Let Down Gently - T5WC for sale?

Let Down Gently - T5WC for sale?

Author
Discussion

ukkid35

Original Poster:

6,175 posts

173 months

Tuesday 31st March 2015
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On my way to DN11 this morning, only managed to get 50 miles from home when on the M25 fifth gear disintegrates. Managed to limp home in forth (thank you), but very disappointed.

However my 225k mile 928 is far less amused as it has become the back up car for DN11, so very unfair.

Anyone one have a spare T5WC for sale?

Supateg

744 posts

142 months

Tuesday 31st March 2015
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Very sorry to hear Paul.

I've just fitted the 5Speeds counter gear plate. I have Paul Cangialosi's book which helped.
stripped checked and put back together in a day. I have a inlbs torque wrench also if you need it?
All bits from here
http://www.5speeds.com

ukkid35

Original Poster:

6,175 posts

173 months

Wednesday 1st April 2015
quotequote all
Supateg said:
Very sorry to hear Paul.

I've just fitted the 5Speeds counter gear plate. I have Paul Cangialosi's book which helped.
stripped checked and put back together in a day. I have a inlbs torque wrench also if you need it?
All bits from here
http://www.5speeds.com
Thanks, but I'm more likely to replace rather than repair. The box had overheated by the time I got back home in forth, so I'm not expecting a simple repair.

I expect the parts cost would be much more than a used box even if the damage is minimal.

Andy_mr2sc

1,223 posts

176 months

Wednesday 1st April 2015
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Here's a new 5th gear: Ebay 271819813185.
I recently rebuilt mine with a kit from the states although I'm sure the parts could be sourced here for a similar price. I payed ~£500 for all bearings, seals, circlips, uprated synchros, uprated lay shaft bearing retainer etc. Get a basic puller set and give yourself a day with no one interrupting your concentration. If you're feeling flush treat yourself to a close ratio gear kit from Readman Racing at a very competitive price or get John to do the rebuild.
Putting a used 'box in is a mine field unless you know where it came from. A previous owner had got my Tuscan gearbox rebuilt (at a £2k price tag!) and 22k miles later it was noisy and crunching.

Supateg

744 posts

142 months

Wednesday 1st April 2015
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10 mins is all it will take to assess the main damage, whip the top cover and tail off. Rebuild kit , beefed up counter gear plate, plus fifth and counter gear. As fifth is in essence and overdrive on these boxes, it's located in the tail housing, debris damage, fingers crossed will be localised an should drain down towards the magnet.
Hth

gruffalo

7,521 posts

226 months

Wednesday 1st April 2015
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Try Jason at STR8SIX, he lent me one while mine was away with Quaif, he may be up for selling it.

Tanguero

4,535 posts

201 months

Wednesday 1st April 2015
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Sorry to hear that Paul!

I too would go with rebuilding it yourself. The parts cost wont be as much as a second hand gear box and you will have the opportunity to upgrade and reinforce it as you go. Its not a particularity difficult job and when compared to the uncertainty of buying a second hand box that has probably already been thrashed, at least you end up with a 'new' box of known condition.

ukkid35

Original Poster:

6,175 posts

173 months

Thursday 2nd April 2015
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The Cerb obviously knew what the weather would be like and thought better of it.


ukkid35

Original Poster:

6,175 posts

173 months

Friday 17th April 2015
quotequote all
Supateg said:
Very sorry to hear Paul.

I've just fitted the 5Speeds counter gear plate. I have Paul Cangialosi's book which helped.
stripped checked and put back together in a day. I have a inlbs torque wrench also if you need it?
All bits from here
http://www.5speeds.com
I'm looking to fit 5Speeds counter gear plate in the replacement box that I've bought, and I'm wondering where I can find an inlbs torque wrench. Thanks for the offer to borrow yours, but I'm on a horribly tight schedule and need to try to find one this weekend, any suggestions?

Supateg

744 posts

142 months

Friday 17th April 2015
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Peter had one for sale.....

scerbera

102 posts

114 months

Friday 17th April 2015
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Cant you convert to nm?

