gearbox cover and seal identification

I am rebuilding a gearbox from a 68 Commando and the kickstart shaft seal dimensions and appearance indicate it is 06-6145, the seal for a Mark III cover (1.44” o.d. x 0.165" thick.) The X ring seal supplied with the Andover rebuild kit is too small. What I’m not sure about is the seal for the shifter. Is this a Mark III cover and should I use the seal for the Mark III cross shaft 06-5183? The o.d. for the cover recess where the seal fits is 0.936”. This would seem to correspond to the dimensions for SKF 6152 though od for that is listed as 1”. Is 06-5183 the Mark III cross shaft seal the same as SKF 6152?
Thanks,
Brendan

Brendan S said:

What I’m not sure about is the seal for the shifter. Is this a Mark III cover and should I use the seal for the Mark III cross shaft 06-5183? The od for the cover recess where the seal is 0.936”.

Click to expand...

The Mk3 cross-shaft seal 06-5183 is 1/2" x 7/8"(0.875") x 1/4".



The RGM conversion seal is:
https://www.rgmnorton.co.uk/buy/gearchange-splined-shaft-conversion-seal_3731.htm
"GEARCHANGE SPLINED SHAFT CONVERSION SEAL

Part No
SC0625

RUBBER COATED GARTER TYPE OIL SEAL USED WHEN CONVERTING ALL RIGHT HAND CHANGE AMC GEARBOXES FROM O RING TO A PROPER OIL SEAL. PLEASE NOTE MACHINING WILL BE REQUIRED.

SEAL MEASURES: 5/8" X 1 1/8"

Thanks, L.A.B., that is helpful. It appears someone has altered my cover to fit the Mark III seal and presumably the 6152 seal. The OD of the RGM seal is larger than on my cover.
Thanks,
Brendan