barkstar Posted October 5, 2013 Share Posted October 5, 2013 Hi i have a 18 spd Mack box and i parked it up for 3 weeks , jump back in it and had no clutch ,can't get any gears at all.A friend of mine said it must be a siesed spiggot bearing as we tried to adjusted the clutch with no luck, all the adjustment bolts move and adjust the peddle but still no clutch, this clutch and box has only done 275000 klm, any seqestions would help before i pull the box outtks Quote Link to comment Share on other sites More sharing options...
24vman Posted October 5, 2013 Share Posted October 5, 2013 Pressure plate could be stuck to the flywheel. Have somebody push the clutch pedal and See if it's disengaging. Quote Link to comment Share on other sites More sharing options...
barkstar Posted October 5, 2013 Author Share Posted October 5, 2013 took the inspection cover off and adjusted the clutch in and out , you can see every thing move but still no clutch, even adjusted the cable to give more pull nothing Quote Link to comment Share on other sites More sharing options...
MACKTRUCKS4 Posted October 5, 2013 Share Posted October 5, 2013 Do you mean when you push the pedal down, you can't get it into any gear? If so, sounds like the clutch is stuck to flywheel. Start the truck in gear and drive it around with the clutch pedal pushed in but not to the floor. Sometimes it takes a while, drive up and down hills if you can. 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...
theakerstwo Posted October 5, 2013 Share Posted October 5, 2013 took the inspection cover off and adjusted the clutch in and out , you can see every thing move but still no clutch, even adjusted the cable to give more pull nothingHow did you come up with the ideal that the clutch got out of adjustment while setting?Your now going to have to adjust it back like it was to find out when it is working. Like been said its sounds as if the disc is stuck to the pressure plate.It it will not move any in any gear then there is air problem and back box is out of gear. Quote glenn akers Link to comment Share on other sites More sharing options...
barkstar Posted October 6, 2013 Author Share Posted October 6, 2013 i will try starting it in gear and see if it works because it will not go in any gear while it is runningthanks Quote Link to comment Share on other sites More sharing options...
gearhead204 Posted October 7, 2013 Share Posted October 7, 2013 did the clutch pedal suddenly have more free pedal before you adjusted it? I have seen clutch discs explode and pile up in the clutch housing. if starting in gear don't free it up this might be the problem Quote Link to comment Share on other sites More sharing options...
Dirtymilkman Posted October 7, 2013 Share Posted October 7, 2013 Ummm.....clutch brake out? Quote Link to comment Share on other sites More sharing options...
Back In Black Pulling Posted October 10, 2013 Share Posted October 10, 2013 Just had a divider plate crack and would not let clutch disengage . Quote Link to comment Share on other sites More sharing options...
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