Re: Bell Housing to Gearbox interface

[Clive Sherriff]

As far as I know the factory never fitted a gasket at this interface, despite it being wetted by the gearbox oil. (Half the complaints about rear engine oil leaks seem to be due to Gearbox leakage from this join ot the Mainshaft oil seal on investigation) I always thought there should be a thin gasket here - Can anyone see a reason for not fitting a thin gasket? Regards Clive

[Robert Grunau]

I agree, the factory never fitted a gasket between the bellhousing and gearbox. The bearing extension spigot on the bell housing should contact the outer race of the front ball bearing to locate it. If you install a gasket on the main joint, no matter how "thin", the spigot will be pulled away from the outer race. Hence the bearing and input shaft can move back and forth in the gearbox casing. No good. The TC gearbox uses a flat and bellville washer behind the spigot to ensure some pressure on the outer bearing race. For unknown reasons, the TD/TF gearbox has none of these washers and so the bearing location depends entirely on the accuracy of the spigot extension. It may be a good idea on these gearboxes to install some belleville washers to ensure the spigot bears against the outer race. I use a smear of good non-hardening gasket goo ( Permatex 2 ) over the entire face of the bell housing and torque the eight bolts holding the bell housing to the casing. I use 25 ft-lbs torque. I don't think I have had any leaks from this joint. Regards, Bob Grunau As far as I know the factory never fitted a gasket at this interface, despite it being wetted by the gearbox oil. (Half the complaints about rear engine oil leaks seem to be due to Gearbox leakage from this join ot the Mainshaft oil seal on investigation) I always thought there should be a thin gasket here - Can anyone see a reason for not fitting a thin gasket? Regards Clive Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ --- Incoming mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.351 / Virus Database: 197 - Release Date: 4/19/02 --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.351 / Virus Database: 197 - Release Date: 4/19/02

[Donald Wilkinson]

Digitaldon sez: if this preys on yer mind, just paint(squirt) some gorilla snot on there & bolt up; sleep easy thereafter. Don TC 7993

>From: "Clive Sherriff" clive.sherriff@ntlworld.com> >To: mg-tabc@yahoogroups.com> >Subject: Re: [mg-tabc] Bell Housing to Gearbox interface >Date: Wed, 1 May 2002 18:17:48 +0100 > >As far as I know the factory never fitted a gasket at this interface, >despite it being wetted by the gearbox oil. > >(Half the complaints about rear engine oil leaks seem to be >due to Gearbox leakage from this join ot the Mainshaft oil >seal on investigation) > > I always thought there should be a thin gasket here - Can anyone >see a reason for not fitting a thin gasket? > >Regards > >Clive > > > > >Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > >

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