steerig box troubles

1941 - 1945, MB, GPW Technical questions and discussions, regarding anything related to the WWII jeep.
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ghiltgen
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steerig box troubles

Post by ghiltgen » Wed Mar 21, 2018 6:36 pm

I replaced the worm gear, sector shaft and bearings as part of the steering rebuild. When I put everything together and try to set the tensioner screw, I have one spot of high resistance about 3/4 thru the turning range. When I turn the screw back so it isn't touching and watch the sector shaft, the sector shaft pulls into the box when it gets to that spot. I am interpreting this to mean the worm gear machining isn't uniform and is at fault.
Appreciate any advice about this.

Thanks
ghiltgen
1943 MB SN 226406
Veteran Award, Motorpool Class 2021
GPW 127386
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ghiltgen
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Re: steerig box troubles

Post by ghiltgen » Thu Mar 22, 2018 3:54 pm

Ok thanks!
Greg
ghiltgen
1943 MB SN 226406
Veteran Award, Motorpool Class 2021
GPW 127386
1948 CJ2A
MVPA member 36543

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ghiltgen
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Re: steerig box troubles

Post by ghiltgen » Sat Mar 24, 2018 6:20 pm

I have gone back to the adjustment but I'm confused because that "hard spot" which should represent where the wheels will be in straight ahead position is not in the mid position of the sector shaft travel. I will have about 1.5 wheel revolutions one direction and 2.5 in the opposite direction.
ghiltgen
1943 MB SN 226406
Veteran Award, Motorpool Class 2021
GPW 127386
1948 CJ2A
MVPA member 36543

Joe Gopan
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Re: steerig box troubles

Post by Joe Gopan » Sat Mar 24, 2018 6:28 pm

Did you save the old parts? Am guessing the pitman arm is not installed exactly as it should be. Is your old sector shaft marked with a line on the end and are the indexing marks on the nut side of the arm visible?
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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
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ghiltgen
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Re: steerig box troubles

Post by ghiltgen » Sat Mar 24, 2018 7:00 pm

I saved all the old parts but I did not mark the pitman arm orientation to the sector shaft before disassembly. Right now the pitman arm is off and the box is in the vice as I'm rebuilding it. I had to replace the worm gear due to damage on the shaft and the pitman arm ball is out of round so I am likely going to replace it as well. I have tried the old sector shaft and the new one and get the same result: the "rough spot" is not in the middle of the sector shaft travel.
ghiltgen
1943 MB SN 226406
Veteran Award, Motorpool Class 2021
GPW 127386
1948 CJ2A
MVPA member 36543

User avatar
ghiltgen
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Posts: 422
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Location: Waupaca, Wisconsin

Re: steerig box troubles

Post by ghiltgen » Sat Mar 24, 2018 7:03 pm

I'll have to look for indexing marks on old sector shaft, not sure right now.
ghiltgen
1943 MB SN 226406
Veteran Award, Motorpool Class 2021
GPW 127386
1948 CJ2A
MVPA member 36543

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

Re: steerig box troubles

Post by Joe Gopan » Sun Mar 25, 2018 5:40 am

There is more than one way to skin a cat, copying the marks from the old parts is one way. I pre mark the new parts. Original Made-in-USA replacements were not always marked.
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

OldPappy
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Re: steerig box troubles

Post by OldPappy » Fri Mar 30, 2018 9:48 am

Very useful information, and right on time for me since I am rebuilding the steering on mine in a few days.

Particularly helpful information on adjustments for center.

Will be picking up a NOS front axle (military surplus from the USMC) this evening, so will have new tie rods, and king pins. Rebuilding the bell crank, and drag link this weekend, and will start on the Ross box after that.
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East Tennessee
Shade Tree Mechanic more than 50 years.
None of us are as smart as we pretend to be.


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