Which brakes are these? |
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92889
Member Joined: 24 Dec. 2015 Location: Tsawwassen, BC Status: Offline Points: 973 |
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Posted: 30 Oct. 2016 at 5:48am |
I thought I had a 42 GPW with a Dana 30 rear end. To be honest it turns out my jeep is a bit of a salad. The brake cylinders I ordered look different than the ones I want to replace. They are smaller and the holes don't line up. Also the brake mechanism does not seem to match the diagrams I have from the manual. Any chance you can help me identify what I have for a rear end in my jeep. I want to make sure I am ordering the right parts.
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15 Field RCA
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montymech
Member Joined: 18 Apr. 2012 Location: Dartford. UK Status: Offline Points: 324 |
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They look like mine: Bendix 11" CJ5 brakes, fitted as upgrades. Boy, how I struggled with these things a couple of months back, but now sorted thanks to the good folk here. Do a site search for lots of information on the topic.
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rocketeer
Member Sponsor Member Joined: 26 June 2008 Location: Lehighton, PA Status: Offline Points: 3473 |
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A full floating rear with seperate drums and hubs? Seems you've got a frankendiff in there. Note the holes that were drilled to accomodate the newer backing plates. As montymech says, those appear to be CJ5 brakes. A general, but very important, rule of thumb when working on these old jeeps is to never assume, especially when ordering any parts. Always research first and make certain of what you have before ordering. A lot of mix/matching, modifying, and converting can, and does, occur in 70 years.
Edited by rocketeer - 30 Oct. 2016 at 12:23pm |
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Mark W.
Member Sponsor Member Joined: 09 Nov. 2014 Location: Silverton, OR Status: Offline Points: 7923 |
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HOW do you have a DANA 30 as a rear end? I thought they were only a front axle?
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Chug A Lug
1948 2A Body Customized 1949 3A W/S 1957 CJ5 Frame Modified Late 50's 134L 9.25"clutch T90A D18 (1.25") D44/30 flanged E-Locker D25 5.38 Since 1962 |
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92889
Member Joined: 24 Dec. 2015 Location: Tsawwassen, BC Status: Offline Points: 973 |
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Montymech- THANK YOU!! That look exactly like mine. Fortunately the only brake parts I ordered are the wheel cylinders. I will send them back to RF and get the ones I need.
Rocketeer - you said it brother. I think I will have to change the name of my project from "THE RUSTY COQ" to the " FRANKENJEEP ". From now on I will post pictures here before ordering parts. Mark - the manuals that I have read state that all the differential parts are interchangeable front to back. I can't find the reference right now but i read it in one of the war department TM manuals. But what do I know, (first time builder) !! Thanks for the help guys. Standby for lots more questions. Jon |
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15 Field RCA
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SE Kansas 46 CJ-2A
Member Sponsor Member x 3 Joined: 22 Jan. 2016 Location: S.E. Kansas Status: Offline Points: 3183 |
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There was a Dana 30 rear axle used on 67-68 Jeep C-101 (Commando) models with available gear ratios of 3.31, 3.73, 4.27, and 4.88 with Power-Lok differentials possible as an option on all ratios. Since the Commando was not a real popular vehicle, there aren't very many of these rear axles out there. The model number on Dana axles refer to the model of the differential carrier, related sets of ring and pinion gears, and the center "pig", not the position that the axle was used (front or rear). IF some manufacturer had wanted a model 41 axle in the front of some truck they were building, I'm quite sure that Dana would have taken the center section of a model 41 axle and mated it with axle tubes that had steering knuckles. That didn't happen, of course, but I'm also sure that Dana wouldn't have passed up the opportunity the sell axles and parts. Edited by SE Kansas 46 CJ-2A - 30 Oct. 2016 at 5:19pm |
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46 CJ-2A #64462 "Ol' Red" (bought April 1969)(second owner)(12 V, 11" brakes, M-38 frame, MD Juan tub)
U.S. Coast Guard Chief Petty Officer(ret.) U.S. Army Vietnam veteran and damned proud of it. |
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92889
Member Joined: 24 Dec. 2015 Location: Tsawwassen, BC Status: Offline Points: 973 |
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SE Kansas,
Like I say... new builder, so I am probably wrong.. I think the axle is a Dana 30 but it may very well indeed be something else. Can anyone positively identify this axle. Are there any marks or numbers I can reference to get an answer? Thanks Jon
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15 Field RCA
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SE Kansas 46 CJ-2A
Member Sponsor Member x 3 Joined: 22 Jan. 2016 Location: S.E. Kansas Status: Offline Points: 3183 |
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All of the reference books I used to identify various Dana Spicer axles are long gone, sold to the buyer of my driveline business many years ago.
