Huge Warning My Friends!!!!!!!!

1941 - 1945, MB, GPW Technical questions and discussions, regarding anything related to the WWII jeep.
gmcjr
G-Sergeant Major
G-Sergeant Major
Posts: 184
Joined: Fri Feb 15, 2013 6:57 pm
Location: N. Texas

Re: Huge Warning My Friends!!!!!!!!

Post by gmcjr » Thu Sep 29, 2016 5:57 pm

I saw both sheared shafts at the Fall Colors Tour in Colorado, scared the you know what out of me! Both shafts had identical failures.


danover321
Sergeant Major of the Gee
Sergeant Major of the Gee
Posts: 481
Joined: Tue Jul 17, 2007 8:31 am
Location: Kansas City, Missouri

Re: Huge Warning My Friends!!!!!!!!

Post by danover321 » Fri Sep 30, 2016 4:49 am

Hello again everyone, I just wanted to point out that many online merchants and Ebay sellers don't stock the sector shafts in-house. Orders are simply drop shipped from OMIX-ADA upon receipt. Don't expect any redaction of the listings any time soon.

Lew Ladwig
G-Major General
G-Major General
Posts: 3092
Joined: Wed Dec 25, 2002 6:58 pm
Location: Lafayette, Colorado

Re: Huge Warning My Friends!!!!!!!!

Post by Lew Ladwig » Fri Sep 30, 2016 12:53 pm

Is this a good safe shaft?
Image

Image

Thanks,
Lew
Lew Ladwig
CMHG, 9th ID, Commander
BSA Crew 42 Advisor, 9th ID reenactors
CFFC, IFFC president
2-'47 cj2a's
1-'45 gpw in full resto mode

Joe Gopan
Jeep Heaven
Posts: 49841
Joined: Sun Mar 02, 2008 12:37 pm
Location: Proving Ground

Re: Huge Warning My Friends!!!!!!!!

Post by Joe Gopan » Fri Sep 30, 2016 2:56 pm

Joe Friday describes the contact area as a thrust insert with no weld around it. In your photo, Lew, there is something on the machined surface of that insert, is that a drop of lubricant?
As far as being safe, there is no welding evident and it appears to have the insert which is comforting as it does not appear to have the features of the Omix product.
2011 MVPA PIONEER AWARD - MVPA #1064
HONOR GRAD-WHEELED VEHICLE MECHANIC SCHOOL 1960 - US ARMY ORDNANCE SCHOOL(MACHINIST) ABERDEEN PG 1962 - O-1 BIRD DOG CREWCHIEF - 300,000+TROUBLE FREE M-38A1 MILES
LIFE MEMBER AM LEGION-40/8-DAV
7 MIL SPEC MAINTAINED MV'S
COL. BRUNO BROOKS (ARMY MOTORS) IS MY HERO

Lew Ladwig
G-Major General
G-Major General
Posts: 3092
Joined: Wed Dec 25, 2002 6:58 pm
Location: Lafayette, Colorado

Re: Huge Warning My Friends!!!!!!!!

Post by Lew Ladwig » Fri Sep 30, 2016 4:05 pm

Ben,
That is just a drop of oil where the adjustment bolt pushes. The surface is smooth there. I believe I have a good one.
Lew Ladwig
CMHG, 9th ID, Commander
BSA Crew 42 Advisor, 9th ID reenactors
CFFC, IFFC president
2-'47 cj2a's
1-'45 gpw in full resto mode

Joe Gopan
Jeep Heaven
Posts: 49841
Joined: Sun Mar 02, 2008 12:37 pm
Location: Proving Ground

Re: Huge Warning My Friends!!!!!!!!

Post by Joe Gopan » Fri Sep 30, 2016 8:07 pm

My opinion also.
This has to be the first notable red flag concerning aftermarket replacement parts on the MB.
2011 MVPA PIONEER AWARD - MVPA #1064
HONOR GRAD-WHEELED VEHICLE MECHANIC SCHOOL 1960 - US ARMY ORDNANCE SCHOOL(MACHINIST) ABERDEEN PG 1962 - O-1 BIRD DOG CREWCHIEF - 300,000+TROUBLE FREE M-38A1 MILES
LIFE MEMBER AM LEGION-40/8-DAV
7 MIL SPEC MAINTAINED MV'S
COL. BRUNO BROOKS (ARMY MOTORS) IS MY HERO

Zoidberg
G-Private
G-Private
Posts: 4
Joined: Thu Feb 13, 2014 11:17 am
Location:

Re: Huge Warning My Friends!!!!!!!!

Post by Zoidberg » Sat Oct 01, 2016 10:22 am

Looking at the pictures I think the problem is that it's made from two seperate pieces, while originals and correct reproductions are forged in one piece.

Image

m3bobby
G-First Lieutenant
G-First Lieutenant
Posts: 608
Joined: Mon Jul 06, 2015 11:13 am
Location:

Re: Huge Warning My Friends!!!!!!!!

Post by m3bobby » Sat Oct 01, 2016 11:38 pm

I had already posted a reply which appears to have vanished!

Anyway, in my opinion the give away is that the faulty sector appears to be made from sheet steel and the shaft from bar stock. A good repro will be cast, the cast in part numbers and casting lines are a good sign.
Ford GPW 6008, in slow process of restoration.

User avatar
Joe Friday
G-Colonel
G-Colonel
Posts: 1229
Joined: Tue Dec 14, 2010 10:28 am
Location:

Re: Huge Warning My Friends!!!!!!!!

