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12-08-2020, 05:21 PM | #1 |
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Join Date: Nov 2013
Location: Ahwatukee, AZ
Posts: 115
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Service Brake Cross Shaft lubrication
I just disassembled the shaft and the bushing are completely seized (no wonder the brakes were so crappy!). After freeing them up I'm considering drilling them and installing two grease zerks. Has anybody done this? Surprisingly the bushings themselves don't seem worn at all.
Thanks, Ned
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Retired civil engineer. Winters in Phoenix, summers in Ipswich, Mass. and North Dakota. '29 closed cab pickup- Excellent AZ truck. '29 roadster- Owned for 21 years but now sold. '28 CC pickup- My first car in Andover, MA back in '62- '63. |
12-08-2020, 06:58 PM | #2 | |
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Location: Eastern Tennessee
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Re: Service Brake Cross Shaft lubrication
Quote:
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12-08-2020, 08:05 PM | #3 |
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Join Date: Nov 2013
Location: Ahwatukee, AZ
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Re: Service Brake Cross Shaft lubrication
"Cloth insert"? Hmm, that's a new one to me. I'm sure if they did then they've disintegrated. I bought the replacement 2-part bushings and just assumed (and we all know what that does) the originals were plain bronze like them. Any idea why they had cloth inserts? Does Snyder's kit include cloth inserts? Do I need cloth inserts?
Back to the original question: Has anybody added grease zerks to lube those bushings? Thanks, Ned
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Retired civil engineer. Winters in Phoenix, summers in Ipswich, Mass. and North Dakota. '29 closed cab pickup- Excellent AZ truck. '29 roadster- Owned for 21 years but now sold. '28 CC pickup- My first car in Andover, MA back in '62- '63. |
12-08-2020, 09:54 PM | #4 |
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Join Date: May 2010
Location: So Cal
Posts: 8,741
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Re: Service Brake Cross Shaft lubrication
Snyder's shows them. The originals I've seen look a little different,
maybe just worn. |
12-09-2020, 12:49 AM | #5 |
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Join Date: May 2010
Location: Chief lake BC Canada
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Re: Service Brake Cross Shaft lubrication
I drilled and cross drilled one side then added zerks to mine years ago. It works good for me.
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12-09-2020, 08:28 AM | #6 |
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Location: Charlotte, NC
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Re: Service Brake Cross Shaft lubrication
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12-09-2020, 08:46 AM | #7 | |
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Join Date: May 2010
Location: Eastern Tennessee
Posts: 11,508
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Re: Service Brake Cross Shaft lubrication
Quote:
Ned, yes it has been done (-even an article in one of the national magazines) but you coming from an engineering background, let's chat about what is gained by an 'afterthought' grease fitting? Start by doing the math to figure how much rotation the shaft actually makes, ...and the frequency of that rotation. Why not just pre-lube everything with a high-pressure grease when doing the assembly, and then every 5,000 miles or so when you are doing regular undercarriage maintenance, give each of those bushing a shot or two of oil from your Eagle oil can? The longevity of the proper bushing with grease, and following up with some oil to keep the cloth lubricated will likely last longer than the rest of the braking components. After this, if you are still thinking it is a good idea to install a grease fittings on the cross-shaft, don't forget to drill each of the Clevis pins for micro grease fittings because they don't get any lubrication either. |
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12-09-2020, 05:02 PM | #8 |
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Join Date: May 2010
Posts: 2,789
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Re: Service Brake Cross Shaft lubrication
I recall reading years ago, that those parts being sold by vendors made of aluminum, like in the 70's, were pretty poor quality and to avoid them. Probably a number of Model A's running around with them today.
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12-10-2020, 11:01 AM | #9 |
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Join Date: Nov 2013
Location: Ahwatukee, AZ
Posts: 115
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Re: Service Brake Cross Shaft lubrication
Well I drilled out one of them and by golly there is what appears to be cloth inside of it! I will have to get a press fit zerk for it today, but otherwise I just freed it so it turns fine and oiled it up well and in a hurry to get it all back together, reassembled "as-is". Thanks for all of the help guys.
Ned
__________________
Retired civil engineer. Winters in Phoenix, summers in Ipswich, Mass. and North Dakota. '29 closed cab pickup- Excellent AZ truck. '29 roadster- Owned for 21 years but now sold. '28 CC pickup- My first car in Andover, MA back in '62- '63. |
12-10-2020, 12:04 PM | #10 |
Senior Member
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Re: Service Brake Cross Shaft lubrication
I have been using the split bushings for 20 years. I lubed them with some sticky red grease upon installation. Checked them about 5 years ago and they were still full of grease. The split bushings work well.
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