bjlffire Posted October 4, 2009 Share Posted October 4, 2009 What can you tell me about this tranny? Mack TRL1076 5 speed manual transmissionWe are looking at a used 2000 gallon fire truck with this in it.Truck info: Model # MC686FC-1295 Serial # 1M2H144CXHM001295 Mack EM6-285 diesel engine Is it easy shifter or will these redneck volunteer fire guys tear it up?Good bad ugly?Thanks Quote Link to comment https://www.bigmacktrucks.com/topic/10908-mack-trl1076-5-speed-manual-transmission/ Share on other sites More sharing options...
HK Trucking Posted October 4, 2009 Share Posted October 4, 2009 What can you tell me about this tranny? Mack TRL1076 5 speed manual transmissionWe are looking at a used 2000 gallon fire truck with this in it.Truck info: Model # MC686FC-1295 Serial # 1M2H144CXHM001295 Mack EM6-285 diesel engine Is it easy shifter or will these redneck volunteer fire guys tear it up?Good bad ugly?ThanksIt's a very good transmission.The TRL 1076 is the same as the triple countershaft TRL107, except that one countershaft has been omitted. The case is the same as the triple countershaft TRL107, it's just that one countershaft isn't there.Regarding shifting, It's one of the simplest and easiest shifting transmissions out there. Anyone who can comprehend the principles of shifting an unsynchronized transmission will be able to shift it just fine.. Quote "If You Can't Shift It Smoothly, You Shouldn't Be Driving It" Link to comment https://www.bigmacktrucks.com/topic/10908-mack-trl1076-5-speed-manual-transmission/#findComment-41376 Share on other sites More sharing options...
bjlffire Posted October 4, 2009 Author Share Posted October 4, 2009 OK,What is unsynchronized Quote Link to comment https://www.bigmacktrucks.com/topic/10908-mack-trl1076-5-speed-manual-transmission/#findComment-41380 Share on other sites More sharing options...
HK Trucking Posted October 4, 2009 Share Posted October 4, 2009 OK,What is unsynchronizedA manual transmission in a car is "synchronized" meaning that when you shift it, you simply depress the clutch and move the shifter to the next gear. The synchronizers in the transmission "synchronize" the 2 sliding "clutch gears", to enable a clashless shift.An unsynchronized transmission has no synchronizers, and the engine RPM's must match the road speed of the gear you're trying to shift into. To achieve that, you can double clutch, or shift it without using the clutch depending on your skill level,making sure that the engine RPM's are at the same level as if the transmission was already in the gear you're shifting into.As long as the engine RPM's are correct for the gear you're shiftinginto, the shift will be smooth, if the RPM's are incorrect, it ain't going into gear.. Quote "If You Can't Shift It Smoothly, You Shouldn't Be Driving It" Link to comment https://www.bigmacktrucks.com/topic/10908-mack-trl1076-5-speed-manual-transmission/#findComment-41383 Share on other sites More sharing options...
Lmackattack Posted October 4, 2009 Share Posted October 4, 2009 Hk has it down for ya. If I can add that this trans is not ment for speed shifting. The engine pulls from 1200RPM all the way to 2100 thus you only need 5 gears to get the job done. its real easy to drive if you know the pricables of shifting a truck trans. In 1st gear you simply bring the RPMs up to 2000-2100 pull the lever out and wait untill the engine falls to around 1200-1300RPM and then hit 2nd do this for the next 4 gears. same as downshifting. As the truck speed slows and engine RPM falls to 1300. pull stick out of gear, raise engine RPM to 2000 and hit the next lower gear. Simple! Quote Link to comment https://www.bigmacktrucks.com/topic/10908-mack-trl1076-5-speed-manual-transmission/#findComment-41388 Share on other sites More sharing options...
bjlffire Posted October 5, 2009 Author Share Posted October 5, 2009 Ok, So it is just like any other big truck tranny the guys have been using?Thanks Quote Link to comment https://www.bigmacktrucks.com/topic/10908-mack-trl1076-5-speed-manual-transmission/#findComment-41419 Share on other sites More sharing options...
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