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Gus Causbie (Gusc)

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Posted on Thursday, January 12, 2006 - 4:33 pm:   

Where does the clutch adjusting wheel spring attach on the outboard end? I found a place on the firewall at approximately the correct angle but nothing in my two manuals gives a clue. No spring when I bought it.
john w. roan (Chessie4905)

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Posted on Thursday, January 12, 2006 - 5:33 pm:   

My spring attaches to a longer bolt just behind the transmission output flange. There is a flat area there with three holes or bolts in a triangular pattern. One of the short bolts has been replaced with a longer one and a nut is run down the bolt to tighten the item that is attached in this triangular area.The excess bolt sticks up about 1 1/2 inches more than the origional. The return spring looks to be a screen door closing spring used on the old wood doors. About 1/2 to 5/8 in diameter and cut to length to provide enough tension ( maybe 10 to 12 inches long when untensioned ) to keep pressure off the throwout bearing when foot is off the pedal.Been that way for many years...never has given any problems.sorry if this is too long winded. Sometimes people just want to know what time it is and not how to build a watch. :-)
Tim Hoskinson (Tdh37514151)

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Posted on Thursday, January 12, 2006 - 6:01 pm:   

Thats where mine is hooked as well Gus. Mine is on the bolt nearest the clutch linkage in the triangularl pattern.
Gus Causbie (Gusc)

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Posted on Friday, January 13, 2006 - 10:00 pm:   

Thanks John and Tim. I can't picture just what you mean but will look at it tomorrow.

Do you both still have your manual parking brakes?

I would think that a screen door spring would be just about right.

It appears to me that the spring is supposed to hook to the clutch arm through the spokes of the adjusting wheel to keep it from turning. Do yours do this? It appears to me that to do this the spring needs to hook up considerably above the tran output area but it is too cold to go out and look at it right now.

Tim,

You have my email address, could you send me a photo of yours?

Thanks
john w. roan (Chessie4905)

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Posted on Saturday, January 14, 2006 - 2:44 pm:   

Ok...here goes- I don't have a emergency drum brake. Was changed to maxi-brakes several years ago. The triangular shaped flat area, I believe, was the mounting area for the parking brake actuating components.Currently, the clutch adjuster is a 2 1/2 inch dia. wheel with finger indents or scallops around the O.D. to make it easier to rotate. On the backside of this nut is a "V" shaped raised area about 1 1/4 inch long. This "V" shaped area rides in a "V" shaped notch on the end of the clutch release arm that the clutch rod goes through. This notch and raised "V" keeps the adjusting wheel from changing adjustment unless intentional. Every adjustment has to be a half turn or full turn of the wheel or more. The spring is attached to a hole about two inches below the end of the arm that the clutch rod goes through. If I recall, there may have been a different place for the spring to connect, possibly the wheel? Mine was relocated to the arm, I believe, after the air assist clutch was installed.Hope that this makes sense.
Gus Causbie (Gusc)

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Posted on Saturday, January 14, 2006 - 6:54 pm:   

John,

Thanks, this description fits mine except for the spring which is missing.

Never thought about attaching it to the adjusting wheel, sounds more logical to me because it won't add to the already too-strong clutch return force and the wheel sure can't turn then.
john w. roan (Chessie4905)

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Posted on Sunday, January 15, 2006 - 3:43 pm:   

My air assist, makes the pedal easy to push in, maybe 5 to 10 lbs pressure at the pedal.You don't need a lot of tension, just enough to keep release bearing from rotating against clutch fingers with pedal released. Sort of a pain if it is attached to adjustment wheel....you have to unhook it every time you adjust and reconnect to check it and repeat if not enough.
Gus Causbie (Gusc)

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Posted on Sunday, January 15, 2006 - 4:49 pm:   

john,
Air assist must be nice. I plan to do that if this job does not get a softer pedal than before.

Did you install the air assist? Tell me more about it. You can contact me offline at egusDOTcATpokynetDOTcom.

I replaced the yokes and pins and rebuilt the bellcrank (Xmas tree) lever with new bearings. I hope this helps but am not too optimistic.

The spring hooked to the adj wheel may not work, I'll wait until I get to that point before deciding where to hook it.

I may go ahead and replace the other muffler while I'm back there because the stock muffler is so hard to get out with all the heat shields in place, maybe impossible. I made a smaller muffler setup for one side which is easier to handle and will come out with the shields in place. Also, the pipe into the muffler is slightly longer for easier access to the clamp.
john w. roan (Chessie4905)

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Posted on Sunday, January 15, 2006 - 7:33 pm:   

I don't know where the air assist clutch components came from, I'll see if I can find out. Did you grease the pedal pivot shaft grease fittings in the compartment under the driver? By the way...the more the clutch disc wears, the more pedal pressure you will have as the release levers on the pressure plate get more off center, requiring more effort to move them.
john w. roan (Chessie4905)

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Posted on Sunday, January 15, 2006 - 7:39 pm:   

I just checked the yahoo site for air assist clutch kits...HB industries sells a kit; their site shows an installation on an 04 trans from the top. Components look the same as mine, although the mounting on mine is slightly different.
Gus Causbie (Gusc)

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Posted on Sunday, January 15, 2006 - 11:14 pm:   

john,

The first things I did were to measure the clutch free play, the distance from the floor to the clutch arm and grease these fittings.

Thanks, I'll check out the kit on the website. I went by HB Industries last Spring looking for a bus. The owner is a great guy and I will check on having him install one this Spring on our next trip. HB means "Honest Bob", by the way and is a good name for him.

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