Slowly but surely, my deferred maintenance list is approaching the drive train. After perusing the Allison web site I settled on this manual as most likely to be the one I need. What I want to do is change the oil and filter and check the external stuff, throttle cable, governor, and speedometer.
Can anyone here tell me if this is the manual I need to buy? Preventive Maintenance Manual PM 2572E.
I simply ordered the filters for the 643, internal and external .
I also loosened the throttle cable to get it to upshift sooner.
Looks like lubing the little speedo drive box is a good idea .
MM
I've spent most of my life so far working on antique equipment for friends. I learned early on to love the factory service and parts manuals.
The speedo drive box is high on my gotta look at list for just that reason. In the meantime I purchased a GPS heads up display speedometer.
Check on the bluebird website, that's where I found the 3208 service manual that ii posted n the forums media section, media section may have 643 litireture also