Crankcase vapor oil separator

sparklezap · Post by **sparklezap** » 25 Jul 2021, 11:37

Hi. How do I get the black cap off to check my regulator valve diaphram? Looks odd with those tabs all the way around it. 2008 XC90. Thanks

Capndirk · Post by **Capndirk** » 28 Jul 2021, 11:22

You have to break them to get it off. I bought the Dorman diaphragm kit from Rock Auto,
DORMAN 917147 {#31319642, 31319643} DIAPHRAGM
I used a small punch to break the tabs after trying all kinds of tricks to get the cap off without damaging it. Turns out my diaphragm was fine, but installed the replacement . No problems. Took the car for a 3,100 mile romp right after, and all is well.