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4wd low

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4wd low

Postby andrewward » Fri Nov 19, 2021 3:22 am

hi my MU 1991, has manual lock hubs, I can shift to 4 high but the 4 low does not engage and gears stays in neutral, 4x4 light on dash stays on I have no idea what is going on .
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Re: 4wd low

Postby geeves » Fri Nov 19, 2021 9:54 am

manual or auto? How are you checking the 4wd activation?
Sanding your knuckles before starting work can help. That way you cant skin them
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Re: 4wd low

Postby andrewward » Fri Nov 19, 2021 5:45 pm

its a manual, with the shifter, I put the shifter on 4l and there is no drive, but the dash light is on
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Re: 4wd low

Postby andrewward » Fri Nov 19, 2021 9:47 pm

I put it on neutral, hand brake on, shift to 4l, as I try to put the gas on the car doesn't move
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Re: 4wd low

Postby pig75 » Sat Nov 20, 2021 8:06 am

try taking the rubber boot of the 4wd stick it might be stopping the stick from engaging properly
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Re: 4wd low

Postby andrewward » Sat Nov 20, 2021 5:46 pm

I have made a 2 inch body lift a year ago and fitted a 2 inch extension to the normal stick, but never used the 4wd stick until last week when we had floods everywhere and a lot of mud and debris in the street to navigate. I will do what you said and see how it goes, but there is a strange clicking noise when I drive with the 4wd H as well, thanks
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Re: 4wd low

Postby andrewward » Sat Nov 20, 2021 8:39 pm

I have removed the rubber booth, and the 4WD gear shifts properly now, but there is still a clicking noise coming from the hub lock when driving !
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Re: 4wd low

Postby geeves » Sun Nov 21, 2021 3:31 pm

dont drive on hard surfaces in 4wd. Clicking might be a cv but might also be a free wheel which need taking apart and lubricating
Sanding your knuckles before starting work can help. That way you cant skin them
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Re: 4wd low

Postby andrewward » Sun Nov 21, 2021 5:48 pm

I only use 4wd on dirt or soil, the cvs are ok, guess I need to take the hubs apart and check them out, if there are some damages are there any parts I can replace ? thanks
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Re: 4wd low

Postby geeves » Mon Nov 22, 2021 3:47 pm

Biggest issue is dry grease or rust.
Sanding your knuckles before starting work can help. That way you cant skin them
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Re: 4wd low

Postby andrewward » Sat Nov 27, 2021 10:20 pm

took them apart, it seems that the right hand side one had the spring broken took it to an engineering shop and he fixed it, it is working properly now. Now I found an other issue, there is an annoying noise coming from the rear, it's like a high frequency hum, it is also present when the gear is in neutral ,checked the wheel bearings and breaks, but it seems it is coming from the diff or shaft.
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