yamtz750

2000 Suzuki King Quad LT-F300 4X4 Rear Axle/Wheel Locks-up

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The rear axle and wheels intermittently locks up as if the rear transmission is seized. The problem just started happening. The problem comes and goes; seems to mysteriously go away until it happens again.

Any help would be appreciated.

2000 Suzuki King Quad LT-F300 4X4

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I would start by inspecting the rear brakes and draining the oil in the rear diff, check for any metal debris. It sounds to me like there is something floating around in the rear diff and getting jammed between the ring and pinion. I think a rear brake problem is less likely, but still plausible.

Is that machine full time 4wd? If so, I find it odd that the problem only affects the rear wheels unless you have a disconnect on the front driveline.

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That quad has multiple shifters, right?

Make sure you have no bent linkage on that that thing or that it is not fully engaging/disengaging.

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Thanks for reading and replying to my post.

4x4 is selectable by lever. The linkages are in good condition and operate smoothly. Rear trans oil has no obvious metal flake, etc... U-joints appear to be in good condition. Brakes appear to be in good condition. Trying to locate the service manual now.

Yam

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That machine has a very strange drive system, the tranny is pretty much geared directly to the rear end. The front wheels are driven off of a set of bevel gears that run a drive shaft that runs up to the front diff. Your problem could be in one of the gear boxes, I would think it more likely to be the secondary box where the final drive gears are. I would say the same thing, drain the oil out and look for metal debris. You also might want to inspect all of the u-joints in the drive train, if one of them is binding up, it could lock every thing up.

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Just had this happen to a buddy of mine the other night. Rear wheels locked right up, no metal in the fluid, took the case off both sides and it was clean, gears and such look good. The case was way low on oil. The only thing I can figure is it is in the HIGH-LOW-SUPER LOW gear set. The center gear at the inside of the case, held in by a c-clip, is seized to the shaft, as far as I can tell it should spin. It is also not lined up with the dog on the splines. Has anyone hear of this happening?

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Never heard of it that specific thing happening, but heat siezure of gears is not uncommon. It seems like it could certainly be the cause of the wheel lockup.

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all Iremember on those king quad 300 was the revers drive bearing can start siezing

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