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Naugha Member
Joined: Apr 01, 2020 Posts: 409 Location: Ocala, Florida
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Posted: Mon Mar 29, 2021 3:35 pm Post subject: Ross Steering Box |
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My M38 came with a Ross steering box that looked like it had been there from day one .... but nope, it has a 7/8" diameter sector shaft and casting numbers that match a MB in one of the G503 videos.
Is this an MB box .... and how does this level of nonconformity affect a 'motorpool' rebuild status for an M38?
_________________ Don Alvarez
Retired HS Teacher
Central Florida
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Mike_B Member
Joined: Dec 10, 2017 Posts: 337 Location: Southern Maryland
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Posted: Mon Mar 29, 2021 8:37 pm Post subject: |
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A quick web search shows the T122998 box as fitting the Willys FC-150/170.
Mike B _________________ Mike B
1953 M38A1 Brush Truck
1952 M38
1951 M100 Trailer |
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Naugha Member
Joined: Apr 01, 2020 Posts: 409 Location: Ocala, Florida
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Posted: Tue Mar 30, 2021 6:51 am Post subject: |
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The box is actually #T122988 which does not appear on the chart I was using.
I guess the main issue really gets back to the ‘motor pool’ concept. My M38 barn find came with many origional parts, good body, frame, 24v system, T-90 trans, found a good MC engine .... so down the ‘motor pool’ path went my thoughts without ever being subjected to a MVPA scoring sheet. I may never enter a judging event but do want to ‘get it done right’.
The M38 is going to look great and be very ‘authentic’ .... but how far from ‘perfect’ can my parts selection stray ??? What are the motor pool ‘deal breakers’?
At this point, the major Non-M38 components I know of are:
Wrong carb. (WO)
Wrong Ross steering box
Wrong spare tire bracket (M38a1)
No fording equipment (don’t think it had any) _________________ Don Alvarez
Retired HS Teacher
Central Florida
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wesk Site Administrator
Joined: Apr 04, 2005 Posts: 16250 Location: Wisconsin
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Posted: Tue Mar 30, 2021 8:04 am Post subject: |
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If you enter a scored resto competition that uses the common classes, Factory, Motor Pool. Then the gear box will cost you points in either category.
You and only you can decide how perfect a resto your want and how much money you want to spend.
Quote: | so down the ‘motor pool’ path went my thoughts without ever being subjected to a MVPA scoring sheet. I may never enter a judging event but do want to ‘get it done right’. |
This smacks of too much either side of the fence.
Quote: | No fording equipment (don’t think it had any) |
You don't think it had any of the Fording Kit (Bolt on external inlet and exhaust stack) or you don't think it was equipped with any underwater vent system components? All M38's left Willys with one of two different Underwater Vent Systems. Early & late. None left Willys with the external Fording Kit. These were stored at motor pools and issued for use in the field. _________________ Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100
Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php |
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wesk Site Administrator
Joined: Apr 04, 2005 Posts: 16250 Location: Wisconsin
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Posted: Tue Mar 30, 2021 8:20 am Post subject: |
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One must be cautious when choosing part numbers for the Ross Steering Gear.
Quote: | The box is actually #T122988 which does not appear on the chart I was using. |
T122988 is the casting number for that housing before it was machined. For a WWII Ross MB steering gear the machined housing was Ross Gear PN 503284. The complete gear box assembly (less strg wheel) with the internal gears was Ross Gear PN T13086.
For the M38 which steering gear assembly depends on early M38 before sn 31338 or late after sn 31337.
Early Ross Gear PN TA13077
Late Ross Gear PN TA13084 _________________ Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100
Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php |
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4x4M38 Member
Joined: May 30, 2014 Posts: 3447 Location: Texas Hill Country
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Naugha Member
Joined: Apr 01, 2020 Posts: 409 Location: Ocala, Florida
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Posted: Tue Mar 30, 2021 3:50 pm Post subject: |
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Late Ross Gear PN TA13084 would be appropriate for my M38 but they must be sleeping with the dinosaurs.
As for T122988 .... an image search will find a few but the folks with the part just say it will fit everything including a Mac Truck.
In fact .... parts I see available for Jeep xyz are usually not original ...... they just happen to fit Jeeps xyz.
Right now on Flea Bay a fellow has a “NOS M38 Ross housing” .... except that it’s NOT.😁 _________________ Don Alvarez
Retired HS Teacher
Central Florida
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Mike_B Member
Joined: Dec 10, 2017 Posts: 337 Location: Southern Maryland
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Posted: Tue Mar 30, 2021 9:23 pm Post subject: |
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Mike_B wrote: | A quick web search shows the T122998 box as fitting the Willys FC-150/170.
Mike B |
I typed the number wrong, I meant to say T122988 as showing up as the FC box.
How long is the worm/shaft? Does it have the steering wheel in the correct location?
Mike B _________________ Mike B
1953 M38A1 Brush Truck
1952 M38
1951 M100 Trailer |
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Naugha Member
Joined: Apr 01, 2020 Posts: 409 Location: Ocala, Florida
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Mike_B Member
Joined: Dec 10, 2017 Posts: 337 Location: Southern Maryland
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Posted: Wed Mar 31, 2021 9:20 am Post subject: |
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Naugha wrote: | Steering wheel location?.... is that a jeep joke?
....It’s hanging on my barn wall. 😁 |
I should have worded it differently, not meant to be a joke, but who knows!
The Cam/Worms and the actual shaft welded to the Cam/Worm come in many lengths for different applications putting the steering wheel closer or further from the dash. The gear ratio can also be different.
Mike B _________________ Mike B
1953 M38A1 Brush Truck
1952 M38
1951 M100 Trailer |
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Naugha Member
Joined: Apr 01, 2020 Posts: 409 Location: Ocala, Florida
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Posted: Wed Mar 31, 2021 1:40 pm Post subject: Shaft & Worm |
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Shaft= 37”
Worm= 4 1/4”
Sector Shaft diameter = 7/8”
Maybe drop in the proper kit and move on to higher ground.
Hmm. Would any of the 7/8” kits work? _________________ Don Alvarez
Retired HS Teacher
Central Florida
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wesk Site Administrator
Joined: Apr 04, 2005 Posts: 16250 Location: Wisconsin
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Ryan_Miller Site Administrator
Joined: Apr 03, 2005 Posts: 1634 Location: Kansas
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Posted: Thu Apr 01, 2021 7:17 am Post subject: |
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I would say that you could contact one of the jeep suppliers and get a rebuilt box of your choice, they may have some use for yours and get some kind of a core charge back.
Worth calling around.
I am glad the book is helping to identify parts and hopefully save you time and money! _________________ Ryan Miller
MVPA # 22010 |
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