28-09-2019, 07:52 PM
Hi,
I am currently re-assembling the gate change casting onto my 3-speed gearbox.
The casting is held in place by three cheese head screws which sit in counter-bored holes in the casting but when I dismantled it there were no shake-proof washers on the screws. I thought they had probably been omitted in error but now realise the diameter of the counter-bore doesn't seem large enough to allow them to be fitted.
Should there be some form of anti-vibration washer here or do the screws simply go in as is?
I'm also deciding what oil to use in the gearbox. I have previously used normal 20/50 engine oil but have seen reference to using a straight (Not EP) SAE 90 oil which apparently can have the effect of slowing the gears down during a gear change making silent changed easier to achieve.
Does this make sense and what are others using?
Many thanks,
John.
I am currently re-assembling the gate change casting onto my 3-speed gearbox.
The casting is held in place by three cheese head screws which sit in counter-bored holes in the casting but when I dismantled it there were no shake-proof washers on the screws. I thought they had probably been omitted in error but now realise the diameter of the counter-bore doesn't seem large enough to allow them to be fitted.
Should there be some form of anti-vibration washer here or do the screws simply go in as is?
I'm also deciding what oil to use in the gearbox. I have previously used normal 20/50 engine oil but have seen reference to using a straight (Not EP) SAE 90 oil which apparently can have the effect of slowing the gears down during a gear change making silent changed easier to achieve.
Does this make sense and what are others using?
Many thanks,
John.