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mrsmackpaul

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Posts posted by mrsmackpaul

  1. If you cant hear anything at all, try turning the truck off once it is full of air and then rotating the knob 

    Sounds like you have no air supply getting to the box for some reason

    But first things first, establish a full air charge with the truck, ie start and run till it has built up pressure

    Then stop the truck and try rotating the switch control on the gear stick

    It will not matter if it's in gear or not 

     

    Rotate thru from left to right allowing a moment at each position 

    Yoy should hear puffs of air going thru the gear stick control

    Paul 

    • Like 1
  2. In the rear section of the box you have high split, low split and reverse 

    The high-low split and reverse are mechanically interlocked, it sounds to me that these have bound up for some reason and I would do as Joey suggests 

    Pull the lid and have a look 

    This is a fare bit of stuffing about to do this but it can be done with out dropping the box out 

    If its a air ride cab stick a jack under the cab between the  chassis rail and the cab floor and jack it up as high is it will go without damaging anything 

    With the floor out and the cab up you can get it out okay, getting it back in and lined up right is the hard part 

    But before you do all of this, can you hear the shifters going clunk etc as you rotate the knob  ?

    The mechanical interlock is situated in the blue circled area, theres a nolt doo hicky were the arrow points were the mechanical interlock comes outfor working 

    20210724-135202.jpg

    Paul

    • Like 2
  3. 23 hours ago, D-Day said:

    I had a similar problem with a 350 in a superliner always had to crank it a long time after sitting for a couple of days finally found a tiny crack in the fuel filter head where the fitting for the line to the pump screwed in gravity was allowing the fuel to return to the tank  and partially emptying the filter

    No matter were the leak is I think putting some pressure in the system is by far the quickest way to find a pesky leak 

     

    Paul

    • Like 2
  4. You have a leak in the return side of fuel system

    Pressurize the tank slightly to show the leak 

    A hose clamp and a piece of old inner tube over the filler will show the leak pretty quickly

    Wind the air regulator on your shop compressor down as low as it will go, once the fuel system is at 10 or 15 psi have a look all around the fuel lines for the fuel leak 

     

    Paul

    • Like 2
  5. 1 hour ago, theakerstwo said:

    you would be money ahead if you would spend a half of a day with them.Show them how and tell them how much its going to cost if they keep this up.

    And fix your oil leaks would save a fortune

    But yes, knowing how to operate them can make all the difference and if they dont then they cant really be blamed

     

    Paul 

  6. I believe that it should be master keyed so can only go in one way

    Once this is done it will need to spill timed, this is a two person job and you really need to find someone who has done this, not been smart or rude or any other such thing but it needs to be right 

    I doubt even most heavy diesel mechanics know how to do this properly 

    However your local diesel injection place probably can supply the second person and they can talk you thru it to and help you get it right 

    I have done it before but I am not confident enough to be giving instructions here

    Paul

    • Like 1
  7. 18 hours ago, mrsmackpaul said:

    I have beem asked another question 

     

    Can a Mack direct be changed into a overdrive like a Roadranger ?

    I have never looked into this as I have never had a need

     

    IMG-2117.jpg

    This doesn't even look like a Mack number to me but I dunno 

    It is definitely a Mack Maxitorque 12 speed with deep reduction on the dash

     

    Paul

    so no body knows if a Mack box can be turned into a overdrive by swapping gears and still using the same housing ?

    Paul

  8. I have beem asked another question 

     

    Can a Mack direct be changed into a overdrive like a Roadranger ?

    I have never looked into this as I have never had a need

     

    IMG-2117.jpg

    This doesn't even look like a Mack number to me but I dunno 

    It is definitely a Mack Maxitorque 12 speed with deep reduction on the dash

     

    Paul

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