RTH: Broken Alt. Tension Bolt

[LFD2037]

I was trying to tighten my belts and the alt. tensioning bolt snapped in half! I tightened the top alt. bolt tight but is it safe to drive it like this or will the alt. loosen up quickly? I need to go buy another bolt (if I can find one).

Also, why would I have a water like substance in the little crevasse, or dimple, where the screw driver is pointing???

 

[ToyotaDon]

You should be fine for awhile without the tensioning bolt. Many vehicles do not have them at all.

Hard to tell about the moisture. It may be coming from that o-ring and the rest of it dried up?

 

[BILT4ME]

My truck is currently operating (for 40K+ miles) WITHOUT the alternator belt tensioner at all, not even the bracket that was used. (PO removed it for some reason, along with the idler pulley) I discovered it was missing after the radiator exploded and I got it all back together and was looking how to adjust it.

I ended up using a pry bar behind the alternator to pry it out for belt tension, then tightening all of the pivot bolts and the one through where the bracket is supposed to be, and it is holding fine. I have since purchased all the parts, I just have not had the time to get them installed.

 

[LFD2037]

My truck is currently operating (for 40K+ miles) WITHOUT the alternator belt tensioner at all, not even the bracket that was used. (PO removed it for some reason, along with the idler pulley) I discovered it was missing after the radiator exploded and I got it all back together and was looking how to adjust it.

I ended up using a pry bar behind the alternator to pry it out for belt tension, then tightening all of the pivot bolts and the one through where the bracket is supposed to be, and it is holding fine. I have since purchased all the parts, I just have not had the time to get them installed.

How many bolts does the alt. bracket actually pivot on?

 

[BILT4ME]

See attached pic.

I bought all the parts and bolts to create the drive belt adjusting bar for about $18 from CDan.

 

[LFD2037]

See attached pic.

I bought all the parts and bolts to create the drive belt adjusting bar for about $18 from CDan.
View attachment 1135250

So 2 bolts hold the alt. bracket to the motor, 1 bolt holds the alt. to the bracket & 1 bolt holds the alt. to the motor (& this is the only bolt that really pivots the alt.)? Thanks!

 

[LFD2037]

Btw, I'd only gotten to 45lbs. of belt tension, according to my Gates gauge, when the adj. bolt snapped!

 

[BILT4ME]

That got me to thinking about it, so I went out and took a picture of how mine is set up right now.

You remove the broken bolt.
You remove the Block adjuster/slider
You install the bolt that WAS through the middle of the block and slide it through the slotted part of the bracket and tighten it to the alternator. You MAY have to find a nut to put on it from the back side. to hold it or lock it.
The upper long bolt is the main pivot and you tighten it when done. (Slightly loose to adjust the belt, then tighten the one in the slot, then tighten the pivot bolt.)

 

[LFD2037]

See attached pic.

I bought all the parts and bolts to create the drive belt adjusting bar for about $18 from CDan.
View attachment 1135250

Do you happen have the the part # for the long adjustment bolt?

 

[BILT4ME]

Sorry. Employer shut down access to 'Mud...... Yes I believe the P/N is 90119-08493 ($1.68). If not that it is one of the following:
91511-C0835 ($0.79)
90080-10200 ($1.23)
All from cdan

 

[Dave 2000]

I ended up using a pry bar behind the alternator to pry it out for belt tension, then tightening all of the pivot bolts and the one through where the bracket is supposed to be, and it is holding fine.

After fitting the 150 amp alternator I could not use the adjuster bolt/bracket, did exactly this a couple of years ago and it has been fine, one day I will get around to making something up....................one day

regards

Dave

 

[decoco]

Sorry. Employer shut down access to 'Mud...... Yes I believe the P/N is 90119-08493 ($1.68). If not that it is one of the following:
91511-C0835 ($0.79)
90080-10200 ($1.23)
All from cdan

does anyone else have the part numbers for the remaining portions of the tensioner? the other bolt and the block the long tensioner bolt slides through?

 

[BILT4ME]

does anyone else have the part numbers for the remaining portions of the tensioner? the other bolt and the block the long tensioner bolt slides through?

Try this:

RADIATOR & WATER OUTLET | Toyota LAND CRUISER FZJ80L-GNPEKA FJ80,FZJ80 | Parts Catalogs | PartSouq

If you are looking for RADIATOR & WATER OUTLET Parts for Toyota LAND CRUISER FZJ80L-GNPEKA FJ80,FZJ80 then we advise you to pay attention to the range of our spare parts catalog for Toyota!

partsouq.com

16381-66030
All the other parts are shown there as well.
Find the P/N using Partsouq, then order from McGeorge or local dealer.

 

[shocktower]

does anyone else have the part numbers for the remaining portions of the tensioner? the other bolt and the block the long tensioner bolt slides through?

I may have that part/parts I'll look tomorrow

 

[decoco]

I may have that part/parts I'll look tomorrow

I found ben parts # the schematic provided by bilt helped but if you have the part maybe we can figure something out

 

[WSOPgold2012]

Anyone have this bolt part #??

This has a long unthreaded portion on the end. It's a pin that connects the alt to the adjuster.

 

[BILT4ME]

Anyone have this bolt part #??

This has a long unthreaded portion on the end. It's a pin that connects the alt to the adjuster.

View attachment 2699972

I don't recall seeing one like that on my 96 LC.

What year is your truck and what engine?

 

[WSOPgold2012]

Ooops...wrong spot. Ty

 

[junglehaole]

Does anybody know the part # for a 3FE alternator adjusting bolt? I’ve ordered the FZJ twice over and have been trying to find one long enough at a hardware store

 

[BILT4ME]

Does anybody know the part # for a 3FE alternator adjusting bolt? I’ve ordered the FZJ twice over and have been trying to find one long enough at a hardware store

Look at posts with 3FE by @jonheld . He has advised this info in here somewhere.