What tools will you need to tear down your TRW 500? So here ya go. You will need two extractors/pullers to disassemble your TRW 500. This is a little confusing so bear with me. If you are smart you have found the workshop manual for your TRW online. If you have not, then email me. The official manual lists 3 pullers; the cam shaft, the crank shaft, and the clutch hub puller. The part numbers listed in the manual are D178/183, ST/1940, and D.50, respectively. These numbers mean nothing to Triumph parts houses scattered around the glode. My guess is that these part numbers where based on military specs, as the bike was never sold by Triumph on the civilian market.
But never fear, I have found the civilian equivalents to two of these pullers, and a work around for the third! First, for the the camwheel you will want to use the equivalent puller for the crank pinion of the unit 'C' model twins ONLY, meaning 500cc, which have a threaded pinion. Sorry, I don't have an official part number. If I find one, I will be sure to post it.
For the hub you will want the standard clutch hub puller 46-1982 which is the puller for the 500 650 and 750.
I was unable to find the puller for the crank shaft wheel, but after a stroke of genius I discovered (I was not the first) you can thread the clutch hub onto the cam gear, then use a set of 3 jaw pullers to remove this gear. Here a few pics...
Clutch Hub
Clutch Hub on Gear
3 Jaw Puller
I finished up the tear down of the motor last week. The next post will include notes on that process.
