piece of coat hanger around the shaft between the stirrup and frame.

 

I think your problem may be at the other end, where the pedal arm (7520) attaches to the shaft (7506) and rides against the bushing (Not shown in the parts blow-up. The red arrow #1 in my pic)

If the pedal arm isn't properly connected and tight, or the pedal arm or bushing is worn at arrow #1, it will allow the part #7544 to fail to engage with part #7572. The spring (7545) will actually push the shaft (7606) toward the transmission, causing your situation to be consistently worse.

Assuming everything is properly connected, but worn, the permanent answer might be to put a shim/shims at arrow #1 to push everything out away from the transmission, thus forcing part #7544 further into part #7572.

Mine looks a little different because it is a '53, and has been modified for a dual master cylinder (the stirrup is narrower and the bushing 7610 is longer) but the parts are the same and work the same.

 

On second thought, (re-reading what you said about the stirrup "moving" back and forth) there is another possibility.

If the stirrup (7572) it's bolt (7555) or shim/washer (44742-S) is worn, it might allow the stirrup to slide further away from the transmission. This could also allow part #7544 to not engage the "stirrup" (7572) properly.
This is a pretty good possibility because it's one of only 3-4 joints in the entire drive train that doesn't have a grease fitting. The only way I can see to lubricate it is to put a few drops of oil on the felt washer from time to time.

It's also possible the bolt (7555) is loose, the pin (352145-S) is worn or broken, or the clutch arm retaining bolt (5782) is worn or installed wrong. Or a combination of my last post and any of these.

I would clean everything up and see what is worn and that everything is installed properly and tight. Then come up with a plan of action from there.

 

Thank You! Wonderful pictures and excellent ideas about what the problem really is... Thanks!

 

Question: Does the 7610 bushing establish the relationship (distance) between the stirrup and the frame?

 

No, the stirrup actually slides over it.

While the stirrup slides over the shaft, it and the transmission are pretty much isolated from the frame. That's why it's designed like this.

Here is a pic of my original bushing stuck in the original stirrup.

If your stirrup or it's bolt isn't worn out, is there any chance the engine mounts are worn out or modified so the transmission has shifted to the left?

Sent from my iPhone using IB AutoGroup

 

I've got to get back under the truck with a pry bar and a light to see exactly what is moving when I push against the stirrup.. The inboard end of the stirrup looks solidly fastened to the bracket on the transmission. Something allows the hooked piece to move into the stirrup enough to let the hook get out of the hole.

 

Put a screwdriver between the frame and clutch pedal... Bingo! That seemed to pull everything to where it should be. Think I'll drive up the road and pressure wash this stuff and plan to take it all out..