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Does anybody know where I can find a V-belt diagram for a 1986 F-250 4.9L 300cu Straight 6 ? Where every accessory is powered by a different belt, one for ac, one for power steering, etc.
I am going to put a belt on my truck for the ac &, if needed, replace the power steering belt.
Thanks.
Last edited by Christopher Workman; 02-07-2018 at 08:12 PM.
Reason: Additional info
Thanks Jackie that is part what I needed so I was sure on how the belts get routed.
Now I am sure I need to come up with a water pump pulley but still not sure what I need to do for the crank.
I just got the belt and gave it another shot and maybe just maybe the PS pump is on the wrong groove?
Thing is I am using the GM type PS pump and the way part of it mounts off the front of the timing cover bolts.
I don't know if I can move it back so it will use the center crank groove.
I need to move the truck back to my garage and pull the compressor and PS pump to see if I can move the pump back.
I can also tell if the compressor belt will line up better, fingers crossed!
Thanks again
Dave ----
Hope it works. Why do you need new WP and crank pulleys?
Well I don't need the crank pulley as there are only 2 listed for the 300 six motor and both have 3 grooves.
I do need the 3 groove large dia. water pump pulley because mine is for a non AC motor so it has 2 large dia groove for the 2 ALT belts, , only 1 ALT belt used for AC truckks, and a small dia. groove think for the air pinup.
In the picture you posted for AC all belts go over the water pump pulley and the AC belt will not fit in the small groove and it will run at a different speed and burn out a belt.
Here is a picture of the WP pulley. The belt going to the right is the PS belt and that was the same size listed on line at parts stores so I don't know what the center grooves are for on a non AC truck?
The AC belt runs where the PS belt is in the picture. I have moved the PS pump back so it is using the center grooves like it should.
Did I make it clear LOL It is hard unless you can see it in person I guess.
Dave ----
I think I get it now, although I had to read what you wrote about three times over, probably due to a touch of heatstroke from replacing the entire exhaust out in the sun on the 95 250.
Your pulley has a small groove when it really needs a big groove there? Have you checked epay? If not, pretty sure my localish yard has one.
I think I get it now, although I had to read what you wrote about three times over, probably due to a touch of heatstroke from replacing the entire exhaust out in the sun on the 95 250.
Your pulley has a small groove when it really needs a big groove there? Have you checked epay? If not, pretty sure my localish yard has one.
Could be heat stroke on my end too as it was mid 90'a in the garage when I started working.
Yes that small dia. Pulley is for the air pump on non AC motors. AC motors the air pump belt runs off the ALT pulley.
Thanks for the offer to go looking but a member had an extra on the shelf he is sending me.
Hope next weekend I can pull a vacuum and see if it holds then charge it.
Thanks for your help
Dave ----
02-07-2018, 07:32 PM
