Re: An Air Cleaner from a '33 - To Clean or Disassemble
Posted by 32model901 On 2014/8/3 15:17:59
A few additional pictures, of a 901 with a downdraft setup.
On the Bijur repair I've used two approaches, for fixing the rubber diaphragm.
As previously stated, the mechanical portion of the Bijur pump unit is fairly robust.
I've found air brake cylinder diaphragms from Mack trucks to be a good fit, in thickness and material (fabric reinforced rubber).
PM me if you're interested, I may have a few left.
By carefully grinding around the lip of the vacuum power unit on the Bijur unit you can separate the halves.
I've tried the crimp and roll method using a 3/8 wide strip of steel and forming it around the two halves to crimp them together. This worked for a while, but I wasn't able to get enough compression of the rubber diaphragm to maintain a good seal.
I then used small #4-40 screws and tapped the flange of the bottom vacuum power unit in multiple places. Once painted the screws are not that visible and it easily allows you to tighten or repair the power unit in the future.
Attach file:
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On the Bijur repair I've used two approaches, for fixing the rubber diaphragm.
As previously stated, the mechanical portion of the Bijur pump unit is fairly robust.
I've found air brake cylinder diaphragms from Mack trucks to be a good fit, in thickness and material (fabric reinforced rubber).
PM me if you're interested, I may have a few left.
By carefully grinding around the lip of the vacuum power unit on the Bijur unit you can separate the halves.
I've tried the crimp and roll method using a 3/8 wide strip of steel and forming it around the two halves to crimp them together. This worked for a while, but I wasn't able to get enough compression of the rubber diaphragm to maintain a good seal.
I then used small #4-40 screws and tapped the flange of the bottom vacuum power unit in multiple places. Once painted the screws are not that visible and it easily allows you to tighten or repair the power unit in the future.
Attach file:
(90.50 KB)
(103.00 KB)
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