How to remove 500 oil pump gear?

[Jeremy Wilton]

I am splitting a 500 speciale engine, the oil pump gear is a tough pull, what's going wrong? Yes I have removed the circlip (called a Seger pin in the manual?) and washer and it won't come off. I have removed the clutch drive gear so there should be nothing restricting it - I don't want to smack it one, I've done that before with shattering results... Does it need a good puller? Puzzled here...

 

[KERMIT1200]

Hi Jeremy,
Try applying heat to the cover, and tap gently once hot.

Andy

 

[redax5]

some of the oil pump gears need something extra to get them moving be they 500 or triples
I use a pair of small crows feet pry bars, slip them in behind the gear at approx. 180 degrees apart and pop that sucker straight off of there
works great

good luck

 

[Jeremy Wilton]

Thanks lads - heat and a puller - sounds good... will try tonight...

 

[Robin Webster]

Does the 500 pump not have a woodruff key on the shaft?

Needs lining up with the slot in the body to withdraw if so.

Robin 

 

[sfcpiet]

Does the 500 pump not have a woodruff key on the shaft?

Needs lining up with the slot in the body to withdraw if so.

Robin 

The 500 pump is similar in construction to the triple pump.  Shaft can only be withdrawn once body is removed.

piet