I have a 81 buick regal 6 cylander & my fan belt/Alt. belt/ AC belt broke and IO have no idea how to put the new one on!! need a diagram if possible!

The video shows the whole thing on a LeSabre. This link shows the belt routing and where to get a new belt.

https://www.google.com/search?q=2005+buick+rainier+serpentine+belt+diagram

try your local auto parts store

Yes but there may be a pulley you have to remove to make it work. a standard non ac belt should fit.

you would need a new a/c pump, however you you didnt want to replace it and could live with out the a/c, a cheaper option is to replace the belt and bypass the a/c. Most auto parts store will sell you a belt of the correct dimensions if you tell them you wish to bypass the a/c. I've done this for many customers. It can be done on just about any motor.

Best of Luck.....

1986 MERCURY GRAND MARQUIS - V8 5.0L 302ci GAS FI N F

Belt Routing Diagram / Fan, Alt. & P.S., w/o 70, 100 Amp Alt., w/o A.C.






Belt Routing Diagram / Fan, Alt. & P.S., w/70, 100 Amp Alt., w/A.C.




Hope this help (remember rated and comment this).

that engine uses 2 belts I believe. if the diagram isnt clear, draw your own. Gates belts has diagrams for belt routings, on their website, look up yiu car, find the belt, then click on the camera icon to see the routing.

low engine oil level or the alternator not working or the alt. fan belt loose or broken...

here are 4 diff. type of diagram.
Depend on how many pulley you have.
Let me know if this help you.

buy a new tensioner assembley and idler pully and might as well get a new belt while your at it. you will need a 3/8 ratchet a 15 mm socket and a 13 mm socket there is one bolt holding on tensioner remove it discard old tensioner put new tensioner in place and tight bolt. second remove bolt from idler pulley discard old pulley put inton place and tighen bolt. next install belt fallow belt routing digram put head of 3/8 rattachet into hole on tensioner or on bolt head of tensioner pulley depending on style of tensioner and pull or push to create slack in belt push belt into groves on all pulleys and release tensioner

if serpentine, then it should be on the fan shroud or the radiator cover...