. . (01 Nov 2019)
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Vacuum hubs trying to engage

24 Jun 2019 17:05 #210266 by Hugo
Hi All

When driving my 2001 Jimny convertible I get a sound along the lines of the free wheeling hubs trying to engage at speed, I try and reduce speed as quickly as safety will allow, dipping the clutch and braking, I then hear the noise stop and a slight clunk on the drive train (always feels like offside front ‘engaging’)’ the noise stops. It appears to do this each time I start off from a parked position, the time it takes varies, the first mile or sometimes 5 to 10 miles into the journey. I did take a hub off on that side some time ago, there were no apparent faults and I bolted it back up after applying some more grease. As this problem has happened a number of times I am expecting the worse when I do get to strip the hub and half shaft down to try and diagnose the problem.

Before I do, does anyone have any ideas as to what might be the cause and if there is damage is it time to fit manual freewheeling hubs when I start the repairs?

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24 Jun 2019 17:42 #210270 by Lambert
As a fanboy of manual hubs I would suggest fitting them as opposed to trying to chase the fault with the vacuum ones.

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24 Jun 2019 20:40 #210282 by kirkynut
To diagnose the problem as the vacuum hubs once and for all, whip them off and drive it with no hubs on. If the noise is gone, make them paperweights and buy manual hubs.

Or follow my guide at the top of the Technical Section to turn your hubs into fixed hubs, or read the Wiki version.

The vacuum ones are a wind up otherwise!


The underdog often starts the fight, and occasionally the upper dog deserves to win - Edgar Watson Howe.

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