Author Topic: 69 Booster Replacement  (Read 2950 times)

Bigfish45

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69 Booster Replacement
« on: June 08, 2019, 04:24:41 AM »
I'm going to attempt to replace my old power disc brake booster this weekend on my 69 Camaro 396 car. I already know the 4 nuts that hold the booster to the firewall are going to be very difficult. Are there any specialty tools/wrenches I should go buy before starting this project? Any other suggestions or recommendations? Would removing the wiper motor help? Should I try to access the bottom nuts from underneath? Any advice would be greatly appreciated.

Tinkerr

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Re: 69 Booster Replacement
« Reply #1 on: June 08, 2019, 12:32:15 PM »
Sorry I can't give you any advise on the booster, my car is apart(basket case) and booster is at the plater. I would be interested to know if there is any sealer or gasket between booster bracket and the firewall when you get is disassembled.  Thanks You Paul

67 RS Ragtop

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Re: 69 Booster Replacement
« Reply #2 on: June 08, 2019, 09:33:12 PM »
Not sure on '69 but 67/ 68 had a plastic tube covering the push rod (going into the pedal assy.) located between the booster and firewall, in between the mounting brkt for the booster. FWIW

ko-lek-tor

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Re: 69 Booster Replacement
« Reply #3 on: June 09, 2019, 03:48:17 AM »
Not sure on '69 but 67/ 68 had a plastic tube covering the push rod (going into the pedal assy.) located between the booster and firewall, in between the mounting brkt for the booster. FWIW
69 has it, as well
Bentley to friends :1969 SS/RS 396 owned 79
1969 SS 350 (sold)
1969 D.H.COPO replica 4spd. owned since 85
1967 302 4 spd 5.13

z28z11

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Re: 69 Booster Replacement
« Reply #4 on: June 10, 2019, 01:42:37 AM »
Pics of the reverse side of my 9204 booster from my 01C X77. I removed this from the car around 1980 when I disassembled the car, never touched since. Note there is no evidence of any gasketing on the back of the mounting flanges, only the suggestion of the holes in the  firewall where they overlap the holes in the booster flanges. Nuts and split washers (lock washers) are the only fasteners on the front side of the brackets, unplated or maybe phosphate (grey) finish. Note also that there is a thick white felt seal just inside of the plastic sealing  tube, secured with a clip, that would keep anything from getting inside of the tube (somewhat) after the tube is located in the firewall hole/opening. The plating of the booster is very visible, and even matte gold color, unlike some of the brighter zinc finishes I've seen on restored cars.

Regards,
Steve
1968 Z28 M21/U17 BRG/W 1967 Chevy ll Nova SS 
1969 Z28 X77/M20/VE3 LeMans/W
1969 L78 X66/N66 Cortez/BVT
1969 Z11 L48/M35/C60/C06  1949 3100 5wd 235/6

Edgemontvillage

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Re: 69 Booster Replacement
« Reply #5 on: June 17, 2019, 02:40:26 PM »
Here is another view of the plastic sleeve, originals are opaque white plastic with a T embossed on the top as shown.




Pacecarjeff

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Re: 69 Booster Replacement
« Reply #6 on: June 18, 2019, 02:22:35 AM »
easy removal.  15 minutes tops.

1) un-clip the booster rod from the pedal bracket.
2) remove the 2 master cylinder nuts and push the assembly forward- (no need to loosen the lines)
3) remove the 4 nuts with a longish 9/16" closed end wrench.  (all done from above)
4) pull the booster. 

Piece of cake....

ko-lek-tor

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Re: 69 Booster Replacement
« Reply #7 on: June 18, 2019, 09:39:00 AM »
easy removal.  15 minutes tops....Piece of cake....

15 minutes, huh? Say what? It takes that long to get up the nerve to get contorted enough to slither under the dash to unhook that rod. Actually getting under the dash takes another half hour!
All humor aside, if the nuts are rusty, use penetrating oil and other stubborn bolt techniques to minimize cussing.
Bentley to friends :1969 SS/RS 396 owned 79
1969 SS 350 (sold)
1969 D.H.COPO replica 4spd. owned since 85
1967 302 4 spd 5.13

Charley

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Re: 69 Booster Replacement
« Reply #8 on: June 18, 2019, 07:09:08 PM »
Gearwrench type ratcheting wrenches work great on the 4 nuts holding the booster on.

 

anything