Inner driveshaft yoke mod

[GDPR]

I braved the rain today to change my LH outer driveshaft, as it was making a squoink noise under braking (the inner bearing race I suspect is moving on the flange in sympathy with the warped drum mounting flange where someone has taken a hammer to it in the past).

I noticed that the sliding spline had gone dry again, and random muffled clonks from the rear end on reversing, and worsening Triumph twitch told me something needed to be done.........and more permanent than just giving it a good smear before re-assembly.

So I took off both inner yokes, and drilled the spline sleeves 5.5mm at the UJ end on the external shoulder, tapped them 1/4 UNF and fitted grease nipples. Reassembled the yokes to the car, but before bolting them up, left the bolts very slack so the flanges were located,and compressed the sliding spline as much as I could.

I then got an old grease gun, filled it with CV grease and pumped it in until the shaft flanges were pushed back on to the diff flanges again, and then a few more strokes until I saw the spline bellows just start to inflate.

Tightened everything back up, and took it for a run and it was transformed, with no detectable twitch, and my reversing thuds and clonks eliminated.

It may not be the dogs testes Datsun shafts, but it was a very cheap and effective mod that I thought a couple of you might like to do....... plus I can grease my splines easily should I get any twitch later

Russ:dude:

[stustag]

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Neat mod Nick I will do this when I get to take mine of (if the rain ever stops!) off to do this often over looked maintances item.

Superb!

Stuart

[GDPR]

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Nick?

[DJT]

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Well done, Russ.

Often wondered about this and it would have been on my 'to-do' list if I hadn't gone the Datsun route.

Another one for the Modifications List. Still not sure about the need for a security lock for the headlight panel though . (Bet you thought we hadn't noticed, Stu!)

Dave

[stustag]

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That is an exclusive mod DJT and considering it does nothing at all now the wires behind it have been removed (remember you commenting on the wires over the OS strut!). :?

I need to replace this one piece of the grill due to this mod!:X

Stuart

[Phil]

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DJT wrote:

Still not sure about the need for a security lock for the headlight panel though .

Dave

What is it with TOPAZ mines got the same security lock, its not connected either



Phil

[stustag]

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Phil wrote:

DJT wrote:

Still not sure about the need for a security lock for the headlight panel though .

Dave

What is it with TOPAZ mines got the same security lock, its not connected either



Phil

Hi Phil

If yours is like this one it is for an immoboliser which may of been disconnected.

Stuart

[Phil]

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Stu

Yes thats the one.

Photo taken the day I got the car since given good clean now it just needs the grill repainting. Doubt I'll remove it conversation piece if nothing else

Phil

[redstag]

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I then got an old grease gun, filled it with CV grease and pumped it in until the shaft flanges were pushed back on to the diff flanges again, and then a few more strokes until I saw the spline bellows just start to inflate.

I did something similar when I had the original shafts onmy car. There is a plug (a bit likea core plug) at the end ofthe sleeve in the yoke and you need to be careful that the extra grease doesn't blow the plug out.

This happened on my car and leaves the splines open to contamination.

Pete

[GDPR]

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Agreed - that's why I let the gun push the flanges back together then just a couple of extra pumps to ease some grease down the splines - too much, too fast will pop the welch washer out the end

Russ:dude:

[SwissSteve]

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Very interesting article.
Just the sort of article we should be sending to the club mag IMO?

Just a thought

[Pommie Stag]

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kryten wrote:

Nick?

Thanks Nick? form down here, i did experience a rather good tail slide a while ago, it felt like torque steer from the back end was this Triumph twitch Russ, please describe for us that didn't experience it first time round in the seventies:P

Great mod as PO had the splines greased for me before i picked the car up and said that they have to drop the rear suspension?

[Marco Polo]

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Nige,

Knowing your car from when it was in Palm Cove, and also knowing the garage where it was serviced, I'm sure the mechanics had your PO convinced they had to drop the rear suspension to grease the splines and charged accordingly!

If you don't want to do the mod, just remove the drive shaft inner flange from the diff, undo the strap or tie securing the boot to the inner half of the drive shaft and remove the inner shaft, regrease with a moly grease and reassemble.

IfI were you I'd bite the bullet and do the Datsun drive shaft mod, the shafts are very easy and cheap to getin Aus, Greg Tunstall sells the hybrid UJs.Job done in an afternoon!

regards,

Raoul

[robertt1948]

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Hi Raoul,

I agree completety. The only permanent solution is Datsun drive shafts. I did mine several years ago now and have virtually forgotten they're there because of their perfect performance.

I was lucky to get a pair from the Datsun breaker, Datman, at £45-00 each. My local machinist managed to machine the hub end of the joint without dismantling the complete hub. Saves quite an extra job (2 sides of the car).

Unfortunately, I think Datsun 180B shafts are pretty well extinct now in the UK. Interesting to know what a shipping cost would be from Aussie considering how heavy these well engineered shafts are.

Robert

[Guest]

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robertt1948 wrote:

Hi Raoul,

I agree completety. The only permanent solution is Datsun drive shafts. I did mine several years ago now and have virtually forgotten they're there because of their perfect performance.

I was lucky to get a pair from the Datsun breaker, Datman, at £45-00 each. My local machinist managed to machine the hub end of the joint without dismantling the complete hub. Saves quite an extra job (2 sides of the car).

Unfortunately, I think Datsun 180B shafts are pretty well extinct now in the UK. Interesting to know what a shipping cost would be from Aussie considering how heavy these well engineered shafts are.

Robert

I'm beginning to feel a little left out here, I've never experienced Stag twitch, I did what Raoul suggested three years ago, using ( on advice ) copperslip, but only on principal, and the old girl doesn't have an easy life, what have I done right / wrong ? Martin.