Oil pump

YING · Apr 15, 2023

The factory manual says;
The criterion of the oil pump condition is the degree of end float on the oil pump pinions,most easily felt by movement of the drive gear relative to the pump body.
I don’t understand what is excessive. I can move my drive gear very little and wanted to know what is acceptable.
Mike

kommando · Apr 15, 2023

I work to stiffness of the top nut turning by placing a spanner on the top nut and using one finger about 2 inches along the spanner. On a lubricated pump it should show slight resistance, at that level of resistance you will not detect any end float by hand but there will be some if you took it to a quality lab for measurement.

YING · Apr 15, 2023

kommando said:
I work to stiffness of the top nut turning by placing a spanner on the top nut and using one finger about 2 inches along the spanner. On a lubricated pump it should show slight resistance, at that level of resistance you will not detect any end float by hand but there will be some if you took it to a quality lab for measuremen:kommando

kommando said:

I work to stiffness of the top nut turning by placing a spanner on the top nut and using one finger about 2 inches along the spanner. On a lubricated pump it should show slight resistance, at that level of resistance you will not detect any end float by hand but there will be some if you took it to a quality lab for measurement.

Click to expand...

kommando,

I don’t understand what you mean by the top nut.Do you mean the nut that holds on the drive gear? I appreciate your reply
Thanks,Mike

L.A.B. · Apr 15, 2023

YING said:
I don’t understand what is excessive.

Any play is too much.
Manual section C25, 3.
"Servicing the oil pump"

kommando · Apr 15, 2023

YING said:
I don’t understand what you mean by the top nut. Do you mean the nut that holds on the drive gear?

Yes the nut that holds the drive gear on the shaft.

texasSlick · Apr 15, 2023

YING said:
I don’t understand what is excessive. I can move my drive gear very little and wanted to know what is acceptable.
Mike

EASY! When it's excessive, the bike wet sumps.

concours · Apr 15, 2023

....and the "brand new" pump I bought from (X-X) 4 years ago immediately wet sumped worse than the 45 year old one.

baz · Apr 15, 2023

concours said:
....and the "brand new" pump I bought from (X-X) 4 years ago immediately wet sumped worse than the 45 year old one.

Really!
Jeez

Oil pump

YING

Pittsboro,NC

kommando

YING

Pittsboro,NC

L.A.B.

Moderator

kommando

texasSlick

concours

baz

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