Supateg

744 posts

142 months

Friday 17th April 2015
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scerbera said:
Cant you convert to nm?
A torque (drag) of is .45nm to .67nm
or 4-6 in lbs is required
I have one, but currently sat in Rotterdam on a ferry sipping complimentary bubbly! (Won't be home till lunchtime)
All I can say is once set the drag by hand when spun will stop after half a revolution and feel smooth - Heath Robinson yes, that's all I can think of

Tanguero

4,535 posts

201 months

Friday 17th April 2015
quotequote all
ukkid35 said:
I'm looking to fit 5Speeds counter gear plate in the replacement box that I've bought, and I'm wondering where I can find an inlbs torque wrench. Thanks for the offer to borrow yours, but I'm on a horribly tight schedule and need to try to find one this weekend, any suggestions?
The T5 Manual specifies an end float of 0.0005 - 0.0040 inches (0.013 - 0.102 mm) on the countershaft measured relative to the gearbox case with the retainer plate bolts torqued to 15lb-ft rather than specifying a preload on the shaft. http://www.tvr-cerbera.co.uk/GearBoxManual/TRSM-T5... Section 6-8 paragraphs e-g & 6-9 a-h

Not saying the preload method is wrong just that there is an alternative to using an inch pound wrench. I used the end float method on mine.



Edited by Tanguero on Friday 17th April 17:19

Supateg

744 posts

142 months

Friday 17th April 2015
quotequote all
Tanguero said:
The T5 Manual specifies an end float of 0.0005 - 0.0040 inches (0.013 - 0.102 mm) on the countershaft measured relative to the gearbox case with the retainer plate bolts torqued to 15lb-ft rather than specifying a preload on the shaft. http://www.tvr-cerbera.co.uk/GearBoxManual/TRSM-T5... Section 6-8 paragraphs e-g & 6-9 a-h

Not saying the preload method is wrong just that there is an alternative to using an inch pound wrench. I used the end float method on mine.



Edited by Tanguero on Friday 17th April 17:19
True enough, however for increased life out of the box 5speeds recommend fitting their plate and 4-6 inlbs of drag on the countershaft (preload shims) and 0 end float on the input shaft with a few thou preload.
Paul Cangialosi


http://www.5speeds.com/word.html
Hth

ukkid35

Original Poster:

6,175 posts

173 months

Friday 17th April 2015
quotequote all
Thank you both that really helps.

I decided to pull apart the old box as practice. The point where I got stuck was removing the circlip that holds smaller of the two mangled gears (the one on the output shaft. Once that was out of the way the mangled gear would not shift, so I couldn't get the whole shaft out. As long as that doesn't happen with the replacement box I should be ok I guess.

It also took me an hour to find one of the parts that pinged away, but at least I've got a load of spares from the dead box if that happens with the replacement.

Supateg

744 posts

142 months

Friday 17th April 2015
quotequote all
Snap ring plyers
Snap ring gearbox Stanley-Proto J250G

Facom Outside Snap Ring Pliers 411A.17 (Ebay £30)

The snap ring fits on two ways, one of the ways it's a pig to remove with the taper.
It's nigh on impossible to remove the fifth gear (without damage) 5speeds recommends cutting the bearing behind with a dremel and take the lot out and use a press- see YouTube.
The best method I've seen is custom three legged puller, look on you tube again at the ford cosworth gearbox for removal ideas.
The trouble is limited space between casing/ gear as you might have seen.

caduceus

6,071 posts

266 months

Friday 17th April 2015
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Firstly, sorry to hear about your box. When mine went it was a nightmare. Long story...

Have you thought about ditching the T5 for a better/stronger box? IMO the T5 is the only weak link in a Cerbera.

Andy_mr2sc

1,223 posts

176 months

Saturday 18th April 2015
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I must be lucky as my fith gear slid off the shaft after removing the snap ring and tapping the end of the shaft with a copper mallet.
I was expecting to have to machine up a special puller (the one in two halves that wraps around the gear then held together with a sleeve -see utube) but jumped for joy when it slid off!

pmessling

2,284 posts

203 months

Saturday 18th April 2015
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Having had my box inspected and resealed and having the counter shalf support fitted when I asked them they had never seen any T5 boxes with the said wear. And didn't see the need for it which I found interesting.

I haven't driven mind yet with the box after it's been done other than new selector fork tips it was put back without replacing anything else. I was told it was a good box. Having only cover 27k I wasn't excepting it to be worn out.

ukkid35

Original Poster:

6,175 posts

173 months

Saturday 18th April 2015
quotequote all
And this is what is confusing me

https://www.youtube.com/watch?v=E9csOWX_olE

At 9:05 he shows the outer race slipping off over the fifth gear, allowing the entire shaft to come out. However on my box the fifth gear is too large to allow that to happen, which means you can't pull out the entire shaft, without moving fifth gear off the splines.

If you can't get the shaft out then you can't set preload on the countershaft - checkmate.