Joined: Feb 17, 2012 Posts: 530 Location: Del City, OK
Posted: Sat Aug 27, 2016 7:41 pm Post subject: M-38A1 Steering Box Question...
I am in the process of tearing the steering box apart for my M-38A1, I have it down to the box itself and the steering shaft.
Looking at SNL 758, Figure 14-2 Item C - Adapter RG-402141 is pressed into the bottom of the box... This is the part that holds the horn Switch in the Steering box.
Does anyone know if this is the case for sure... I so not want to go banging on it too hard and destroy something that should come out easily...
Thanks in advance... _________________ Hal, KB1ZQ
TSGT, USAF (Ret)
1952 M-38 CDN CAR 52-31313
1952 M-100 Strick #104
1951 Willys Wagon (For Sale)
1954 Willys M38A1 201001205
Tornado Alley
Del City, OK
Joined: Feb 17, 2012 Posts: 530 Location: Del City, OK
Posted: Sun Aug 28, 2016 7:18 am Post subject:
Have looked over that and it does not say anything about removing the piece... _________________ Hal, KB1ZQ
TSGT, USAF (Ret)
1952 M-38 CDN CAR 52-31313
1952 M-100 Strick #104
1951 Willys Wagon (For Sale)
1954 Willys M38A1 201001205
Tornado Alley
Del City, OK
Joined: Feb 20, 2007 Posts: 606 Location: Illinois
Posted: Sun Aug 28, 2016 8:38 am Post subject:
Yes, the tube and bottom flange that allow the horn switch wiring through the steering gear box to the steering column is a press fit. No mechanical attachment other than friction. However, some sealant may have been used to make sure the part doesn't leak oil, so removal may be slightly challenging. Don't use a lot of force - its a fairly delicate part. A little heat may help removal. After cleaning the box up and before reinstalling the tube on my jeeps I used a little Permatex #2. _________________ 1951 M38
The only reason for it's removal is damaged threads or it is leaking through it's pressed fit. If you have neither of these problems why risk damaging it or breaking a chunk of cast iron off the bottom of the box. Really not necessary.
If you want to be sure it doesn't leak plug the middle and pour a wee bit of gas into the cast housing. _________________ Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100
Joined: Feb 17, 2012 Posts: 530 Location: Del City, OK
Posted: Sun Aug 28, 2016 10:03 am Post subject:
Was thinking of taking it off as the steering shaft will not come out of the housing... I know it should but it will not come out... Will need to look this one over some more...
The lower bearings and holder do not want to come loose... bearings are fine but holder appears stuck...
Want to get all of that out so I can blast the housing outside to paint...
Thanks _________________ Hal, KB1ZQ
TSGT, USAF (Ret)
1952 M-38 CDN CAR 52-31313
1952 M-100 Strick #104
1951 Willys Wagon (For Sale)
1954 Willys M38A1 201001205
Tornado Alley
Del City, OK
Joined: Feb 17, 2012 Posts: 530 Location: Del City, OK
Posted: Mon Aug 29, 2016 7:50 pm Post subject:
OK guys, I got the Steering gear box all apart, now looking for some parts...
I can find the Cover gasket 8329725 at several dealers... this is the gasket for the side cover...
But per the SNL, I need 2 7412577 these are the gaskets that go before and after the shims on the steering shaft... I pulled 2 off as the manual shows, but I cannot find anyone carrying the gaskets...
Other than making my own any suggestions...
Thanks _________________ Hal, KB1ZQ
TSGT, USAF (Ret)
1952 M-38 CDN CAR 52-31313
1952 M-100 Strick #104
1951 Willys Wagon (For Sale)
1954 Willys M38A1 201001205
Tornado Alley
Del City, OK
Hal,
I am fixing to start on my steering gear box and have been reading your post. Your problems with finding the gasket caused me to look at it in the diagrams. I found it interesting that the M38A1 takes two 7412577 gaskets while the M38 only took one and that was after serial number 31337. I wonder why the change from apparently no gasket to one gasket to two gaskets. Does it look like oil from the box could migrate up the shaft? I am curious because my serial number on my M38 is 13097. I am curious if I need to consider adding the gaskets since I would guess that the changes came about because of a problem like oil from the box migrating up the shaft. _________________ R G Mutchler
M274A5
M-38 MC13312
http://willysmjeeps.com/v2/modules.php?set_albumName=rgmutchler&op=modload&name=gallery&file=index&include=view_album.php
Yes the early M38 button is hard and the late M38 & M38A1 button is rubber. The early m38 steering mast was secured with only a clamp to the shaft. The later M38 just like the m38A1 had a more complex shim, gasket ball housing arrangement. The M38 ORD 9 qty on the gasket is incorrect. If you look at the illustration on page 259 there are two gaskets.
To answer the post relevant questions the 2nd gasket is required if you are using shims. It is for deep water fording. If you didn't require any shims you only need one gasket.
The gasket pops up quite often using google 7412577, or 5330-00-741-2577, or 804399. No luck with the Ross Gear PN 033092. Several sites offer specs and dimensions:
Quote:
National Stock Number:
5330-00-741-2577
Federal Supply Class:
5330
National Item Identification Number:
007412577
Description:
GASKET
Detail:
A deformable material which prevents the passage of matter through the joint formed when two faces are joined. It may be metallic or nonmetallic, lubricated or impregnated, solid or hollow cross section. It may be made to any predetermined dimension and shape. Excludes flat disks, items made of felt material and items having joints. For round metal and plastic items with an aperture and a solid rectangular cross section, see WASHER, FLAT; SHIM; BEARING, WASHER, THRUST; and SPACER RING. Excludes DISK, VALVE; SEAL, NONMETALLIC ANGLE; SEAL, NONMETALLIC CHANNEL; SEAL, NONMETALLIC SPECIAL SHAPED SECTION; SHIELDING GASKET, ELECTRONIC; and RING, SEALING JAR.
Manufacturer Information:
7412577 19207 U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM
804399 34623 AM GENERAL LLC
Techincal Specification:
APERTURE DIAMETER 1.750 INCHES NOMINAL
BOLT CIRCLE DIAMETER 2.250 INCHES NOMINAL
BOLT HOLE QUANTITY 3
CROSS-SECTIONAL SHAPE STYLE SOLID SINGLE OR COMPOSITION
CROSS-SECTIONAL THICKNESS 0.008 INCHES MINIMUM AND 0.010 INCHES MAXIMUM
HOLE DIAMETER 0.328 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATION MIL-G-12803,NO. +3313B MIL SPEC ALL MATERIAL RESPONSES OVERALL
MATERIAL PAPER OVERALL AND GLUE OVERALL
OUTSIDE CORNER RADIUS 0.312 INCHES NOMINAL
SIDE RADIUS FROM GASKET CENTER 1.125 INCHES NOMINAL
OVERALL WIDTH 2.500 INCHES NOMINAL
STYLE DESIGNATOR NON-CIRCULAR
Joined: Feb 17, 2012 Posts: 530 Location: Del City, OK
Posted: Tue Aug 30, 2016 4:40 pm Post subject:
I sent an email to John Bizal and he has the gaskets available... Will be ordering a couple later this week...
Just got done sandblasting the body and paintable portions... need to mask off some parts but will be ready to rebuild after the parts arrive...
Working on a budget makes it tough some times... _________________ Hal, KB1ZQ
TSGT, USAF (Ret)
1952 M-38 CDN CAR 52-31313
1952 M-100 Strick #104
1951 Willys Wagon (For Sale)
1954 Willys M38A1 201001205
Tornado Alley
Del City, OK
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