Truckers Report Jobs

Find Trucking Jobs

Company Driver Company Driver Dry Van Dry Van Flatbed Flatbed Refrigerated Refrigerated Specialized Specialized Owner Operator Owner Operator
More Trucking Job Searches ⌄ Fewer Trucking Job Searches
⌃

Power Steering Bleed 17 IHC 7600

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by ojavery, Sep 14, 2018.

  1. Sep 14, 2018 #1
    ojavery

    ojavery Bobtail Member

    8
    6
    Mar 19, 2018
    0
    Hi !! I have a 17 IHC 7600 with a N13 engine. I replaced the 2 steel lines going to the power steering pump. I can't seem to get it to bleed out though. I've worked the steering hard but it wont completely smooth out. After I turn it off I go to take the cap off and there's a lot of pressure (air and oil)
    Thanks!!
     
    ojavery, Sep 14, 2018
    ojavery, Sep 14, 2018
    #1
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  3. Sep 14, 2018 #2
    Goodysnap

    Goodysnap Road Train Member

    3,500
    8,375
    Jul 12, 2017
    0
    Not an IH guy but try this.

    Jack it up and take the load off the wheels. Leave the truck off and the resevoir cap off. Turn lock to lock slowly and watch for air to purge. Once no more air is present try running with no load lock to lock until no more air is present. Then set it back down and try again.

    Often with the system capped and the pump agitating the fluid and air it will remain trapped in the system.

    HTH
     
    Goodysnap, Sep 14, 2018
    Goodysnap, Sep 14, 2018
    #2
    ojavery and Rideandrepair Thank this.
  4. Sep 14, 2018 #3
    AModelCat

    AModelCat Road Train Member

    27,709
    145,170
    Jul 7, 2015
    Canuckistan
    0
    @Heavyd knows these trucks well.
     
    AModelCat, Sep 14, 2018
    AModelCat, Sep 14, 2018
    #3
    ojavery and Rideandrepair Thank this.
  5. Sep 14, 2018 #4
    Heavyd

    Heavyd Road Train Member

    7,625
    6,027
    Feb 4, 2009
    0
    The power steering can get an air lock in it in the pressure line that loops up and over the frame rail from the pump at the union fitting between the two line sections near the gear itself. Crack the fitting loose at the union without the engine running and it should gravity bleed itself. I'll post a picture, its a Prostar, but the 7600's are very similar.

    MF13.jpg
     
    Heavyd, Sep 14, 2018
    Heavyd, Sep 14, 2018
    #4
    ojavery Thanks this.
  6. Sep 15, 2018 #6
    ojavery

    ojavery Bobtail Member

    8
    6
    Mar 19, 2018
    0
    Thanks so much @Goodysnap and @Heavyd , I did what heavyd said first, it was better, but still had some air, so I let it sit and then did what Goodysnap said, then test drove in parking lot, much better. Pump still has a moan to it and there's a spot where the steering is a little heavy. Will that work its self out or should I keep working the 2 procedures? I'm going to take a longer test drive soon to see if it changes anymore. Thanks again for the help, I really appreciate it!!
     
    ojavery, Sep 15, 2018
    ojavery, Sep 15, 2018
    #6
    Heavyd and Goodysnap Thank this.
  7. Sep 15, 2018 #6
    Goodysnap

    Goodysnap Road Train Member

    3,500
    8,375
    Jul 12, 2017
    0
    Watch the fluid in the resevoir while running if you can see it. Should be clear. If air is still present it will be cloudy or foamy looking. If it still has hard spots, repeat the process. Not good to run it with air in it.
     
    Goodysnap, Sep 15, 2018
    Goodysnap, Sep 15, 2018
    #6
    ojavery Thanks this.
  8. Sep 15, 2018 #7
    ojavery

    ojavery Bobtail Member

    8
    6
    Mar 19, 2018
    0
    Ok, was clear, so I took it on a 30 mile drive, came back popped hood , reservoir was still clear and took the fill cap off and no pressure. I think I'm good. Thanks!!
     
    ojavery, Sep 15, 2018
    ojavery, Sep 15, 2018
    #7
    Heavyd and Goodysnap Thank this.
  9. Sep 18, 2018 #8
    ojavery

    ojavery Bobtail Member

    8
    6
    Mar 19, 2018
    0
    So I parked truck in the shop Saturday when I finished and figured I'd go through the bleed procedure one more time Monday when I came in. Well I didn't make it in Monday so I left instructions with a co worker. He ended up having to bleed out the steer boxes . Evidently me running it Saturday and getting it warm allowed it to function well. Then after sitting the air that was still in there locked it up pretty good. He went to steerbox manuf site and found info there. Thanks again for your help.
     
    ojavery, Sep 18, 2018
    ojavery, Sep 18, 2018
    #8
    Heavyd Thanks this.
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.