-
Hi Guest!
If you appreciate British Car Forum and our 25 years of supporting British car enthusiasts with technical and anicdotal information, collected from our thousands of great members, please support us with a low-cost subscription. You can become a supporting member for less than the dues of most car clubs.
There are some perks with a member upgrade!**Upgrade Now**
(PS: Subscribers don't see this gawd-aweful banner
Hey - did you know if you click on the title of a thread it will take you to the first unread post since you last visited that thread?
but were afraid to ask: 
STOP!! Never post your email address in open forums. Bots can "harvest" your email! If you must share your email use a Private Message or use the 
smilie in place of the real @
Pretty Please - add it to our Events forum(s) and add to the calendar! >> 
Question Number III today
- Thread starter jlaird
- Start date
Share this page
Matthew E. Herd
Jedi Warrior
Offline
I believe the haynes manual has a method for measuring acceptable wear limits. However, I've known that the pumps in my engines weren't too new, so I just changed them without measuring them.
ChrisS
Jedi Knight
Offline
Jack,
My Bentley manual says the clearance between the outside diameter of the rotor and the pump body should be less than 0.010”, the distance between the rotor lobes should be less than 0.060”, and the clearance between the rotor and the cover should be less than 0.005”. Matt is right, they’re cheap, just replace it now. It’s a pain to do later.
My Bentley manual says the clearance between the outside diameter of the rotor and the pump body should be less than 0.010”, the distance between the rotor lobes should be less than 0.060”, and the clearance between the rotor and the cover should be less than 0.005”. Matt is right, they’re cheap, just replace it now. It’s a pain to do later.