Thread: Balancing front prop. shaft.

Did you assemble the shaft out of Phase??
Thats the way it was when it was manufactured

Originally Posted by djam1

Did you assemble the shaft out of Phase??
Thats the way it was when it was manufactured

Quite probably!

I made sure that the yolk on the driveshaft was 180 degrees out from one end to the other when I put it together.

The sliding joint should have marks each side to show how it should be assembled. You may need to clean it up to see them. The ones I have seen are an engraved arrow on each part, which should be assembled pointing to each other.

John

Originally Posted by JDNSW

The sliding joint should have marks each side to show how it should be assembled. You may need to clean it up to see them. The ones I have seen are an engraved arrow on each part, which should be assembled pointing to each other.

John

That's what it says in the Haynes manual!

But, for the life of me I couldn't find any identifying marks.

I just had to consider rotation and try to balance the thing by sight, so to speak(i.e. grease nipples opposite, yolks opposite, etc...)

Are you suggesting I pull the whole thing out and have another look?

I don't mind! I want it to work. But...?

Bump... Anyone please?

Originally Posted by discomuzz

Bump... Anyone please?

This is a brand new front propshaft from the RRC 1990
I "think" the "out of phase" for this model is "29 degrees"

The problem with yours is it is out of balance as you have lost the spline markings .... and just changing the uni joints is enough also to throw it out of balance ..... hence "have lost the balance of the shaft"

Have a look at mine

b2 new prop shaft.jpg

You might as well spend the $100 and get it done properly ... as a unbalanced shaft will cost you on diff & transfer box seals & bearings

Hope it helps

Getting perfectly good hsafts balanced is a load of crap, they don;t go out of balance unless something changes, either you've incorrectly fitted the uni's or the worng ones, or most likely the phasing of the prop is out,

1. fit it together so both the inside the flanges are "in phase", then pull it apart and turn it "out of phase" 1 spline and refit

2. promptly report back here, preferably with pics

Originally Posted by rovercare

they don;t go out of balance unless something changes, either you've incorrectly fitted the uni's or the worng ones, or most likely the phasing of the prop is out,

1. fit it together so both the inside the flanges are "in phase", then pull it apart and turn it "out of phase" 1 spline and refit

Originally Posted by discomuzz

I made sure that the yolk on the driveshaft was 180 degrees out from one end to the other when I put it together.

Now there's the hint of the problem

But he has lost the "line up marks"

Originally Posted by rovercare

Getting perfectly good hsafts balanced is a load of crap, they don;t go out of balance unless something changes, either you've incorrectly fitted the uni's or the worng ones, or most likely the phasing of the prop is out,

Propshafts would be "naturaly balanced" except for the welding and the way they are constructed .... As they are not "true" for being straight ... most of them have a slight bend in them ... from being welded // ect

My thoughts anyway