c-mac Posted July 2, 2016 Share Posted July 2, 2016 I wish I had more to go on but, I Just got a 2010 Granate Maxitorque dumped on me with the tranny already on the floor. I got four different stories about what was wrong with it. I finally got in touch with the fella that pulled it down and he said " it had all kids of chattering noise in the tranny when coming off the clutch." He also said it had fine metal in the oil that looked like metalic paint. I pulled both top covers and inspected and worked all the gears. saw no broke parts. But what I did find was the input shaft gear has a lot of slack or backlash verus the input shaft, meaning if I hold the input shaft the gear will rock back and fourth about .020. I pulled the spiral ring that holds the gear to the input shaft, pulled the gear off and inspected the cogs. to my surprise they didnt look worn but the lock ring groove had pastie fine metal in the area where the ring goes. I have repaired automotive manual transmissions but nothing like this. I really can't see there being any play in the input haft gear to the input shaft. All the trannys I worked on the the shaft and the gear are one piece. I have also ispected the clutch. It appears to be ok. Thanks in advance for any help! Quote Link to comment https://www.bigmacktrucks.com/topic/45891-maxitorque-input-shaft-gear/ Share on other sites More sharing options...
steeler Posted July 2, 2016 Share Posted July 2, 2016 A little movement in the input shaft is normal, as is the caked up gunk inside the gear. Did the truck still pull itself, just chatter? Quote Link to comment https://www.bigmacktrucks.com/topic/45891-maxitorque-input-shaft-gear/#findComment-338135 Share on other sites More sharing options...
c-mac Posted July 2, 2016 Author Share Posted July 2, 2016 (edited) Not sure if it would pull itself. The guy who checked it out is on vacation. I called him and he said the truck was towed in from the field. He don't know why but someone tried to adjust the clutch, the pedal was almost all free play . He adjusted the clutch to where it felt normal, reinstalled the driveshaft when he went to pull away he said it lugged the engine down and chattered loudly. What I saw when inspecting the transmission is, I pulled the input housing, the gear that's held on by a spiral ring had play in all directions. It would move up and down and would rock back and forth while holding the shaft still. I have gave the clutch a good looking over. This is a remack remanufactured transmission with very few miles on it capturedvideo.MOV Edited July 2, 2016 by c-mac Quote Link to comment https://www.bigmacktrucks.com/topic/45891-maxitorque-input-shaft-gear/#findComment-338162 Share on other sites More sharing options...
mrsmackpaul Posted July 2, 2016 Share Posted July 2, 2016 I dont think think from what I have read there is anything wrong with the transmission sounds like the clutch brake was torn of the input shaft (the chattering noise) and when the clutch was adjusted the bolt wasnt seated back in the clutch properly and went straight out of adjustment in a big way There is a fare bit of movement in those input shaft until the other end is back in the crank Paul Quote Link to comment https://www.bigmacktrucks.com/topic/45891-maxitorque-input-shaft-gear/#findComment-338171 Share on other sites More sharing options...
c-mac Posted July 2, 2016 Author Share Posted July 2, 2016 It's not the shaft that concerns me it's the play in the gear on the transmission side. capturedvideo.MOV Quote Link to comment https://www.bigmacktrucks.com/topic/45891-maxitorque-input-shaft-gear/#findComment-338178 Share on other sites More sharing options...
steeler Posted July 2, 2016 Share Posted July 2, 2016 With the input shaft removed, the gear will flop around quite a bit in the shaft, once it's installed back in the trans, the countershaft gears will center it up. If that makes sense. I couldn't watch the video on my phone. Quote Link to comment https://www.bigmacktrucks.com/topic/45891-maxitorque-input-shaft-gear/#findComment-338184 Share on other sites More sharing options...
Dirtymilkman Posted July 2, 2016 Share Posted July 2, 2016 Sounds like the piolet end is flopping in the crank a little Quote Link to comment https://www.bigmacktrucks.com/topic/45891-maxitorque-input-shaft-gear/#findComment-338189 Share on other sites More sharing options...
mrsmackpaul Posted July 3, 2016 Share Posted July 3, 2016 1 hour ago, c-mac said: It's not the shaft that concerns me it's the play in the gear on the transmission side. capturedvideo.MOV But if you look inside the gear or on the out side of the shaft is it worn doesnt matter what we think it should be if it is worn its stuffed but you should be able to see the wear marks on it I would think it will have a fare amount of movement in it even when its new Maybe go to your local truck parts person and grab the shaft and gear off the shelf and have a look at a new set ??? Paul 1 Quote Link to comment https://www.bigmacktrucks.com/topic/45891-maxitorque-input-shaft-gear/#findComment-338198 Share on other sites More sharing options...
steve p Posted July 3, 2016 Share Posted July 3, 2016 that's normal movement that are not tight on the shaft. Quote Link to comment https://www.bigmacktrucks.com/topic/45891-maxitorque-input-shaft-gear/#findComment-338218 Share on other sites More sharing options...
GaryMac Posted July 3, 2016 Share Posted July 3, 2016 Hello Just for interest we had a noisy gearbox awhile ago and we found the engine crankshaft torsional vibration damper was damaged. New damper and was a totally different truck. Regards Gary Quote Link to comment https://www.bigmacktrucks.com/topic/45891-maxitorque-input-shaft-gear/#findComment-338222 Share on other sites More sharing options...
c-mac Posted July 18, 2016 Author Share Posted July 18, 2016 Update...After inspecting the innards of the tranny without tearing it down we reinstalled it. The splitter works fine sitting still, with the switch up it is in high, but when you shift from 5th to 6th driving it goes to neutral. Its a mind boggleing thing. Quote Link to comment https://www.bigmacktrucks.com/topic/45891-maxitorque-input-shaft-gear/#findComment-339563 Share on other sites More sharing options...
steeler Posted July 19, 2016 Share Posted July 19, 2016 (edited) Sounds like synchronizer is bad. Any grinding sounds when you go to 6th? Edited July 19, 2016 by steeler Quote Link to comment https://www.bigmacktrucks.com/topic/45891-maxitorque-input-shaft-gear/#findComment-339668 Share on other sites More sharing options...
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