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Paco Express (206.28.236.48)

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Posted on Tuesday, March 05, 2002 - 7:25 pm:   

I am currently reinstalling the Parking Brake (Johnson Brake) on my 1960 GMC 4104. I have purchased all parts except Brake Drum and Shield. I would appreciate any assistance in locating these two parts. Luke with US Coach had all parts except the Drum and Shield.
Jim Stacy (32.101.44.188)

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Posted on Tuesday, March 05, 2002 - 9:06 pm:   

Call Garry Dean, (919) 383-4780
Jim Wilke (205.188.192.49)

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Posted on Thursday, March 07, 2002 - 10:13 pm:   

Do you have spring brakes on your 4104? If not, you should. And if you do you don't need the parking brake.

That being said, I would have given you my drum but I threw it away, thinking nobody would EVER want that. (Rest of my system was already gone.)

By the way, I had to press it off the output flange. I thought it was just held with the bolts that go thru it. Took em off & it still wouldn't come off. Had to remove flange/drum assy from the transmission & press off. By the way, the nut that holds the output flange on is to be torqued to either 600 or 800 foot lbs!
Jim-Bob
1959 4104-4039
FAST FRED (209.26.87.95)

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Posted on Friday, March 08, 2002 - 5:22 am:   

"Do you have spring brakes on your 4104? If not, you should. And if you do you don't need the parking brake."


Not sure I agree with this .

I have looked at the two systems ,
Spring or ICC and chose to stick with the ICC.


When there is a falure with spring brakes, your stuck right there , middle of the road, an intersection, whatever.

With the ICC the coach can at least be CAREFULLY moved , as the Johnson bar is equal to one real brake, enough to stop you in first getting off the road.

Also I dont like having the drums distorted by the release , system , where both the springs AND the air is pushing on the drums to release the springs.

Finally on an 06 , there is loads of welding to install spring brakes.

Dont know any welders that want to have a liability problem forever.

Sometimes what is forced on an industry , might not be the best choice for an owner.


FAST FRED
Scott Whitney (66.214.66.193)

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Posted on Friday, March 08, 2002 - 3:58 pm:   

I believe the new style valve that I had installed when I had a truck shop put spring brakes on my bus will not allow both the spring brake and service brakes to double the force. But I could be wrong. There are times when I am trying to put my bus on ramps where I sort of let off the service brake while applying the parking brake. I try to do it as a transition without applying both. It seems to work - but I suppose I wouldn't know if I were doubling the force either.

Also, in case of a complete air system failure, on my spring brake chambers, there is a special bolt that can but screwed in to release the brakes to get you off the road if need be.

But I am keeping my Johnson bar just in case! Two brakes are better than one, but three is best, right?

Scott
Al (206.28.236.203)

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Posted on Friday, March 08, 2002 - 7:41 pm:   

Thanks to all that responded to my Johnson Brake delimma. I currently have ICC brake, no spring brakes which i wish I had. Right now my method of parking is wheel chocks and in gear.
I have only aquired my bus 4 months ago. Thanks to Bus Nuts, I am getting a world of information. Also I don't have power Steering, but did aquire an air assist off of a 4104 from my good friend Luke. So I think I will still pursue the drum.
Sincerly Paco Express.

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