Reproduction Parts for 1916-1964 Chevrolet Passenger Cars & 1918-1987 Chevrolet & GMC Trucks



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#438932 02/28/20 02:04 PM
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Ibwild Offline OP
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I have 2 questions regarding the adjustment procedures for the 1929 Chevy Coach. The first is on the brake cross shaft alinement tool. There are two holes that the tapered pin will fit in for the rod adjustment I will call upper and lower holes. Which hole is correct for the tapered pin and when you remove the gage is that the same hole for the brake pedal rod?
Second question is for the rear external shoe adjustment. The service bulletins says that the brake lever should be at the stop. I don't have a stop the lever travels to the rear of the car about 3 or 4 in and forward until the shoes start to engage the drum. I'm I missing something. This is all done without the adjustable rods installed.
Thanks to all.

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ok, here is what i did on my 1929, i got the tool and then the instructions, have the set from the Chevrolet repair manual, Chiltons (yes chiltons), and then the Chevrolet service news. the chilton has pictures, as does the service new one.

step 1,2,3 disconnect brake pedal lever, disconnect front lever, disconnect rear lever.

FRONT
the guide tool is 1929 specific and per the instruction the pin does NOT go in the hole but lines up with it, since it is at an angle, (points to it) i centered the pin to point at center of the hole in the brake piece. the hole is the same as the one that the brake pedal lever connects to. picture of hole below
front rod should rest against the front stop. as in picture

REAR
i let the brake lever rest against the strap on the rear parking brake lever. as in picture, then did all the adjustments per the instructions.

i can send a copy of any of the above if needed. all in pdf

Attached Images
front.jpg Tool.jpg Rear 01.jpg

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also made sure your cross shafts move freely and easily by hand with little or no effort with rods disconnected
you should be able to spin it and then the springs should pull it back easily and freely. i had to remove mine clean it up and then reinstall and shim/square it up and now it is super smooth !!

1929 Cross Shaft Lubrication


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Ibwild Offline OP
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Thanks for the pictures I see my problem. The piece that the adjustment gauge tapered pin points to has 2 holes on mine. Your's only has 1 hole can't go wrong with that.

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wonder if someone drilled in another hole or something .??
i can measure and locate the hole if you want to know which one


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Ibwild Offline OP
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Thanks that would be great. If you can measure from the top clevis pin straight to the hole that would give me a good idea.

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The previous owner of my 29 coupe drilled an extra hole in the c shaped piece that equalizes the front and rear cross shafts. He was having difficulty with the brakes and thought if he changed the pivot point it would help with the stopping ability. When I got the car I remove, cleaned, and lubricated every pivot point, cross shaft, and brake component on the entire system. It now stops as good as it did when new. Every year you should take an oil can and lubricate all of those points.

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sorry for the delay, was busy finally downloaded pictures to post

pictures are labeled upper pin to brake lever pin and lower pin

any questions let me know

Attached Images
Lower Pin to Brake Pedal Lever Pin.jpg.jpg Upper Pin to Brake Pedal Lever Pin.jpg

AACA - VCCA - Stovebolt - ChevyTalk
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Ibwild Offline OP
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Thanks very much. Just what I needed. I will let everyone know what I find.

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Ibwild Offline OP
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Thanks to BearsFan 315 question answered. I have the brake rod in the correct hole on the proportioner. Just a wild thought but my 29 coach was built in Jan of 29 in the Oakland Ca. plant and first sold here in Sacramento Ca. in early Feb of 29. Is it possible that the proportioner had a very early change. I have verified that the car was all original when I purchased it in 1998. All the wood was dry rotted I had to tear it down But all original parts are back on per a very early Ca Title that I have.

Last edited by Ibwild; 03/02/20 03:22 PM.

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