No, not between the mating faces but in the back of the pulley assembly. Here:Makes you wonder how the mud got between the pump running face and the pulley, You would have thought it would have dried out and crumbled and the pulley then become loose?
Was the replacement alternator a Toyota (Denso)?No, not between the mating faces but in the back of the pulley assembly. Here:
View attachment 2906683
No uniformally distributed, I'd guess there was 20grams or so. I'd imagine that eccentric mass would be sufficient to add an imbalance, but it's been there for 30k or more and doesn't seem to have flogged the WP bearing. I'll be able to put some of it back together this evening.
I've noticed that the WP that was fitted had a steel gasket with hylomar, and my replacement has a paper gasket. I'm going to see if I can get a reasonable measure from the face of the block to the pulleys and see if that 1mm of difference is material.
Then whatHaving a matched set of belts start out aligned and quickly misaligning is a quick indication that one of the belts is slipping.
Which one is GAINING on the other IN THE DIRECTION OF TRAVEL.
If the rear belt is gaining, then
Was the replacement alternator a Toyota (Sensor)?
If aftermarket, it's possible the pulleys are not inline with the other pulleys on the engine.
You have stated the following:Then what
Replacement alt is Bosch. I've had 3 years of it not throwing belts mind you.
Glad to hear it's resolved. Don't worry about the belts going out of alignment, perfectly normal. Those things are moving quick. People have already mentioned about various imperfections that contribute, but there's the obvious ones I haven't seen mentioned:Exciting news. I drove for 15mins at 2 - 3.5k rpm and the belts have stayed on. At this stage I've left 2x batteries disconnected for justin, though I'm pretty sure they're fine given their measured capacity. No idea what's resolved this issue - I guess the smart money has to be on the water pump. As a point of note, the belts do not remain aligned, even from idle. Just out of interest I'm going to dig out a strobe and see if I can't spot which one's 'faster'.
HB and WP are oe parts. HB always was, WP just changed.To add to BILT's breakdown, the following have been replaced at some point
- harmonic balancer. OEM? If no, what brand?
- water pump. Brand? (Doubt OEM. OEM water pumps I've dealt with have had nylon, or stainless steel impeller)
- Alternator, Bosch
Three critical components that are all non OEM (assumption), if there's misalignment with v grooves or differences in machining quality control, could be a combination of minor factors.
I agree the hot alternator is a definite clue to something not right there too