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post #1 of (permalink) Old 12-01-2003, 08:01 AM
scott400f
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Help needed Front Wheel clunk-popping noise

My front left wheel has a clunk or popping noise you might say when backing through a a low spot when the wheel is cranked eitheir left or right. I tried to find a related post but with dial up searching can be difficult. I may be getting the same noise in the right front but it is not as pronounced as the left.


Could this be a cv joint? If so where can I buy a replacement from at a fair price and is it somethng I can do in my driveway?

Thanks and Happy Holidays!!

Scott

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post #2 of (permalink) Old 12-01-2003, 09:22 AM
 
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Re: Help needed Front Wheel clunk-popping noise

Sounds like a birfield (CV) to me.

Replacing the axle shaft assembly is what you need to do. not dificult.

You can do it one of two ways.

o Remove the wheel.
o pull the 2 caliper bolts and hang it out of the way using wire or something. Don't let it hang in the rubber
brake line
o Remove the lock assembly, then the axle's C clip
o Remove the steering knuckle rear ball seals.
o Pull the kingpin caps (Don't lost track of the shims and where they go, and dont bend them)
o Slide the assembly out, then the axle shaft if it didn't come out
o Reverse assemble using the new axle shaft

I don't recommend doing it that way unless your dong a quick fix in the field

Complete job.

o Remove the wheel.
o Pull the 2 caliper bolts and hang it out of the way using wire or something. Don't let it hang in the rubber
brake line
o Remove the lock assembly, then the axle's C clip
o Use a 2" or 50 mm socket to remove the axle bearing nuts, they are locked i place with a tabbed lock
washer that folds down on one or more flats of the outer nut.
o Remove the hub assembly.
o Remove the steering knuckle rear ball seals.
o Pull the kingpin caps (Don't lost track of the shims and where they go, and dont bend them)
o Slide the assembly out, then the axle shaft if it didn't come out
o If it looks like the gear oil is getting to the Birf joint replace the oil seal inside the axle housing
o Replace the axle shaft, greasing the Birf joint. See below for preferred grease.
o Replace the steering knuckle and kingpin caps, greasing the kingpin bearings. Now is the time to
re-shim the kingpin bearing pre-load if needed.
o Replace the steering knuckle rear ball seals.
o Clean and repack the inner and outer wheel bearings with Blue marine grease or, better still with Mobil 1
#28 synth axle grease.
o Replace the inner wheel bearing seal if needed (It probably will need it, its usually gets damaged during
removal)
o Replace hub assembly being sure to set the preload on the inner axle bearing nut and torque the
outer nut onto the inner nut, and lock washer.
o Replace the C clip on the axle.
o Disassemble and clean the locking hub and lightly re-grease it using the Mobil 1 or blue marine grease. Don't
forget to grease the actuating knob's O ring. Replace the O ring if needed. Also don't pack it tight with grease
It will making a vacuum and the control knob won't rotate freely
o replace the locking hub assembly

It should be obvious this is a fairly major maintenance and one that doesn't happen too often for most rigs.
It is very good preventative maintenance though, and not that difficult. A couple of hours a side when
your experienced at it.

There is a site that is very good on the Aisin locking hub rebuild

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post #3 of (permalink) Old 12-01-2003, 10:20 AM
 
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Re: Help needed Front Wheel clunk-popping noise

My first guess would be a joint. In the past what I have been told to do to test is.... With the front end on the ground have someone turn the wheel while you have your hand on one the joint. You should feel some popping if it is bad. If thats not the one keep on testing the rest. Its a good place to start cause its simple.

Good Luck!
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post #4 of (permalink) Old 12-01-2003, 09:27 PM
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Re: Help needed Front Wheel clunk-popping noise

Check your kingpins/bearings too....
Sarge
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