Axle bumper spacers FYI |
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Bill2A
Member Joined: 01 Mar. 2018 Location: Fort Worth, Tex Status: Offline Points: 517 |
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Posted: 30 July 2018 at 2:03am |
While I don't know if the wooden spacers were factory, I will say that the hood blocks for the windshield to lay on were oak.
The hat channels had oak inside of them and the spacers to lower the cross member for the T98 were oak. So, if they are neat, consistant and look like they may have come from the factory, I'd guess they are made of...oak.
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1946 CJ2A 14098
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dan s
Member Joined: 18 May 2011 Status: Offline Points: 262 |
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Here is a little more Willys History on front axle spacer, part number 646671.
Found this in one of my vintage willys manuals. Dan S Edited by dan s - 29 July 2018 at 10:11pm |
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Bill Norris
Member Joined: 01 May 2006 Location: MI Status: Offline Points: 1839 |
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Sam,
Funny you mention that. I was thinking that myself when I posted that. Yes, most of the production changes include serial number and build date for the change. If I get some time, ha,ha, I'd like to build a table with the dates and serial numbers. Maybe over the holidays I'll get some time to do that.
Bill
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samcj2a
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Bill, I just realized that the information in that tech bulletin relates apparent production dates to serial numbers. It seems that "someone" could go through your collection of tech bulletins and relate some number of dates to serial numbers over the production span of the 2A. That could be of interest for those curious about when their 2As were built. Do most of the bulletins that mention changes at a given serial number also indicate the date of the change? |
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Bill Norris
Member Joined: 01 May 2006 Location: MI Status: Offline Points: 1839 |
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Ok, here is a tech bulletin on found on the front spacers.
Bulletin 48-60 10/28/48 When special equipment is installed, such as the Monroe Hydraulic Pump and special drives for winches and water pumps, it has been necessary to install Front Axle Bumper Spacers, Part No. 646671, in order to prevent interference with the front axle on full spring compression. Beginning with Model CJ-2A, Serial No. 178936, on March 17,1948, Part No. 646671 Front Axle Bumper Spacers were installed in regular production. After this serial number, the insertion of additional spacers, when installing front power take-off driven equipment, is not necessary. Now, due to a recent change in Model CJ-2A frame, further use of the Front Axle Bumper Spacers is not required. This new frame started with Model CJ-2A, Serial No. 215648, on September 20, 1948.
Bill |
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Bill Norris
Member Joined: 01 May 2006 Location: MI Status: Offline Points: 1839 |
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I have a tech bulletin related to the front ones. I'll dig that out. As I recall, it is from 1948 and is in regards to Monroe Lift equipped 2As.
Bill
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sean
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Remember, that's a casting number, not a part number.
There are a number of instances where the same casting was used to make different parts: eg. connecting rods - the same casting was use for all rods, but there were 2 different part numbers for #1 & 3 cylinders, and #2 & 4 cylinders Sometimes they used the casting number as the part number, sometimes they did not. Sean Edited by sean - 02 Nov. 2007 at 9:52pm |
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lowenuf
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well, i just went out and inspected my 4 that came off of the '45 frame, 2 have been sandblasted, and 2 haven't been yet, and guess what... all 4 have the 640207 part number, and i have to make a correction, 2 of them ARE slightly bowed, the other 2 are not.....but all 4 will fit at any place on the frame i apply them..low
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45 #10012
45 #10033 ACM #47 45 #10163 ACM #188 57 CJ5 Dauntless V6, T-18 4-speed, D-44 rear/D-30 front, D-20 twin stick |
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trader_reed
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What do you want to bet?
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lowenuf
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i am curious if your fronts have the same part number as the rears, i would almost bet they do :)
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45 #10012
45 #10033 ACM #47 45 #10163 ACM #188 57 CJ5 Dauntless V6, T-18 4-speed, D-44 rear/D-30 front, D-20 twin stick |
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trader_reed
Member Sponsor Member Joined: 09 Nov. 2005 Location: Ireland Status: Offline Points: 2201 |
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Who knows what really went on in that factory! Here is a good shot of the rear spacers removed and a bad shot of the fronts installed.
