OK guys,
DT969A and Autocar U7144T use same front axle, Timken F-2090-W-73. WLF front axle is Timken F-3200-W, a heavier unit.
Rear axles are all different.
With regard to brakes however, both DT, Autocar and WLF appear to use the same rear brake diaphragm chamber, a Westinghouse Bendix Type B having dia. 9 3/16".
The DT and Autocar both use Type E front diaphragm chamber, dia. 6".
Norman, the WLF uses a conventional piston/cylinder type front actuater, dia. 4 1/2" - not a diapragm type. So you may need to source N.O.S. kits for these, unless we can trace a current part number from the USA?
Conclusion? John's rear diaphragm Bendix part number should be good for all three trucks, and the front should be OK for the Autocar.
:tup::