Bigdogtrucker Posted September 9, 2014 Share Posted September 9, 2014 Wondering how exactly this power steering setup operates? Quote Link to comment Share on other sites More sharing options...
gearhead204 Posted September 9, 2014 Share Posted September 9, 2014 better in a cab over! as I understand mack used the same mount in both styles 1 Quote Link to comment Share on other sites More sharing options...
j hancock Posted September 9, 2014 Share Posted September 9, 2014 Use plenty of lube on the joints.Arthritis in that first joint will not be too much fun. Quote JimIt doesn't cost anything to pay attention. Link to comment Share on other sites More sharing options...
Bigdogtrucker Posted September 9, 2014 Author Share Posted September 9, 2014 The U joint on top of the box is worn.How is the pump driven? Quote Link to comment Share on other sites More sharing options...
MACKTRUCKS4 Posted September 9, 2014 Share Posted September 9, 2014 Not sure on your model but on my E-9, the power steering pump is driven off the front accessary drive on top of the motor in the front. Just follow the lines to locate the pump. 1 Quote Live every day like it's your last, because one of these days, it will be. Link to comment Share on other sites More sharing options...
Bigdogtrucker Posted September 9, 2014 Author Share Posted September 9, 2014 Hoses go from the box to the circled area.Power steering is NOT working,any idea's?Does the small canister take separate PS fluid? 1 Quote Link to comment Share on other sites More sharing options...
Popular Post Superdog Posted September 9, 2014 Popular Post Share Posted September 9, 2014 thats the p/s reservoir,most old Macks use engine oil for p/s fluid 3 Quote Link to comment Share on other sites More sharing options...
MACKTRUCKS4 Posted September 9, 2014 Share Posted September 9, 2014 The reservoir is mounted directly to the pump. There should be a filter inside the reservoir. Quote Live every day like it's your last, because one of these days, it will be. Link to comment Share on other sites More sharing options...
Bigdogtrucker Posted September 9, 2014 Author Share Posted September 9, 2014 Just popped the top.Had red PS fluid or ATF(?),very low looked to have a small screen filter.Steering box is a bit wet,not sure if the box leaks or a hose?? Quote Link to comment Share on other sites More sharing options...
gearhead204 Posted September 9, 2014 Share Posted September 9, 2014 nice thing about that set up, you can run it and check it out all while standing along side of the truck. just keep BODY PARTS OUT OF THE FAN with eng. at idle you can turn the steering shaft to dead head the steering box in either direction and watch for leaks (a mirror could be handy) to figure out if its a hose or seal leaking. 1 Quote Link to comment Share on other sites More sharing options...
BAD DOG Posted September 10, 2014 Share Posted September 10, 2014 I believe Superdog is correct on using engine oil being what it originally called for.. I changed the pump on the 866 I had and ran power steering fluid with some Lucas power steering stop leak in it to condition seals in the box . I put a bit of the Lucas in all my old stuff whether it leaks or not. ATF probably would be ok too in that system. I f you don't find any major leaks when you top it up and run it back and forth and you have all the air worked out and the reservoir still goes down you might have a seal gone in the pump putting it into the engine oil. I've had that problem with the small Vickers pumps like that. I just pitched a box full of those pumps actually shells of those pumps all of them had broken shafts. Hopefully your problem is just a line. Quote Link to comment Share on other sites More sharing options...
Maddog13407 Posted September 10, 2014 Share Posted September 10, 2014 atf usually makes it steer too easy and gives a worn out feelin like a worn out old Ford truck steering box. I don't think the atf or ps fluid is thick enough for an older system like that. Quote Link to comment Share on other sites More sharing options...
Bigdogtrucker Posted September 10, 2014 Author Share Posted September 10, 2014 Steering box has some slop as well.Can these be resealed and adjusted? Quote Link to comment Share on other sites More sharing options...
BAD DOG Posted September 10, 2014 Share Posted September 10, 2014 All depends how worn it is. You might be able to take up some slop by adjusting the screw on the worm. Don't touch the pressure screw. If it's too bad best to pull it off and get it rebuilt somewhere that rebuilds steering boxes you might be able to exchange for a remaned steering box. They can be pricey. Quote Link to comment Share on other sites More sharing options...
Bigdogtrucker Posted September 10, 2014 Author Share Posted September 10, 2014 Low mile truck,i can't imagine it's too worn.Never know I guess...How can I find the exact model of the box? Quote Link to comment Share on other sites More sharing options...
gearhead204 Posted September 10, 2014 Share Posted September 10, 2014 search: prosteering in Portland ore. they have a online catalog and also the info on how to identify. 1 Quote Link to comment Share on other sites More sharing options...
Bigdogtrucker Posted September 10, 2014 Author Share Posted September 10, 2014 Sent Prosteering some pics of my box.Just looked at my line sheet info from Mack,steering gear is listed as SGP 48. Quote Link to comment Share on other sites More sharing options...
BAD DOG Posted September 10, 2014 Share Posted September 10, 2014 The # should be stamped on the box somewhere. Sometimes they're on the back side. My Superliner was stamped on the side facing the frame. You might be able to run the VIN and find out the info you need. Quote Link to comment Share on other sites More sharing options...
Bigdogtrucker Posted September 10, 2014 Author Share Posted September 10, 2014 They emailed me back quickly!Steering box is a TRW HF64 series,Prosteering said they'll rebuild it to new for 599-.I'm gonna clean it up add fluid and see what's leaking first as soon as I get the time.Should I do motor oil or top off the ATF/PS fluid??? Quote Link to comment Share on other sites More sharing options...
b61mack Posted September 10, 2014 Share Posted September 10, 2014 Some of the older TRWs had play in the box until you started it up, don't know what model though. 1 Quote Link to comment Share on other sites More sharing options...
Bigdogtrucker Posted September 10, 2014 Author Share Posted September 10, 2014 Anybody know where I can get new u-joints for the steering shaft? Quote Link to comment Share on other sites More sharing options...
BAD DOG Posted September 11, 2014 Share Posted September 11, 2014 The U Joints you should be able to get anywhere you get your truck parts from. U joints for a steering shaft should be standard. 1 Quote Link to comment Share on other sites More sharing options...
Brian Blaylock Posted September 11, 2014 Share Posted September 11, 2014 If this is a endt 865 or 866 and the reservoir has fluid in it but the power steering doesn't work the input shaft on the pump could be broken as this was a common problem Quote Link to comment Share on other sites More sharing options...
Maddog13407 Posted September 11, 2014 Share Posted September 11, 2014 id drain it and put 15/40 in it. might tighten it up and might stop the leaks 2 Quote Link to comment Share on other sites More sharing options...
Bigdogtrucker Posted September 11, 2014 Author Share Posted September 11, 2014 Brian the reservoir is just about empty,deff. is leaking from a hose or the pump.I'll try 15/40 and some Lucas. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.