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mk1collector

Member Since: 17 Sep 2009
Location: West Yorkshire
Posts: 6772

Prop shaft play

Following on from davidwhittakers thread in the puma section I have noticed more backlash/clunking recently when changing gear, under load and decelerating. I've looked at his video which shows lots of free play in the front prop shaft and read that the front diff could be on its way out, so being worried I checked for play in mine. In both the front and rear prop there seems to be roughly 1 to 2 cms of play when turning by hand with the transmission brake off and I wondered is this too much? I'm checking the drive flanges in the next week or two to see if this tightens it up slightly but wondered what was an acceptable amount of play.
Any thoughts appreciated

Cheers
Ray

21st Jun 2014 9:58pm

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20613

I'd say normal, mines the same.
I used to have similar issues with my 90 but after a full service all was like a dream again and has been since.
Axle oils were changed and associated other various fluids with a full service and UJ's greased, not sure what other magic was applied though..
Try differ gear change styles too and see if that makes any change, I find that slow changes aren't always required as such but the technique can make a difference.
I tend to ease off the gas completely for a split second until the bite is taken up and only then re-apply the throttle.
Same technique up and down, with I mine actually find everything smoother carrying weight or towing.

Just a few ideas anyway.

21st Jun 2014 10:33pm

mk1collector

Member Since: 17 Sep 2009
Location: West Yorkshire
Posts: 6772

That's a bit of a relief as I didn't fancy changing diffs. I'll still check the drive flanges and when it gets it's "garage service" I'll get them to thoroughly go over every ball joint and bush.

21st Jun 2014 10:38pm

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20613

I think there was some issues once with A frame bracket bolts or something, could well be as you say bushes etc.
It's all down to the drivetrain movement and slack being taken up and vice versa.
Every action causes a reaction so to speak.

Bushes make quite a difference, I know my shock bushes need doing now (which I will do soon) the ride is awful thanks to the play in the bushes, basically a rattle, you can just tell there is more movement there than should be. Same principle really.
I highly doubt anything serious is in the offing.
Mines an early Puma.

21st Jun 2014 10:54pm

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