Alternator Pulley Fell Off Topic is solved

Post by **cn90** » 29 Oct 2020, 15:02

Re Alternator...

Do not buy local bc it is all Chinese junk.

Buy Bosch (New). Check FCPEuro etc.

XC70Rider · Post by **XC70Rider** » 29 Oct 2020, 17:29

ljsommar1 wrote: ↑29 Oct 2020, 09:00 The pulley on my alternator came off while I was about 90 miles from home. Almost unbelievably I was able to make it home. The serpentine belt still drove the alternator shaft. I did not even discharge the battery.
I ordered a new (not rebuilt) and have not had a problem since, about 30K miles. I rebuilt the original to have as a spare. It is worth noting most alternators sold are rebuilt units and most do not replace the bearings and if they do, they use cheap Chinese ones.

I was 90 miles from home myself. Having Gold AAA I got it towed home for free.

After I throw on the new Bosch alternator I'm rebuilding my OE also. What else should I replace along with the pulley and voltage regulator?

XC70Rider · Post by **XC70Rider** » 29 Oct 2020, 17:35

xHeart wrote: ↑29 Oct 2020, 10:58
XC70Rider wrote: ↑27 Oct 2020, 15:08 On the way to work the alternator pulley fell off
Why would a pulley fell off?

Rick explained it earlier:

When the belt slows down, the inertia of the Alternator Rotor produces a relative CW spin between the shaft and pulley.
Indicates the pulley is not “free-wheel” or “overrunning” like it should.

I got cut off driving 55mph.

The tensioner is OE so I'm replacing it also.

XC70Rider · Post by **XC70Rider** » 29 Oct 2020, 17:36

Drove 500+ miles since throwing pulley back on with no issues. Still installing a new Bosch alternator this weekend.

Post by **cn90** » 30 Oct 2020, 14:07

Can someone post a DIY alternator replacement for 2.5T engine?

I wrote a DIY for 1998 S70 GLT a few yrs ago...

Post by **xHeart** » 30 Oct 2020, 20:01

cn90 wrote: ↑30 Oct 2020, 14:07 Can someone post a DIY alternator replacement for 2.5T engine?

I wrote a DIY for 1998 S70 GLT a few yrs ago...

The DIY for 2001 V70XC takes pulling out the cooling fan only -- two 10mm screws. Unbolt the alternator and carry it along the alley to the air box end, and pull up and maneuver it out. Way easy!

I can share the details if set up works for you?

XC70Rider · Post by **XC70Rider** » 30 Oct 2020, 20:12

Similar task to removing the entire thermostat housing. Need to remove belt, PS pump out of way, intercooler pipe, drain coolant, and remove upper radiator hose. I'll also remove the fan to make it easier.

Wondering if the lower bolt on the belt tensioner can be accessed from above or does right front wheel liner need removal?

Post by **cn90** » 30 Oct 2020, 21:24

Oh,

Found the DIY S60 Alternator by FCPEuro:

Post by **abscate** » 31 Oct 2020, 04:53

Don’t forget to cover up the induction pipes when you remove the induction hoses. Dropping stuff in there is a bad day

Georgeandkira · Post by **Georgeandkira** » 31 Oct 2020, 09:51

XC70Rider asked above: "What else should I replace along with the pulley and voltage regulator?"

An alternator's bearings are always replaced in a rebuild. I doubt Volvo sourced "lifetime bearings".

Alternator Pulley Fell Off Topic is solved

Re: Alternator Pulley Fell Off