Sump nut size
Posted: Fri Jan 29, 2010 1:02 pm
Can anyone advise of the exact size of the sump nut fitted to a K prefix (93?) 4.0 litre XJS, please? Tom C
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Sump nut size
Posted: Sun Jan 31, 2010 11:53 am
According to the Service Manual it's 30mm with an M20 thread.
Sump nut size
Posted: Sun Jan 31, 2010 12:09 pm
30mm confirmed by David Marks at the XJS Seminar yesterday.
As a result of the length of a 30mm spanner and the torque that can be applied as a result, these nuts are prone to being overtightened which strips threads and at worst, especially on later cars where the threaded area of the sump is "scalloped away" can destroy the sump
Always replace the gasket.
Regards
Tony
As a result of the length of a 30mm spanner and the torque that can be applied as a result, these nuts are prone to being overtightened which strips threads and at worst, especially on later cars where the threaded area of the sump is "scalloped away" can destroy the sump
Always replace the gasket.
Regards
Tony
Sump nut size
Posted: Sun Jan 31, 2010 9:45 pm
Hello all
Sump drain plug is 30mm as previously stated over tightening can as DH says can cause severe damage.
The correct torque setting is 41 to 47 newton meters.
Also replace the copper washer as it does get squeezed to flat to use again and only costs a few "coppers".
Best Regards Mark
Sump drain plug is 30mm as previously stated over tightening can as DH says can cause severe damage.
The correct torque setting is 41 to 47 newton meters.
Also replace the copper washer as it does get squeezed to flat to use again and only costs a few "coppers".
Best Regards Mark