Post by Joe Friday » Sun Oct 02, 2016 5:22 am

Forged, not cast.
2018 MVPA PIONEER AWARD - MVPA #419

Joe Gopan
Jeep Heaven
Posts: 49841
Joined: Sun Mar 02, 2008 12:37 pm
Location: Proving Ground

Re: Huge Warning My Friends!!!!!!!!

Post by Joe Gopan » Sun Oct 02, 2016 5:38 am

Welding at the end of the shaft is also a dead giveaway. Do not install it. Hopefully there will be feedback on how this is being handled.

This is serious business.
Not sure if this manufacturer is supplying Sector Shafts for other style Jeeps using the Ross Lever and Twin Pin shafts design. M-38A1, M-38, CJ-5 with V-6, and the older style 40's-62' Jeep Trucks and wagon use the same type but with a larger diameter shaft.
2011 MVPA PIONEER AWARD - MVPA #1064
HONOR GRAD-WHEELED VEHICLE MECHANIC SCHOOL 1960 - US ARMY ORDNANCE SCHOOL(MACHINIST) ABERDEEN PG 1962 - O-1 BIRD DOG CREWCHIEF - 300,000+TROUBLE FREE M-38A1 MILES
LIFE MEMBER AM LEGION-40/8-DAV
7 MIL SPEC MAINTAINED MV'S
COL. BRUNO BROOKS (ARMY MOTORS) IS MY HERO

User avatar
Navarre
G-Colonel
G-Colonel
Posts: 1387
Joined: Wed Oct 12, 2011 7:54 am
Location: Canary Islands, Spain

Re: Huge Warning My Friends!!!!!!!!

Post by Navarre » Sun Oct 02, 2016 2:47 pm

Hello and thanks for the info.

I´m worried now...I´m not sure if mine could be OMIX-Ada. I have been comparing pics and the casting part on mine looks sightly different than the part on th OMIX-Ada one (I think).

OMIX Ada from internet has rounded edges
Image

Mine has sharp edges:
Image

Opinions, please?

Thanks
"Praise the Lord and pass the ammunition"
Ford GPW 86534 DoD 12-11-42...in progress!
Resto thread: viewtopic.php?f=144&t=198728

Joe Gopan
Jeep Heaven
Posts: 49841
Joined: Sun Mar 02, 2008 12:37 pm
Location: Proving Ground

Re: Huge Warning My Friends!!!!!!!!

Post by Joe Gopan » Sun Oct 02, 2016 3:23 pm

Can you take a pic of the side that is in contact with the adjusting screw?
2011 MVPA PIONEER AWARD - MVPA #1064
HONOR GRAD-WHEELED VEHICLE MECHANIC SCHOOL 1960 - US ARMY ORDNANCE SCHOOL(MACHINIST) ABERDEEN PG 1962 - O-1 BIRD DOG CREWCHIEF - 300,000+TROUBLE FREE M-38A1 MILES
LIFE MEMBER AM LEGION-40/8-DAV
7 MIL SPEC MAINTAINED MV'S
COL. BRUNO BROOKS (ARMY MOTORS) IS MY HERO

User avatar
Navarre
G-Colonel
G-Colonel
Posts: 1387
Joined: Wed Oct 12, 2011 7:54 am
Location: Canary Islands, Spain

Re: Huge Warning My Friends!!!!!!!!

Post by Navarre » Sun Oct 02, 2016 3:38 pm

Ben Dover wrote:Can you take a pic of the side that is in contact with the adjusting screw?
Sure, I´ll have to open the box. Thanks
"Praise the Lord and pass the ammunition"
Ford GPW 86534 DoD 12-11-42...in progress!
Resto thread: viewtopic.php?f=144&t=198728

Joe Gopan
Jeep Heaven
Posts: 49841
Joined: Sun Mar 02, 2008 12:37 pm
Location: Proving Ground

Re: Huge Warning My Friends!!!!!!!!

Post by Joe Gopan » Sun Oct 02, 2016 3:47 pm

Thanks, this should give you positive ID.
2011 MVPA PIONEER AWARD - MVPA #1064
HONOR GRAD-WHEELED VEHICLE MECHANIC SCHOOL 1960 - US ARMY ORDNANCE SCHOOL(MACHINIST) ABERDEEN PG 1962 - O-1 BIRD DOG CREWCHIEF - 300,000+TROUBLE FREE M-38A1 MILES
LIFE MEMBER AM LEGION-40/8-DAV
7 MIL SPEC MAINTAINED MV'S
COL. BRUNO BROOKS (ARMY MOTORS) IS MY HERO

Fortyeight2A
G-Lieutenant General
G-Lieutenant General
Posts: 4991
Joined: Sat Jun 10, 2006 11:40 pm
Location: Colorado

Re: Huge Warning My Friends!!!!!!!!

Post by Fortyeight2A » Sun Oct 09, 2016 6:34 pm

Rodrigo, yours appears to be a two-piece shaft. This does not necessarily mean it's bad, but I'd take a really close look at the area where the shaft and the "other piece" join, which is hidden by the bushing in your photo. The failure-prone shafts had a square corner inside the "other piece" where the shaft is necked down to fit inside, whereas the originals, being one-piece forgings, had a radius at the point where the shaft extends from the "other piece".

On a related note, I bought a sector shaft from J C Whitney back in 2000 and I installed it in my Ross box last year. I don't think it is welded like the Omix shafts, but it didn't have an adequate radius in that joint, in my recollection. I may need to open the steering box and check it out, too.
Is it true real Jeeps have flat fenders?
Alone cannot you it resist!


Post Reply

Return to “MB GPW Technical Knowledge Base”

Who is online

Users browsing this forum: Baidu [Spider], dinof, DogDoc, Google [Bot], Google Adsense [Bot], harve, maurywhurt, MB210581 and 75 guests