Perhaps the diameter of the ring gear would be a clue. It looks like a later model to me, but I don't know anything that would be a full-float rear end that would fit under a MB jeep other than the original model 23 axle. I am not familiar with the model 23, as I never worked on one. 46 and later I have worked on many, but they are semi-float axles. Anyone have any ideas? |
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46 CJ-2A #64462 "Ol' Red" (bought April 1969)(second owner)(12 V, 11" brakes, M-38 frame, MD Juan tub)
U.S. Coast Guard Chief Petty Officer(ret.) U.S. Army Vietnam veteran and damned proud of it. |
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LesBerg
Member Joined: 09 Apr. 2014 Location: Athol, ID Status: Offline Points: 1554 |
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That looks an awfully lot like a Dana 41 cover to me...
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1948 CJ2A 157713 24" Stretch "Old Ironsides"
1st Armored Div 6th Infantry Reg 3rd Infantry Bn Headquarters Company #161 rubigo in quo speramus - "In Rust we Trust" |
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berettajeep
Member Sponsor Member Joined: 03 Feb. 2009 Location: Astoria OR Status: Offline Points: 4304 |
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Google search of the part number on the backing plate:
http://www.earlycj5.com/xf_cj5/index.php?threads/can-someone-identify-these-backing-plates.82937/ |
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berettajeep
Member Sponsor Member Joined: 03 Feb. 2009 Location: Astoria OR Status: Offline Points: 4304 |
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oldtime
Member Joined: 12 Sep. 2009 Location: Missouri Status: Offline Points: 4139 |
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The axle seen in the first pic is certainly the Dana 23-2 not a Dana 30.
The FDR will be 39/8. Furthermore I think its an MB version and not a Ford GPW. To determine MB vs Ford ...look inside the cast cover to see if its marked "FORD" The brakes are 11" Bendix brand. The drums are non finned . Fits 1972-1973 CJ. They are rear backing plates and not front because they have the parking brake components.
Edited by oldtime - 30 Oct. 2016 at 6:54pm |
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Currently building my final F-134 powered 3B .
T98-A Rock Crawler using exclusive factory parts and Approved Special Equipment from the Willys Motors era (1953-1963) Zero aftermarket parts |
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92889
Member Joined: 24 Dec. 2015 Location: Tsawwassen, BC Status: Offline Points: 973 |
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Thank you oldtime.
appreciated! |
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15 Field RCA
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92889
Member Joined: 24 Dec. 2015 Location: Tsawwassen, BC Status: Offline Points: 973 |
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The ring gear has 39 teeth and the pinion gear 8.
I found lots of marks on the ring gear: SPICER 39 8A 16414 9533 TTT H9 12 44 RR I do not see any Ford markings. I think old-time has it right Dana 23 Thanks again. Is it worth pulling out the differential while I have it on the bench and servicing the inner axle roller bearings, or am I asking for trouble? The manual shows lots of specialty tools.
Edited by 92889 - 31 Oct. 2016 at 6:54pm |
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15 Field RCA
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SE Kansas 46 CJ-2A
Member Sponsor Member x 3 Joined: 22 Jan. 2016 Location: S.E. Kansas Status: Offline Points: 3183 |
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It is my belief that Dana Spicer shipped identical axles to the Ford and Willys assembly plants. If there are Ford markings on GPW axles they were more than likely applied at the time the axles were installed. I am unsure how complete the axles were when they left Dana but they probably could have included the brake assemblies.
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46 CJ-2A #64462 "Ol' Red" (bought April 1969)(second owner)(12 V, 11" brakes, M-38 frame, MD Juan tub)
U.S. Coast Guard Chief Petty Officer(ret.) U.S. Army Vietnam veteran and damned proud of it. |
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Unkamonkey
Member Joined: 23 Mar. 2016 Location: Greeley CO Status: Offline Points: 2093 |
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Yep, that brake assembly is certainly not the stock double anchor 9" brakes that came on a 23-2. I think I have about 6 of them out in the garage.
Somebody has done a brake upgrage on it. Good for you and I must ask what you have for the front brakes as they must play well together to stop safely. |
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uncamonkey
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oldtime
Member Joined: 12 Sep. 2009 Location: Missouri Status: Offline Points: 4139 |
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Absolutely every GPW part will be identified as a Ford product.
Ford typically used the "F" script for identification but the inner Dana 23-2 cast iron covers were deep stamped (or cast) with "F O R D". See if the differential case bearing cap bolts have the "F" script on the head. If not, then this rear should be considered as MB stock not GPW.
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Currently building my final F-134 powered 3B .
T98-A Rock Crawler using exclusive factory parts and Approved Special Equipment from the Willys Motors era (1953-1963) Zero aftermarket parts |
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jeeper50
Member Sponsor Member Joined: 01 Mar. 2008 Location: Spanish Fort AL Status: Offline Points: 2579 |
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11" self energizing brakes for sure, order parts for a 72-75 cj5 for the correct fit. also check rockauto.com for their prices they are clearancing their stock of older vehicle parts. I bought 11" drums Non finned for $29 ea from them.
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Belleview ol skool winch soon. '48 CJ2A 283 V8 sm 420 granny low, tera low D18, overdrive,lockers Texan at heart,Alabama by retirement |
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