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
⌃

2007 International 9400i A/C problem

Discussion in 'International Forum' started by Jarheaddriver, Jul 18, 2013.

Page 1 of 2
  1. Jul 18, 2013 #1
    Jarheaddriver

    Jarheaddriver Light Load Member

    163
    51
    Jan 27, 2008
    Anna, TX
    0
    I have a 2007 Int 9400i with a Cummins ISX engine, and recently the AC stopped blowing cold. The AC Compressor Clutch was worn out.

    We evac'd the system, replaced the following parts.

    System has a APads Control System on it as well.

    AC Compressor
    AC Dryer/Rec
    High Pressure switch
    Low Pressure Switch
    Apads Control Module

    checked for Blockages and didn't find any.

    We tried to change the Expansion Valve but the bolts that mount it to the truck are rusted I can not get the out.

    The system acts like it has a blockage somewhere, as it will vacuum down, and hold the vacuum, it will start receiving the Freon, but when the compressor cycles it draws all the low side Freon down and the high side is over pressure. The good thing is the compressor has a high pressure relief valve on the back of it so when the pressure gets to high it vents it.

    My question is how can I get the bolts out of the expansion valve without damaging anything, and can anyone think of anything else that might be causing the issue. This is the only time the system has been opened.

    Thanks
     
    Jarheaddriver, Jul 18, 2013
    Jarheaddriver, Jul 18, 2013
    #1
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

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

  3. Jul 18, 2013 #2
    TDRV2000

    TDRV2000 Bobtail Member

    40
    13
    Feb 27, 2013
    Ohio
    0
    Are you sure your truck has a expansion valve? I am going over to my buddies house this weekend to fix the ac in his 2006 international. It is a dump truck. I think the model is a 7600i. I am not sure if the model is right. But his has an orfice tube instead of expansion valve. On my 2006 Pete it is located where the bottom metal line goes into the evaporator on the fire wall. I would assume the orfice tube would be in the same spot on his also. Take that line off and see if you can see the valve. They are only about 5 or 6 dollars. Make sure you get the same color valve. You might be able to get a needle nose pliers to pull it out. If not you can go down to auto parts place and get a regular puller for them for about $15. I hope this helps you.
     
    TDRV2000, Jul 18, 2013
    TDRV2000, Jul 18, 2013
    #2
  4. Jul 18, 2013 #3
    Cab Lizzard

    Cab Lizzard Light Load Member

    118
    45
    May 16, 2011
    MIA
    0
    The valve is under the passenger seat outside. Most likely has a metal cover over it. Take cover off and their are two hex head bolts that hold it to the cab.
    Try a bit of liquid wrench and let it sit overnight first !!!!!
    Take a hacksaw blade and cut through the bolt heads (its a #####) when you get them cut, a good pair of vice grips should break them loose. Be careful not to damage the two ends of the hoses !!
    Their is no easy fix on this one !
     
    Cab Lizzard, Jul 18, 2013
    Cab Lizzard, Jul 18, 2013
    #3
  5. Jul 19, 2013 #4
    Jarheaddriver

    Jarheaddriver Light Load Member

    163
    51
    Jan 27, 2008
    Anna, TX
    0
    Cab lizard is right on the location... and No this truck does not have a Oriface tube, already had Int dealer pull the build schematics on the truck. The Expansion (Block) valve in under the cab below the passenger seat, both the high and low pressure switch's attach to the valve. this is what it looks like...
    View attachment 51033
     
    Jarheaddriver, Jul 19, 2013
    Jarheaddriver, Jul 19, 2013
    #4
  7. Jul 19, 2013 #5
    Jarheaddriver

    Jarheaddriver Light Load Member

    163
    51
    Jan 27, 2008
    Anna, TX
    0
    The bolts are recessed into the expansion block. I have a Ryobi one jobplus I was thinking about using but wasn't sure if I should try and cut the head of the bolts off thru the side of the valve wasn't sure how far the tubs extended down into the block from above. I tried to use the number 4 hex to loosen the bolts but they are rusty and wont move.
     
    Jarheaddriver, Jul 19, 2013
    Jarheaddriver, Jul 19, 2013
    #5
  8. Jul 19, 2013 #6
    Heavyd

    Heavyd Road Train Member

    7,749
    6,184
    Feb 4, 2009
    0
    Yes, those bolts can be really tough to get out. Most of the bolt is likely seized in the expansion valve body. I have had luck with cutting a slit on each side of the valve to expose the bolt and spray in some penetrating oil and try to get the bolts to turn. I have also had to cut half of the valve body off in order to cut off the heads of the bolts in order to get penetrating oil in there and pull the valve down. If you get it off and you drilled or cut at all, make sure you flush out the evaporator afterwards to make sure it is clean.
     
    Heavyd, Jul 19, 2013
    Heavyd, Jul 19, 2013
    #6
  9. Jul 20, 2013 #7
    truckmechanic

    truckmechanic Medium Load Member

    534
    140
    Jan 14, 2012
    Hi Desert Ca
    0
    Go to hone depot and get a propane torch and warm up the bolt heads and let them cool off a few times also when still warm spray it with pb blaster it will pull it up the threads
     
    truckmechanic, Jul 20, 2013
    truckmechanic, Jul 20, 2013
    #7
  10. Jul 20, 2013 #8
    Jarheaddriver

    Jarheaddriver Light Load Member

    163
    51
    Jan 27, 2008
    Anna, TX
    0
    okay got the valve off, had to get my dremel out and cut the bolt heads off. The only problem now is I cant get the bolts out of the piece of steel that holds the evap coil to the expansion valve. Ive tried all the following and have no clue where to find another part like this one.

    Drill and Tap extract
    PB Blaster and Torch
    hammer

    it's almost like they are welded into the piece of steel.

    any suggestions.

    Thanks
     
    Jarheaddriver, Jul 20, 2013
    Jarheaddriver, Jul 20, 2013
    #8
  11. Jul 21, 2013 #9
    Heavyd

    Heavyd Road Train Member

    7,749
    6,184
    Feb 4, 2009
    0
    For some reason, I am thinking that plate those two little bolts screw into is separate from the actual evaporator. But you would have to remove the evaporator to get to it.
     
    Heavyd, Jul 21, 2013
    Heavyd, Jul 21, 2013
    #9
  12. Aug 25, 2013 #10
    Jarheaddriver

    Jarheaddriver Light Load Member

    163
    51
    Jan 27, 2008
    Anna, TX
    0
    okay, got the ac fixed and it is extremely cold in here now.... We had to replace the Expansion valve as it had a broken section on the high pressure side. As a recap we replaced the following:

    AC Compressor
    AC Dryer/Rec
    High Pressure switch
    Low Pressure Switch
    Freeze Switch
    Apads Control Module
    Expansion valve

    AC is working almost tooo good now. Problem I'm having now is if I turn the A/C off at idle, the truck coolant temp shots up to 210. If I turn the Fan override on, or the A/C back on it drops back down to 180. I know the APads controls the fan and the A/C, but for the life of me I can't figure out what why the temp goes up with the A/C turned off.

    The engine is a Cummins Recon with less than 185,000 miles on it... Any suggestions?
     
    Jarheaddriver, Aug 25, 2013
    Jarheaddriver, Aug 25, 2013
    #10
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

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

    • Page 1 of 2