Boomerang front drive problem

[Dougan]

Hi Guys,

Me again! I have finally put power to the Boomerang and yet again another snag. The right side wheel (looking head on) does not rotate very well. I have noticed that the bottom suspension arm rests against the inside of the wheel rim, is this normal? When I move the arm away from the rim it turns ok, but as soon as it rubs against it, it stops. I wouldn't think that the slight rubbing would have been enough to stop it turning.

When I rotate the other front wheel by hand, the drive shaft turns the back wheels. When I do the same to the suspect wheel, the drive shaft does not turn, only the other front wheel. Could this be a diff. problem? I stripped the gearbox and everything looked ok, but I am no expert!

[screwbag]

that lower arm should not be hitting the rim. when I got my boomer the lower arm was almost worn through from hitting the rim, so I replaced the arms and everything is fine. This rubbing is almost surely caused by worn out front end parts, or the front rim is warped. your gears sound fine to me. While I have your attention do you happen to have a spare drive gear for that car? I stripped mine a couple of weeks ago and can't find a replacement.thanks hope this info helps.

[Twmaster]

I would disassemble the front diff and make sure you don't have a damaged or severely worn diff. While apart it would also be a great time to clean and relube the gears.

[Dougan]

Hi Screwbag,

Many thanks for the information, much appreciated.

Sorry I can't help you with the drive gear.

Cheers

Dougan

quote:

Originally posted by screwbag

that lower arm should not be hitting the rim. when I got my boomer the lower arm was almost worn through from hitting the rim, so I replaced the arms and everything is fine. This rubbing is almost surely caused by worn out front end parts, or the front rim is warped. your gears sound fine to me. While I have your attention do you happen to have a spare drive gear for that car? I stripped mine a couple of weeks ago and can't find a replacement.thanks hope this info helps.

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[Dougan]

Hi Mike,

I stripped and lubed the gearbox as part of the rebuild, and also stipped it again to double check. Every thing looks ok, but this is all new to me, first rebuild and that. The diff looks ok, all gears and cogs look pretty wear free, but I wouldn't know the difference between a good and worn one!

Dougan

quote:

Originally posted by Twmaster

I would disassemble the front diff and make sure you don't have a damaged or severely worn diff. While apart it would also be a great time to clean and relube the gears.

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[DJTheo]

The rubbing of the arm to the wheel is usually caused by a worn ball head of the steering knuckle or a its plastic casing in the arm which is worn, usually both.

For the diff except the cleaing and relubing, check if there is a thin axle between in the diff gear, it can easily fall out if you remove one of the dogbones. Also replace worn gears and replace plastic bearing with ball bearings.

Cheers

[terry.sc]

quote:

Originally posted by Dougan

Hi Guys,

When I rotate the other front wheel by hand, the drive shaft turns the back wheels. When I do the same to the suspect wheel, the drive shaft does not turn, only the other front wheel. Could this be a diff. problem?

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This will be caused by the wheel rubbing against the wishbone, not a diff problem. When you turn the other wheel the wheel rubbing will not turn, so the main driveshaft turns instead. When you turn the rubbing wheel the other wheel turns because there is nothing stopping it turning.

The wheel is rubbing because either the bottom ball joint is not fully screwed into the upright, or the ball and pivot parts are worn. The first one is easy to fix, the second one means you need to replace the pivot ball and/or the plastic ring that holds it to the wishbone. You will not need to replace the wishbone to fix this.

[WillyChang]

quote:

Originally posted by Dougan

...but I wouldn't know the difference between a good and worn one!

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NEW:- gear teeth sides have convex (buldging out) surface, and there's a flat plateau at the tips.

WORN:- the sides are flat or concave, and the tips are worn sharp.

[Dougan]

Hi guys,

Thanks to everyone who has replied, its nice to know that I can depend on the forum fo advice. This is my first restoration, and may well be my last! I have spent a small fortune on new parts and still I have to find more parts to finish it. Going back to the front suspension rubbing the wheels. I already have the 4 new front wishbones, at great expense! Now it seems I need new ball joints and everything else associated with it. Please could someone tell me exactly what I need to cure this problem. part numbers etc, and which cars use the same front suspension parts.

Thanks again,

Dougan

[DJTheo]

You can see all the parts and numbers needed in your printed or the online manual of TC.

Cheers