Allen key size for front hubs 1.6 1998 vitara - Suzuki Forums: Suzuki Forum Site
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Old 02-16-2017, 04:30 AM   #1 (permalink)
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Default Allen key size for front hubs 1.6 1998 vitara

Hi everyone
Hi everyone, I've had my beast now nearly a year and love him to bits, don't know anyone where I now live to help when I get stuck and this site has helped me in the past so thought it about time I joined. Quick question if anyone can help, I've searched the forum already, what size Allen key are the bolts on the front hubs of a 98 vitara, they are manual hubs.
Thank you in advance ??
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Old 02-16-2017, 10:30 AM   #2 (permalink)
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Try a 6mm & welcome.
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1997 Geo Tracker, 2dr convertible/hardtop, 1.6, 16v, 5 spd manual, 4wd
1995 Geo Tracker, 2dr convertible/hardtop, 1.6, 16v, 3 spd auto, 4wd
1992 Geo Tracker LSI, 2 dr convertible, 1.6, 8v, 5 spd manual, 4wd
1991 Geo Tracker, 2dr hardtop (TT), 1.6, 8v, 3 spd auto, 4wd

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Old 02-16-2017, 03:02 PM   #3 (permalink)
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Hi ranger thank you, I've tried 6mm it seems too big, 5.5mm fits but is just a tiny bit small, so when pressure is applied it does just moves without moving the bolt. I even tried imperial sized Allen keys and no joy. This is why I thought about posting on here, if I have to buy more tools to fix it I want to get the right ones. If it's definitely a 6mm I'll buy a socket fitting and tap it in with a hammer lol 😁

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Old 02-16-2017, 03:14 PM   #4 (permalink)
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All the Geo Trackers (AKA Suzuki Sidekick) Aisin manual hubs I have removed were 8mm x 1.25 (thread pitch) with 6mm (allen) socket head bolts or 12mm hex cap bolts. Possibly corrosion/rust is inhibiting the insertion of the 6mm allen wrench. BTW, I use a long reach ball end 6mm allen wrench with a vinyl hose over the length, to prevent scratching and marring of the hub. Good luck.
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1997 Geo Tracker, 2dr convertible/hardtop, 1.6, 16v, 5 spd manual, 4wd
1995 Geo Tracker, 2dr convertible/hardtop, 1.6, 16v, 3 spd auto, 4wd
1992 Geo Tracker LSI, 2 dr convertible, 1.6, 8v, 5 spd manual, 4wd
1991 Geo Tracker, 2dr hardtop (TT), 1.6, 8v, 3 spd auto, 4wd

1989 Ford E-250, van, 5.0 (302), 4 spd auto
1988 Ford Ranger, p/u, 2.9, 3pd auto
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Old 02-16-2017, 03:26 PM   #5 (permalink)
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Here's what I use, with vinyl hose over the shaft:

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1997 Geo Tracker, 2dr convertible/hardtop, 1.6, 16v, 5 spd manual, 4wd
1995 Geo Tracker, 2dr convertible/hardtop, 1.6, 16v, 3 spd auto, 4wd
1992 Geo Tracker LSI, 2 dr convertible, 1.6, 8v, 5 spd manual, 4wd
1991 Geo Tracker, 2dr hardtop (TT), 1.6, 8v, 3 spd auto, 4wd

1989 Ford E-250, van, 5.0 (302), 4 spd auto
1988 Ford Ranger, p/u, 2.9, 3pd auto
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Old 02-16-2017, 04:03 PM   #6 (permalink)
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Does it have the OEM Aisin free wheel hubs fitted?

A quick look at the parts catalog suggests that free wheel hubs were optional in the UK market, and if it's an after-market hub, there's a possibility that it may use torx bolts rather than allen.
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Old 02-16-2017, 04:31 PM   #7 (permalink)
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I bought it with manual hubs, I had a noise coming from the off side wheel, thought it was the bearing as only made a noise when temp dropped, once warm nothing. Weather got better noise disappeared, I did notice that the car had "slowed" down when driving. The 4wd light isn't on!! Took it for it mot, the mechanic passed it because "he couldn't do most of the test because it was stuck in 4wd". So working on cheapest 1st, I've not serviced the hubs so that needs doing, then I know through this site, that there is something in the gearbox that may have slipped out, but I can't do that so it's a garage job. I'm hoping it's something to do with the hubs, which I can do. I will have a look at the torx fitments, I have some but not the right size tbh if my Allen keys don't fit process of elimination must mean they are torx. Thank you for the pic, got a feeling I'll be smacking it with a hammer lol 😁

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Old 02-17-2017, 08:15 AM   #8 (permalink)
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Strangely, my hubs use a 3/16 Allen wrench or the mm equivalent - they are Aisin's from a UK vitara....However, I'm confused about the mechanic saying that your car is 'stuck' in 4wd. You're really not in 4wd unless the hubs are locked and the transfer case is in 4wd.....Presumably your transfer case lever is in 2wd, and you can go to 4L and 4H with the lever?? Do you have manual or auto locking hubs??
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Old 02-17-2017, 08:34 AM   #9 (permalink)
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Quote:
Originally Posted by Bex View Post
Strangely, my hubs use a 3/16 Allen wrench or the mm equivalent - they are Aisin's from a UK vitara....However, I'm confused about the mechanic saying that your car is 'stuck' in 4wd. You're really not in 4wd unless the hubs are locked and the transfer case is in 4wd.....Presumably your transfer case lever is in 2wd, and you can go to 4L and 4H with the lever?? Do you have manual or auto locking hubs??
Hi Bex, transference box is in 2H thats why the 4wd light isn't on. It's Def in 4wd because the engine sound is different, it's slower than it used to be, not to mention the fuel consumption is more. Plus when wet if I put my foot down on a corner the front wheels spin....... I took the plastic cap off the locking hubs and they're dry as anything 😱 tbh I don't even think the person who owned before me serviced the hubs. I've not taken it off road yet, I only engaged the hubs in 4wd when It snowed to get to work. Ever since its been driving different.
Either way, the hubs (manual hubs) need servicing, i have a feeling it's not just the hubs as changing gear now is getting stiffer too. I'm going to do the hubs this weekend so fingers crossed lol


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Old 02-17-2017, 08:56 AM   #10 (permalink)
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I find that with my hubs locked, the car does feel a bit slower - or doesn't 'roll' as well, and the mileage suffers. There's a great video on the forum, post #5 here, where the guy services the hubs completely. He does it with one hand, while holding a camera with the other, so no excuses!:
http://www.suzuki-forums.com/suzuki-...nual-hubs.html

If all you are doing is the locking mechanism, this is a pretty good write up, as well.
Manual Hub Clutch Assembly

How did you finally get the locker off??
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