My replacement for Part #30620958 for V40 1.9T

[shatayl7]

After struggling after trying to find a replacement for the vacuum brake booster switch I decided to try a part that was easily accessible. This is a write up of what I did and the parts I utilized to replace part #30620958.

Parts List from Amazon
B003GBIJ5I (90 degree check valve going into Brake booster 1/2" booster end to 3/8" barbed end)
B003VAVMKI (90 degree Elbow Plastic for no corrosion issues)
B08FS47MQD (Replacement switch all barbs are 3/8")
B07NDVD19P (Heavy wall Silicone hose kit variety of sizes I had to replace some other rotten vacuum lines on the intake that's why I chose this kit as well as the different sizes for fitment there was plenty of hose for the job and the other lines I needed to replace Mostly used the 8mm was a tighter fit)
B07GDCH1YK (oetiker clamp kit was just my preference instead of worm drive clamps)


I chose the extra check valve at the booster instead of a 1/2" to 3/8" barb so i would have more options in rotating the parts to find a good spot for the new switch to sit. I also was not sure the valve would fit in the original position given that the barbs are straight and not angled like the OEM Switch. I Also reused the fitting connecting to the vacuum pump. After assembly the vacuum pump started to suck and shut off as it is supposed to after a certain vacuum was obtained. Brakes were back to full function at start up. Everything worked well on a test drive and it didn't seem that the hoses were routed in a manner that they would be subject to excessive heat. I hope this helps those who are in need of the part that volvo no longer makes.

[eroman2000]

I just found your post and am going to give it a try myself. I have a 2002 S40 with a definite leak on this brake booster hose where it connects to the intake/throttle body, but figure it will all probably fall apart or break once I start trying to fix that. Thank you for this write up, and will let you know how it goes.