1 K75 Gearbox seal Sat Feb 23, 2019 8:15 pm
George R
active member
Hi All - not been on the site for a long time but now spring has risen - time to wake up the K75 Ultima with a MOT and service. This bike which some you will remember for the initial problems has now completed 88,000 miles (140000K) and over 20000 miles since the problems were fixed. Faint hope ! Anyway, on removing the Bevel box I found a good dinner spoon of oil in the joint area between the bevel gear and the swinging arm. Has the oil seal in the gearbox leading to the Cardan shaft failed or what other reason for the oil there? As far as I know the gearbox rear oil seal was original. I made the mistake of putting full synthetic GL5 oil instead of GL5 mineral oil in at the last service a year ago.
Is this possible reason?
Can I just drain the synthetic oil and refill with hypoy mineral oil ?
Anyway, If I must, can I replace this seal without removing the gearbox : the problem being I cannot find any instructions in Haynes of Clymer how to go about it.
PS the front seal towards the clutch was replaced with the clutch plate 2 years ago, and also the gearbox breather cleaned.
Sorry for the long story but thanks in advance to anyone who can assist me.
Regards
George
Is this possible reason?
Can I just drain the synthetic oil and refill with hypoy mineral oil ?
Anyway, If I must, can I replace this seal without removing the gearbox : the problem being I cannot find any instructions in Haynes of Clymer how to go about it.
PS the front seal towards the clutch was replaced with the clutch plate 2 years ago, and also the gearbox breather cleaned.
Sorry for the long story but thanks in advance to anyone who can assist me.
Regards
George