S40 (New) General : - Accessory drive belt + tensioner changing questions?

StatusRed · Dec 12th, 2022, 11:38

I've done this job on my old C70 (1 single belt, and it was straight forward), I'm now getting ready to change my drive belts on my S40. I've got the kit and the stretch installer tool. I was just checking VIDA for any surprises and saw these references to some bolts in the engine bay (circled in green), what are they for, why do I need to loosen them?

Does anyone also happen to know the size of the crankshaft bolt in advance so I can be sure I've got the right socket?

Cheers.

PNM · Dec 12th, 2022, 18:27

They appear to be part of the engine mount bolts. Not sure why you'd want to loosen them though. I wonder if it drops the engine slightly to allow more space for the Volvo tool to work properly without fouling the body?

I did mine a few years ago, didn't touch those bolts. I also had one of the stretch belt tools and didn't find it particularly useful. I ended up loosening the bolts that hold the AC compressor to the bottom of the engine to create enough slack to get the belt on.

StatusRed · Dec 13th, 2022, 11:18

Quote:

Originally Posted by PNM

They appear to be part of the engine mount bolts. Not sure why you'd want to loosen them though. I wonder if it drops the engine slightly to allow more space for the Volvo tool to work properly without fouling the body?

I did mine a few years ago, didn't touch those bolts. I also had one of the stretch belt tools and didn't find it particularly useful. I ended up loosening the bolts that hold the AC compressor to the bottom of the engine to create enough slack to get the belt on.

Alright that's good to know thanks, do you happen to remember the size of those bolts?

PNM · Dec 13th, 2022, 15:28

I don't I'm afraid, it was a few years ago. They weren't very big, and nothing that a standard socket set wouldn't accommodate for.

StatusRed · Dec 13th, 2022, 16:01

Quote:

Originally Posted by PNM

I don't I'm afraid, it was a few years ago. They weren't very big, and nothing that a standard socket set wouldn't accommodate for.

Cheers, I'll try the tool first and see how it goes. I got a "Lisle 59370 Stretch Belt Remover/Installer" tool.

The other belt should be easy, Just push back the automatic tensioner, slip off the belt, put the new tensioner on (the 3 bolts look pretty easy to access), push back the tensioner and slip on the belt.

PNM · Dec 13th, 2022, 20:40

That's the exact tool I had. Seemed good in principle but I couldn't get it to work. Hopefully you'll have more luck with it.

The old tensioner is a fixed one, so there is nothing to push back. Just cut both belts, swap the tensioner and then get the new belts on

StatusRed · Dec 14th, 2022, 10:43

Quote:

Originally Posted by PNM

That's the exact tool I had. Seemed good in principle but I couldn't get it to work. Hopefully you'll have more luck with it.

The old tensioner is a fixed one, so there is nothing to push back. Just cut both belts, swap the tensioner and then get the new belts on

Mine is automatic, they switched from manual to automatic many years ago so if you've got a fixed one now the next should be automatic when you next need to change it.

PNM · Dec 14th, 2022, 20:28

Quote:

Originally Posted by StatusRed

Mine is automatic, they switched from manual to automatic many years ago so if you've got a fixed one now the next should be automatic when you next need to change it.

They seem to be forever changing them. My 2005 s40 had an automatic one, my 2012 s40 had a fixed one (which failed at 55k and has been replaced with an automatic one

StatusRed · Dec 15th, 2022, 01:03

Quote:

Originally Posted by PNM

They seem to be forever changing them. My 2005 s40 had an automatic one, my 2012 s40 had a fixed one (which failed at 55k and has been replaced with an automatic one

Interesting..

Dec 12th, 2022, 11:38	#1
StatusRed Premier Member Last Online: Yesterday 23:56 Join Date: Jul 2015 Location: Glasgow	Accessory drive belt + tensioner changing questions? I've done this job on my old C70 (1 single belt, and it was straight forward), I'm now getting ready to change my drive belts on my S40. I've got the kit and the stretch installer tool. I was just checking VIDA for any surprises and saw these references to some bolts in the engine bay (circled in green), what are they for, why do I need to loosen them? Does anyone also happen to know the size of the crankshaft bolt in advance so I can be sure I've got the right socket? Cheers. __________________ 2009 S40 SE Lux 2.0i \| 2022 Suzuki V-Strom 650 \| 2002 Audi TT 225 Previous: C70 Coupe 2.4i \| Saab 9-5 Aero \| Daihatsu SporTrak

Dec 12th, 2022, 18:27	#2
PNM Member Last Online: Today 17:13 Join Date: Jun 2018 Location: Midlands	They appear to be part of the engine mount bolts. Not sure why you'd want to loosen them though. I wonder if it drops the engine slightly to allow more space for the Volvo tool to work properly without fouling the body? I did mine a few years ago, didn't touch those bolts. I also had one of the stretch belt tools and didn't find it particularly useful. I ended up loosening the bolts that hold the AC compressor to the bottom of the engine to create enough slack to get the belt on.

Dec 13th, 2022, 15:28	#4
PNM Member Last Online: Today 17:13 Join Date: Jun 2018 Location: Midlands	I don't I'm afraid, it was a few years ago. They weren't very big, and nothing that a standard socket set wouldn't accommodate for.

Dec 13th, 2022, 20:40	#6
PNM Member Last Online: Today 17:13 Join Date: Jun 2018 Location: Midlands	That's the exact tool I had. Seemed good in principle but I couldn't get it to work. Hopefully you'll have more luck with it. The old tensioner is a fixed one, so there is nothing to push back. Just cut both belts, swap the tensioner and then get the new belts on

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)