Input Shaft Bearing Gone..

[corolln]

hey,

 

my input shaft bearing has gone.. how long can it last like that does it do any damage to anything?

 

cheers guys

[rob83ke70]

don't flog it and it should last a long time.... make sure its got oil, and drive gently. It will make horrible noises but should keep going.

 

disclaimer: you could be really unlucky and something could actually break though contrary to all of my experiences!

 

Robert.

[altezzaclub]

How do you know its gone?

 

When does it make a noise, and when doesn't it make a noise?? Which gears, clutch in/out...

[seabiscuit]

hey,

 

my input shaft bearing has gone.. how long can it last like that does it do any damage to anything?

 

cheers guys

On a scale of 1 to 10, how "bad" is the noise emitting from the box. If it bothers you while driving, that's probably when it is getting close to failure. If you plan to keep the gearbox, it would be wise to give the gearbox a refurbish, rather then toeing the line for however long it lasts, as it could do damage when it finally gives. Otherwise source another gearbox and just be prepared for it to fail! It happened to me while doing a pizza delivery leading up to some traffic lights... I wasn't able to move after I stopped.

 

What kind of noise? Grinding, clunking (fast, slow, intermittent?), whirring?

Edited June 21, 2010 by seabiscuit

[Trev]

The shaft will slop in and out best to replace it as soon as you can.

[philbey]

I'm with trev. If that bearing is sloppy you're going to accelerate wear on your gears as well.

[ke70dave]

if the gearbox is behind a K motor, you might even get away with buying another box for less than the price of the bearing!

[Evan G]

Altezzaclub - at the lights. in N with the clutch out. noisy. push the clutch in and the noise goes away

[Taz_Rx]

Could also be the pilot/spiggot bearing. But more likely input shaft.

[altezzaclub]

Could also be the pilot/spiggot bearing

 

Yeah, that's why I asked. The clutch release bearing will give that noise in neutral then it vanishes when you put a little pressure on it. Mine does that.

 

But... I put a new clutch in the car when we fitted the manual gearbox a year back, and it also has a growl in all gears except 4th. That is very distinctive and occurs becasue 4th doesn't drive through the layshaft.

 

I thought layshaft bearings but Rob reckons input shaft. When he does one of his boxes I'll do mine at the same time and see...

[Taz_Rx]

Layshaft doesn't actually have bearings!!! Thats why the gear part slowly eats into the shaft it runs on. Been there, done that. :jamie: Took about 5 tonnes of pressure (in a hydro press) to push one of these worn shafts out of the gearbox casing once!!!! :jamie:

[altezzaclub]

Hang on Taz-

 

So the shaft itself is pressed into the gearbox casing and the gear cluster (one-piece as I remember) runs directly on the shaft?

 

I thought they had a tiny set of roller brgs at each end. I was quoted over $350 for layshaft bearings so I dropped the whole idea!

[Trev]

I know T50's have lay shaft bearings and aren't they almost the same as K boxes?

[Evan G]

on ke70 k50 box they just slip out same as the ke30 k50 box. i recently replaced my input bearing. no press no nothing. lay shaft just slid straight out

[corolln]

cheers guys yeah ill replace it soon.. gettin to annoying.. and its a t50

 

anyone got any ideas?? 2 of my gearbox mount bolts have threaded on my ta22.. any ideas??

 

cheers guys