Hello Guys/Gals
i have a 1980 ford f100 351w 4x4. just got the truck back on the road and noticed a grinding noise coming from the front driver side area. while driving down the road if the suspension compresses/flexes or when turning left i get a grinding noise from the front left side. the noise sounds almost like the drive shaft is hitting the exhaust, but its not. thought it was the wheel bearings but the noise is present even when sitting still and the wheel turned all the way to the left just before hitting the stop. no noise when turning right at all. put new power steering pump in thinking that was the problem with fresh fluid (type F) but i was wrong, problem/grinding is still pressent. was thinking gear box but not 100% sure. any help greatly appreciated

 

See if the fan is hitting the fan shroud.

 

no fan shroud installed at this time. been doing alot of work to the truck lately.

 

If it's doing it sitting still, it has to be something with the engine, it's the only thing turning. I would lift the hood and get someone to turn the steering wheel while you look around under there.

 

already did the also no luck on pin pointing the problem if i reomve the power steering belt and the problem goes away would you say gear box?

 

Sounds logical, since you already replaced the pump.

 

Well purged/flushed the system and did a test run with everything hooked up and while hold idle at 1500rpm's the noise was very loud the pump got hot fast and started foaming out the cap. Checked connections and everything's tight no leaks sounds like I have a blockage somewhere?

 

Well pulled belt off and drove truck noise is still there. Spun both wheels driver side only did about 2 revolutions then stopped passenger side would spin about 8-10 times wondering if bearings, but id it was bearings I wouldn't be able to hear the noise while sitting still.