Question: Steering Knuckle Paint

1941 - 1945, MB, GPW Technical questions and discussions, regarding anything related to the WWII jeep.
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Chance
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Question: Steering Knuckle Paint

Post by Chance » Tue Oct 25, 2016 1:32 pm

KNUCKLE, steering, left (SP-17222)
WO-A-812 FM-GP-3149-A
KNUCKLE, steering, right (SP-17221)
WO-A-811 FM-GP-3148-A

Am I correct in that these steering knuckles where painted:

1. primed inside and out; OD on outside only.

or

2. primed outside only; OD on outside only.


Thanks
Chance
1943 - January | Willys MB "Skimpy" | Frame No. #203301
1943 - January | Willys MB-T | Serial No. 21488


dinof
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Re: Question: Steering Knuckle Paint

Post by dinof » Tue Oct 25, 2016 1:53 pm

I never paint the inside of anything that gets oil dipped in it constantly. I know all the "experts" paint their trannys on the inside, I'd rather leave it like the factory had it. No need for paint to come off for some reason and pollute the gears, bearings, shift levers.
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Re: Question: Steering Knuckle Paint

Post by dpcd67 » Tue Oct 25, 2016 2:25 pm

Glyptol.
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Re: Question: Steering Knuckle Paint

Post by Joe Gopan » Tue Oct 25, 2016 2:45 pm

The CV Joint housing was not painted inside or out on Jeeps when they left the factory. The lube inside does a good job of protecting, and the wiper seals both wipe the ball clean and leave a very light smear on the outside of the ball.
It doesn't do any harm periodically on jeeps that are parked for extended periods to take a bucket of Diesel oil and a parts cleaning brush to them and some coarse steel wool to brighten up the ball.
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Re: Question: Steering Knuckle Paint

Post by Chance » Tue Oct 25, 2016 2:54 pm

Okay, thanks. So the inside was NOT painted from the factory.

I will not paint it either.
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1943 - January | Willys MB-T | Serial No. 21488

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Re: Question: Steering Knuckle Paint

Post by Joe Gopan » Tue Oct 25, 2016 2:56 pm

Read your operators section of TM9-803, it may have suggestions on what to do after certain types of operation.
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Re: Question: Steering Knuckle Paint

Post by dpcd67 » Wed Oct 26, 2016 11:58 am

Actually, I have painted over the balls; the felt wipers do work over paint, and it doesn't rust. I did that on a Power Wagon. Still on there after 20 years.
I never paint the inside of anything either; I know some do paint insides of transmissions.
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Re: Question: Steering Knuckle Paint

Post by Joe Gopan » Wed Oct 26, 2016 2:03 pm

And you will find that MB's and larger MV's along with Construction equipment and the commercial truck industry use a special red oxide like paint, and Glyptal could be found in rebuilt gearboxes by Ordnance. It seals porosity in the engine blocks and gearboxes to eliminate oil seepage, and helps lubricant circulation by providing a smooth surface.
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Re: Question: Steering Knuckle Paint

Post by dinof » Wed Oct 26, 2016 3:13 pm

Joel,
I never bought the statement about stopping porosity in the engine block. The day I have a motor that leaks oil out of a cast iron piece of my motor, I will sell my vehicles and sit in a corner. And oil flow does not increase with gyptal. After the oil has sat in a trans housing or engine block, the oil is on the surface and other oil that flows on it, just flows on down as well. Just another waste of time/money. Too many wives tales.
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Re: Question: Steering Knuckle Paint

Post by Joe Gopan » Wed Oct 26, 2016 5:19 pm

I practice it and have a feeling it does good. Somewhere since the 50's I learned this stuff. Also it is evident in gear cases of Euro return MV's that have been thru rebuild, Glyptal appears to be in widespread use.
2011 MVPA PIONEER AWARD - MVPA #1064
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Re: Question: Steering Knuckle Paint

Post by dpcd67 » Thu Oct 27, 2016 8:00 am

Cool; I will keep painting the outsides of the knuckles.
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Re: Question: Steering Knuckle Paint

Post by Chance » Thu Oct 27, 2016 1:13 pm

Thanks guys. This helpful too because we're (my ten year old really, not me) rebuilding a transfer case so this applies as well.
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Re: Question: Steering Knuckle Paint

Post by Beers » Thu Oct 27, 2016 5:41 pm

Chance wrote:Thanks guys. This helpful too because we're (my ten year old really, not me) rebuilding a transfer case so this applies as well.
Chance, when I went through my early '43 MB transfer case, the pan had a "glyptol" like coating applied to it. The inside of the case was bare. Certainly could have been applied post-military, but the case internals looked all original (including the intermediate shaft, which is often one of the first pieces replaced). I think others may have found the same, but not stating this was factory. Just interesting.

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Re: Question: Steering Knuckle Paint

Post by dpcd67 » Thu Oct 27, 2016 6:00 pm

That is also interesting because the pan is not where it needs to be; it might be useful on the iron housings, but not the steel pan.
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