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Hi, Ive recently bought a K reg Fourtrak TDX and i have a few little problems with it. After reading through some other topics i think i need to get the propshaft balanced. I get vibrations whilst driving most, noticable in 5th at around 40. The person i bought it off said he changed the uj so i assume he didnt mark it and refit it correctly. Whats involved in the balancing process and where would i get it done?
Also on pulling off and changing gear there is a noticable clunking from the rear when it takes up power. I had a look and theres no play in the uj's but it seems to be in the rear axle.
Thanks in advance
check the `float` in your
check the `float` in your rear diff and or the splines on the dive shafts and face plates
Thanks for the reply. How
Thanks for the reply. How would i go about checking that? Is there any way of tightening it up without replacement?
not sure how you adjust the
not sure how you adjust the float in the rear diff on these, however if you drop the prop shaft you should be able to see if the flanges are loose which can give this effect you are talking about
Playing
Setting the backlash in the axles is not impossible, but difficult for the home mechanic, as this requires some specialist tools, and some serious power to strip them down and rebuild them correctly.
Check the oil levels as these are often neglected, and this causes premature wear, particularly in the rear axle, various compounds are available to quieten the axles, these are cheaper than a rebuild, in terms of money, and time.
Ive had a good look at the
Ive had a good look at the UJ's and it seems to me that only the front was changed. Both have very minimal play, barley nothing, but neither seem to have grease nipples on them. Either way its definatley the diff where the slack is.
Its not that the rear diff is noisy, its just theres a very definate clunk from it when it takes up the power when pulling off and changing gear.
Propped Up
Silly question? were both uj's changed, or just one, this usually leads to problems, were the grease nipples put into the new joints, and are they properly greased. Grease storage in the UJ prevents end float to a large degree.
To check the UJ's grasp them firmly and lift them up and down along its axis of movement, any more than a touch of play indicates worn UJ's, where the two parts of the propshaft slide together may also cause problems if they are not greased, this is where the splined sections are located, and they should also have a grease nipple.
Check these and grease well before spending any money.
I had the exact same problem!
The clunk you speak of happened to me too! I had people telling me it was the diff and all sorts! The problem in my case was the bolts that hold the propshaft onto the flange on the rear diff were tight but not tight enough, so when taking off or changing gear the propshaft would slip forward by not even 1/8" then hit (hence the clunk) before taking up drive. take a serious look at this before going any further, I spent a lot of money trying to fix this very simple problem!
Cheers!
Az.