MVS Contributor and Volvo DIY wizard CN90 posts another detailed procedure on Volvo P80 maintenance, this one is a DIY for a S70 GLT AC pulley bearing.
My 1998 S70 GLT AC Pulley Bearing with 185K miles has been making some faint noise for the last 2 years, I know the AC pulley has been free-wheeling for 2 years. People in the forum say the Zexel compressor should last > 225K miles, this is why I replaced only the pulley bearing and not the whole compressor.
I did 2 stupid things this weekend: doing a write-up for a 20-year-old-car-with-185K-miles (just kidding) and should have done it differently but it is what it is.
In retrospect, the AC Pulley bearing would be “a bit” easier if I d/c the oil cooler line and tilt the compressor upward to allow me to use puller etc.
CN90’s overview notes:
- The M5 bolt was tightened slowly, but all it did was bending the metal tab on the clutch and the clutch itself did NOT budge. The reason I did it this way (w/o template) is that: a few people in forum said they did not use the template, they simply tighten the M5 bolts and clutch came out. It was not true in my case, the clutch was on so tight that I had to use screwdriver. Maybe I should have used the custom template (holes drilled at radius of 19 mm) as written by “Nathan Bryant” a while back: https://www.matthewsvolvosite.com/downloads/Volvo-850-S70-V70-AC-Fix.pdf
- The custom template (see the pdf above) with holes drilled with radius of 19mm is probably the way to go. Use an old brake pad as mentioned etc. If you don’t want to bend the clutch, then read the pdf above!
- Initially I did not want to d/c the upper radiator hose, but eventually I had to. It made life so much easier. Just remember to reconnect the rad hose and add coolant later.
- NA model: easier b/c you don’t have the Oil Cooler hose in the way and you should be able to tilt the AC compressor upward to allow the use of puller. See the posts by burnout8488
- Anyway, if you want to do my stupid way, read on. Hey, BTW, this DIY is also good for PS Pump and Alternator as it is basically the same procedure.