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Author Topic: New/Rebuilt Muncie transmission break in  (Read 1220 times)

JGraft

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New/Rebuilt Muncie transmission break in
« on: January 09, 2023, 06:10:59 PM »
Hello CRG experts,

I recently purchased a rebuilt Muncie 4 speed transmission and are reaching out to find out if there is any expert guidance on the break in process for it. Obviously the first step is to fill the transmission to the correct level with recommended lubricant.

1. Should the transmission be started in neutral and allowed to run for some period of time before trying to shift into any of the gears?

2. Is there an order of gear engagement (including reverse) which should be followed as part of the break in process?

3. When should the initial break in lubricant be changed out?

Thx,
Jeff
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ko-lek-tor

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Re: New/Rebuilt Muncie transmission break in
« Reply #1 on: January 10, 2023, 03:46:11 PM »
Make sure you don’t use a synthetic lubricant. I think lube also needs to be a GL5
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Bentley to friends :1969 SS/RS 396 owned 79
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169INDY

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Re: New/Rebuilt Muncie transmission break in
« Reply #2 on: January 10, 2023, 11:32:03 PM »
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Jim
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tomstiel

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Re: New/Rebuilt Muncie transmission break in
« Reply #3 on: January 24, 2023, 07:50:10 PM »
no need to break anything in,,,it either works,,,or it won't
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