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lowenuf
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and that bulletin addresses the rear bumpers, but mentions nothing about the front bumpers..all 4 of my bumper spacers are the same, with the same part number and are cast material, all 4 are flat, none are curved, and sit perfectly flat against the frame.. (doesn't mean they are factory, but they did have what looked like 60 years of the same crud on them when i removed them)...low
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45 #10012
45 #10033 ACM #47 45 #10163 ACM #188 57 CJ5 Dauntless V6, T-18 4-speed, D-44 rear/D-30 front, D-20 twin stick |
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Bill Norris
Member Joined: 01 May 2006 Location: MI Status: Offline Points: 1839 |
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Ok, here is the tech bulletin I was referring to:
Bulletin 48-19 dated 4/2/48 It has been found that Bumper Spacer, part No. 640207, two required per vehicle is available when installing a power take-off assembly to prevent the power take-off propeller shaft from striking the axle on full spring deflection. A number of power take-off units, Part No. 640869 Rear Power Take-off Assembly: 647043, Rear Power Take-off Complete Kit: and 640726, Power Take-off Complete Kit, have been sold through our Parts Department in which was not included the necessary Bumper Spacer, Part No. 640207, and the attaching Bolts, Part No. GM100018, 5/16-24x2”. These bumper spacers and attaching bolts are available through the Parts Department and should be installed on all Jeeps in which power take-off installations have been made locally. These spacers and attaching parts are now included in kits furnished by the Parts Department. The necessary bumper spacer has been installed on all Jeeps equipped with Factory installed power take-offs: therefore Jeeps these Jeeps will not require any further attention. Bill |
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uglyjeep
Member Joined: 08 Aug. 2005 Location: Mukwonago, WI Status: Offline Points: 1060 |
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Hi, If you are referring to the regulator, I do have an old one that is likely burned out. It is not the original Auto-lite vrp-4007 but it is an oldie with a steel cover and such. You guys can have it if you want it. I was just keeping it to rebuild some day, but if you can use it now, let me know and I'll mail it off your way. Daniel |
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dclear
Member Joined: 12 July 2006 Location: Milwaukee, wi Status: Offline Points: 927 |
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BTW: these wood shims are so uniformly made and fit so well that I would doubt a farmer/user would have done it. Maybe an after-market supplier. The history of my jeep, which shows only two or three owners suggests, as well, that none of them would have gone to the trouble--although one of the first two DID have all four main spring ends bent upwards apparently to compensate for sagging springs. which may or may not have something to tell us about the reason for the "lifts" on the front.
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del clear
Together we can figure it out, after all, it's only a machine, if a man can build it, a man can fix it. {Author: bkruetz} |
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dclear
Member Joined: 12 July 2006 Location: Milwaukee, wi Status: Offline Points: 927 |
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Daniel--my 2A had/has a rear PTO. Tthat might account for the "shim" on the rear bump-stop, but I don't know of anything that would account for the front wood shims. It did have something in the engine compartment [governor?] since there was an empire tractor bracket of some sort on the cylinder head, and it has still a three groove pulley, which I have yet to be able to explain. I find no evidence of front-mounted stuff such as a winch or hydraulics. My rear floor has NO evidence of even having seen a power lift mechanism, altho there is some metal fatigue on the RH rear cross member where the set of holes that is just inboard of the trailer hitch mounting holes. I don't know what this set of holes, there is a set on both the right and left side, are for.
Do you happen to have a "shot" 6v relay? I know a guy who wants to mount an original looking relay carcass on the fender just for looks, since he is converting to 12, I believe, and will have his "working" regular hidden away somewhere.
del clear
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del clear
Together we can figure it out, after all, it's only a machine, if a man can build it, a man can fix it. {Author: bkruetz} |
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Bill Norris
Member Joined: 01 May 2006 Location: MI Status: Offline Points: 1839 |
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I was at a carshow two years ago and a farmer came up to me that had a '46 2A back in the 40s. He said it was very common to put wood blocks between the frame and the springs because of the bottoming out problem. He said dropping the plow into the dirt just pulled the back end of the Jeep right down. So, I don't know if someone actually sold blocks specifically for a 2A, but that was a 'field fix.'
Bill
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uglyjeep
Member Joined: 08 Aug. 2005 Location: Mukwonago, WI Status: Offline Points: 1060 |
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Hi Del,
Didn't you mention that your Jeep had a 3-point hitch/lift on it, or had one at one time? I am just wondering if the oak front blocks are from certain manufacturer or certain vintage 3-point hitch installations. They would certainly be cheaper than cast ones from a production stand point.
Daniel
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