releasing belt tension on '85 v8 fan belt - Defender Source
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  #1  
Old September 6th, 2013, 12:17 PM
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Chris Velardi
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Chris Velardi
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releasing belt tension on '85 v8 fan belt

anyone have insight into releasing tension on an early v8 fan belt tensioner ? I heave to replace the power steering belt but to get to it have to remove the fan belt (this is not a serpentine setup ) also have to figure out the power steering belt adjustment again it is on a 3.9 v8 1985
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  #2  
Old September 6th, 2013, 12:57 PM
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Loic Fabro
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Hum.... Not sure what "early" means. On my '95 D90 (v-belt setup), I just undo the bolt of the tensioner if I remember correctly. I did this a few months ago and did not have any issue.
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  #3  
Old September 6th, 2013, 05:33 PM
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Phillip
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  #4  
Old September 7th, 2013, 01:10 AM
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William Skidmore
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Just did this on the old man's 90. Pain in the ass. Loosen the belt tensioner. Then undo the bolts on the pulley wheel for the power steering (its the only way). Then cut the belt with a knife. Try and see if the belt will go on, if not then your going to have to rotate the pump till if fits. It can touch the bracket. Careful not to dent the pump with your dead blow hammer or you might even be able to use a large screw driver to lever it over.

As usual make sure to spray the bolts.
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Old September 8th, 2013, 11:14 AM
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got it done , was thinking it was a spring loaded arm that I could unload the pressure on. what is the proper pulley on the face of alternator ? mine looks much narrower than power steering pulley it matches with (have eaten through two belts in two days (alternator is completely rebuilt and working smooth
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Old September 9th, 2013, 11:28 AM
MonLand
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Loic Fabro
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Quote:
Originally Posted by Chris Velardi View Post
got it done , was thinking it was a spring loaded arm that I could unload the pressure on. what is the proper pulley on the face of alternator ? mine looks much narrower than power steering pulley it matches with (have eaten through two belts in two days (alternator is completely rebuilt and working smooth
Mine has one less groove than the V8-4.0-serpentine setup on a disco (sorry... I made that comment yesterday as I reinstalled my alternator in the '95 D90 and the '96 Disco alternator was laying next to it). Definitely narrower than the flat power steering pulley. Are you going with cheap belts? Even those should last more than a day... I hope mine will last more than a day...
Now... I am realizing that we probably don't have the same setup as my alternator belt is ribbed, goes over/around the power steering pump flat pulley and onto the camshaft. I'm guessing your alternator in on the passenger/curb side and where my A/C compressor is? (That's where I have the not-spring-loaded tensioner).
You should count the number of groves on all the pulleys in the system.
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  #7  
Old January 13th, 2014, 05:18 PM
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Daniel Choi
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Anyone have a link to a good write-up for removing and replacing both the fan belt and alternator belt on a NAS 3.9 1994 D90? Does the fan and shroud have to be removed?
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