Jump to content

wheeler73

Bulldog
 View Profile  See their activity

  • Posts

    295

  • Joined

  • Last visited

 Content Type 

Everything posted by wheeler73

  1. wheeler73
    Both. The vecu monitors the exhaust temp and can shut the engine down or derate it if the exhaust temp is to high. The vecu controls the gauge.
  2. wheeler73
    They are a good solid truck. I would like to see the maintenance records and have a good shop or dealer look the truck over. As we know it is a used truck and can't guarantee it will not have any unseen issues.
  3. wheeler73
    We have to send ours out to be tested. As far as I know most dealers are like ours and send them out. Some of our customers just have us put in reman injectors and not bother with having them tested. What issues are you having?
  4. wheeler73
    The MP engines also use the engine brake combined with the turbo closing off for engine braking.
  5. wheeler73
    The only non triple counter shaft trans in Mack production is the M drive.
  6. wheeler73
    The system is actually not that bad. Do not clean any DPF or SCR catalyst or filter with water. The most common issue with these are NoX sensors. I change them out all the time. I have only seen a couple of bad DEF pumps.
  7. wheeler73
    You will also need a ABS module for trailer brakes installed. Unfortunately there is no cut and dry air schematics for installing the trailer brakes. Have the Mack dealer print out one for the same year and model with trailer brakes.
  8. wheeler73
    There is an updated delts seal kit for the unit pumps. Also the bolts must be tightned down evenly or the o-rings will get cut or nicked. Make sure the bores are clean and smooth. Always use new unit pump bolts with a little oil on the threads and torque to 60 ft lbs. Also make sure it is not leaking between the solenoid and the body of the unit pump. If it is there is a seal kit for that but it takes a special torks plus bit to remove the screws.
  9. wheeler73
    Which trans is it and what is the issue you are having?
  10. wheeler73
    The exhaust leak will not be your issue. The only issue the exhaust leak at the outlet pipe will have is low exhaust temp. It will not cause data link codes.
  11. wheeler73
    I have seen quite a few alternators cause this. Check all battery, ground and power connections. Make sure you check the frame ground inside the left frame rail by the engine and the power and ground connections on both sides of the cab pass through by the steering column. I have seen a lot of the above loose and causing voltage fluctuations.
  12. wheeler73
    Yes unfortunately you have to remove the turbo and egr cooler. Just be carefull removing the turbo as the bolts do like to sieze up. Rember to use nickel anti-sieze on any exhaust component bolts and nuts.
  13. wheeler73
    I agree with farmer52. What are you looking to use the truck for?
  14. wheeler73
    No problem just keep us updated.
  15. wheeler73
    They are pretty solid. Do not see a lot of issues with them. We just have our regular customers cleaned at around every 4500 hours. What kind does the truck you are looking at have. One on the back of the cab or one behind the passenger steps? The most common issue is the 7th injector. See if it has the air purge kit installed. It will have 2 lines into a tee on the 7th injector. If it does not have an air purge kit on it you will want to have one installed. It helps with the 7th injector issues.
  16. wheeler73
    The DEF systems are on US10 emission trucks. There are some 2010 and 2011 trucks without DEF but very few. The biggest issue with US10 emission trucks that I have seen are the NoX sensors. The 09 CHU should be a DPF only truck unless it is a very early US10.
  17. wheeler73
    Sounds like you may have burnt injector cups. Could also be other issues but that is the most common. Take to the dealer as they can test for air in the fuel to see if you have possible burnt cups.
  18. wheeler73
    Not that I have seen. Stranger things have happened. Has the dpf been cleaned? They are supposed to be cleaned every 4500 hours.
  19. wheeler73
    Those are a common issue. How many hours are on the truck?
  20. wheeler73
    The trans is a reliable trans if they are maintained properly. Sounds like a possible synchronizer.
  21. wheeler73
    What are your temps in the dpf and it sounds like you have a non catalyst dpf. I have seen the atomization modules go bad too. If it is a catalyst dpf the hydrocarbon dosing shut off modules go bad too. There are a lot of things it could be but those are the most common along with temp sensors.
  22. wheeler73
    The correct way is to use a flow/pressure tool for the power steering. What is is doing? Does it make any noise when turning the steering wheel and has anything been done recently?
  23. wheeler73
    Glad you found it. Always check the easy stuff first.
  24. wheeler73
    Check all your grounds and powers. I have found many loose cab pass throughs and ground to the left frame rail by the engine cause lots of issues. Also check the main cab bulkhead connector and the wiring running down from it as I have seen broken wires in the chassis harness where it runs down by the treadle valve.
  25. wheeler73
    Also have the calibration codes programmed.

BigMackTrucks.com

BigMackTrucks.com is a support forum for antique, classic and modern Mack Trucks! The forum is owned and maintained by Watt's Truck Center, Inc. an independent, full service Mack dealer. The forums are not affiliated with Mack Trucks, Inc.

Our Vendors and Advertisers

Thank you for your support!

Mack Related Links

Popular links

BMT Forum Logo

HTML tutorial
×
×
  • Create New...