Bullet 500 primary problem

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Bullet 500 primary problem #78367

By stinkwheel - Tue Aug 07, 2018 8:21 am

- Tue Aug 07, 2018 8:21 am #78367

I don't think there is a breather on the primary chaincase on recent bullets. Not so I've noticed anyway. Again, the question would be how it got pressurised in the first place because there's nothing in there that produces gas... which brings us back to the crank seal.

Bullet 500 primary problem #78371

By Beezabryan - Tue Aug 07, 2018 12:23 pm

- Tue Aug 07, 2018 12:23 pm #78371

I wonder, has the crank seal been inadvertantly fitted the wrong way?

Bullet 500 primary problem #78377

By enman - Tue Aug 07, 2018 8:56 pm

- Tue Aug 07, 2018 8:56 pm #78377

Hi crank seal definitely fitted correct way around, I did rebuild 18 months ago and problem only just surfaced, since I drained and refilled both engine and Chaincase I've done 180 miles with 20/50 in each and Chaincase level is constant as is oil level with no leaks,so I must assume it doesn't now like ATF in Chaincase although I've been using ATF in it for 8 years

Bullet 500 primary problem #78391

By vince - Wed Aug 08, 2018 7:09 pm

- Wed Aug 08, 2018 7:09 pm #78391

Hi, just a question, in what way was the ATF contaminating the engine oil? Vince

Bullet 500 primary problem #78392

By enman - Wed Aug 08, 2018 7:45 pm

- Wed Aug 08, 2018 7:45 pm #78392

Hi Vince,ATF migrating from Chaincase and mixing with engine oil therefore contaminating it

Bullet 500 primary problem #78393

By Leon Novello - Wed Aug 08, 2018 11:28 pm

- Wed Aug 08, 2018 11:28 pm #78393

Vince: Automatic Transmission Fluid (ATF) is very thin, usually around 5W/10, engine oil is a lot thicker,20-30-40- 50 etc. It will dilute the engine oil.