“As far as getting that red coded vac line to the turbo off, the one below the compression bypass valve, I sprayed a lot of WD-40 on that fitting from below. Then, from above , kneeling on the engine, with some long, 45 degree needle nose pliers (long ones – 7″ or more; best $8 I have spent in a while) reached down and pulled the hose off pretty much with brute force.”
How to Replace Vacuum Hoses that go to Turbo
Remove the lower compression bypass valve housing bolt first. I did this from underneath. You need to slide something visible down from above, next to the housing so you can find it from below. I slid a length of the new blue silicone vac hose down to dangle next to it. With good light, find the marker, then it is all by feel to find the bolt. Snake one hand up between the exhaust system and the engine with that 10mm wrench, get it on the bolt with your fingertips, turn it about 1/10 of a rotation and keep at it. It will take awhile, some hand cramps, etc. As soon as you think you can turn it by fingertip, do that, and get it out.
jmailloux‘s documentation in TCV Bypass Valve 1998 V70R.doc
1998 V70R Turbo vacuum line – How to get it off?
The Volvo V70R
As the replacement for the popular 850 T-5R and 850 R, the V70 R was unveiled in May 1997. Similar to the previous generation R models it featured a unique leather/Alcantara interior with diamond stitching on the seats. Further styling touches were a special front bumper, blue gauge faces for the instrument cluster, two special colours and special alloy wheels. Standard equipment was substantially upgraded over normal models with a few options available such as a trunk mounted CD-changer,Volvo’s self developed Road and Traffic Information (RTI) navigation system or an upgraded stereo system.
