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09-21-2020, 01:44 PM | #1 |
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F1 Brake return springs
The shoes I got for my F1 brakes going onto my project car have two sets of holes (see picture) which I assume are for the shoe return springs. The upper set of holes put hardly any tension on the springs while the lower holes make it darned near impossible to get the springs on. Which is right? Does it appear that I have the correct springs? Thanks!
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09-21-2020, 01:51 PM | #2 |
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Re: F1 Brake return springs
The parts I use with the F1 backing plates are the same for several years, some up into the 70s. I'm not at my computer right now (that's where all my photos are).
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09-21-2020, 02:32 PM | #3 |
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Re: F1 Brake return springs
I looked in the F series shop manual and it looks like the springs go in the upper
holes you show. If your picture is the right front looks like your shoes are on wrong, short shoe should go on the front. |
09-21-2020, 03:25 PM | #4 |
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Re: F1 Brake return springs
Here's what the 49-51 merc front brake shoes look like. I am not sure but I bet they are the same as the F100 11x2 brakes as the Merc rear was used in pickups also. Are you sure you have the correct shoes? Click on picture to enlarge shoes.
https://www.summitracing.com/parts/b.../model/mercury I don't recall if front and rear are the same. https://shoebox-central.com/1949-195...nt-brake-shoes I Bob C got it right. Last edited by 19Fordy; 09-21-2020 at 03:35 PM. |
09-21-2020, 11:12 PM | #5 |
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Re: F1 Brake return springs
Springs look like they are too long. From the appearance they look like springs for 12" brake. What's the part number?
Check the amount of coil spread on the blue springs on an F-1 brake assy. The two springs on the left are for 11" brakes; while the one on the right is for a 12 brake. |
09-22-2020, 02:07 AM | #6 | |
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Re: F1 Brake return springs
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09-22-2020, 04:23 PM | #7 |
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Re: F1 Brake return springs
48 thru 63 should all be the same. If you have a parts store nearby you might be able to compare the ones you have to ones in stock.
Here is the manual diagram. Last edited by JSeery; 09-22-2020 at 04:37 PM. |
09-22-2020, 04:40 PM | #8 |
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Re: F1 Brake return springs
And don't forget the switch the shoes around. In your first post they appear to be on backwards.
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09-22-2020, 08:16 PM | #9 | |
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Re: F1 Brake return springs
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Brake shoes are driving me crazy. I'm building an A using Lockheeds in the rear and Bendix up front. I have the rears installed upside down (I modified the backing plates to get the bleed screw on top.) and the Lockheed shoes are now big in the back, small in the front. That got my brain upside down and backwards! Got 'em fixed today. They were only wrong on the side in the photo.
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09-22-2020, 08:34 PM | #10 |
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Re: F1 Brake return springs
I don't think it is near as big a deal with the Lockheeds as it is with the Bendix brakes. It might be worth it to purchase a spring kit, they are fairly cheap.
Here are the numbers I use if you are interested. I use the self-adjusters on the F1 backing plates even though Ford didn't use them until later on. They will fit, so I use them. Last edited by JSeery; 09-22-2020 at 08:40 PM. |
09-23-2020, 12:06 AM | #11 | |
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Re: F1 Brake return springs
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If you hook a tape measure on them; the springs for the 11" brakes measure about 4-7/8" end to end compared to about 5-3/8" for the 12" brake springs. The part numbers I use for F-1 & F-100 are UP80403 from NAPA or H111 from other vendors. These numbers are for a pack of four retract springs. Usually, I only assemble manual brakes; so I buy the parts separately as the H7144 "complete" kit is for self-adjusting brakes and only includes two retract springs. |
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09-23-2020, 03:56 AM | #12 |
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Re: F1 Brake return springs
Thanks to all!!
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09-23-2020, 09:44 AM | #13 |
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Re: F1 Brake return springs
Yes, the H7144 & UP2247 are for a whole kit. It is around $9 to $10, so cheap enough to just get the whole set. If you just want the springs, then use the numbers Rich posted.
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09-23-2020, 10:16 AM | #14 |
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Re: F1 Brake return springs
.
Here's a FAIRLY-simple way to remember which shoe lining...BIG or LITTLE...goes toward the REAR, on either brake type. Bendix Big in Back Lockheed Little Lags DD |
09-23-2020, 10:58 AM | #15 | |
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Re: F1 Brake return springs
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Or, if you want go with self-adjusting brakes you would also need to buy in addition, left and right self-adjuster "repair" kits; and by rights cut another access slot in the left side backing plate. |
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