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Old 9th March 2012, 23:44   #1
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Default Mitsubishi J26 Jeep KM141 gearbox question

It is getting difficult to change down into 2nd when the box has warmed up. So I am thinking of changing the 4 speed Km141 box or getting it re engineered.

I would appreciate any tips or suggestions people might have.

the engine is the original 2.4 4 cylinder 4G53 ASTRON.
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Old 10th March 2012, 13:26   #2
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Default Re: Mitsubishi J26 Jeep KM141 gearbox question

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Originally Posted by Invicta View Post
It is getting difficult to change down into 2nd when the box has warmed up. So I am thinking of changing the 4 speed Km141 box or getting it re engineered.

I would appreciate any tips or suggestions people might have.

the engine is the original 2.4 4 cylinder 4G53 ASTRON.
Hi Invicta,

This problem is usually attributed to a worn out Synchroniser Cone/Ring, also this problem can be compounded by worn out Gear Box Bearings.

Looks like your JEEP A Gearhead in Need GEARBOX MAGAZINE

As the the oil warms up and thins out, the clearance between the Synchro and Main Gear Shaft increases, worst case the Synchro may jump out (just a little bit)and the gearbox will get stuck in that gear.

You can try using a GL5 85W140 Gear Oil, and see if there is any improvement.

After that you can decide on rebuilding the gearbox or changing it.

Regards,

Arka

PS - Please post some pics of your JEEP.

Last edited by ex670c : 10th March 2012 at 13:27.
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