Snap ring

Snap ring
ISO 50 f/3.5 1/60s 7.3 mm

Removed

Removed
ISO 50 f/3.5 1/60s 14.9 mm

My first try at removing the snap ring failed... my cheapy convertable snap ring pliers wouldn't open the ring enough to remove. Sunday I found a pair of snap ring pliers that looked like I could abuse into opening far enough. I was correct, snap ring removed.

Ready for heat

Ready for heat
ISO 50 f/4.1 1/60s 29.2 mm

Heat gun too slow

Heat gun too slow
ISO 50 f/2.8 1/60s 7.3 mm

I first tried to heat the flange with a heat gun. Fail! Perhaps it would have done the job had I more patience. Instead I put the heat gun away and grabbed the MAPP gas torch. The RepROM calls for the flange to get to 100-110 C before pulling. I got it that hot as reported by my non-contact thermometer. I couldn't, however, quite pull the flange off although I thought it budged a bit.

Flange removed

Flange removed
ISO 50 f/2.8 1/60s 7.3 mm

Removed with helper

Removed with helper
ISO 71 f/3.5 1/60s 14.9 mm

I grabbed my slide hammer puller and check out if the holes in the adapter for pulling harmonic balancers would fit. Yep. I re-heated the flange, screwed in the adapter using the wheel lug screws, attached it to the slide hammer, and with a bunch of gentle taps the flange was removed.

Mapp gas much quicker

Mapp gas much quicker
ISO 50 f/2.8 1/60s 7.3 mm

These are the tools that got the job done. Given the hollow axle, I could feed the slide hammer shaft in from the other side of the bike if I need a little help installing the new flange. I might not need the help, though, as I'll be able to heat the new flange without getting the axle tube warm.

Old and New

Old and New
ISO 50 f/3.5 1/60s 9.6 mm

Old and New again

Old and New again
ISO 50 f/4.0 1/125s 12.6 mm

Heating

Heating
ISO 50 f/3.5 1/60s 12.6 mm

The new part came in yesterday. The first two images show the slight differences. I threw the part in the oven to get it good and hot while installing my rebuilt rear shock. Either I didn't let it sit long enough or didn't have the oven hot enough as the part did not want to slide on, even with gentle taps from the slide hammer. I knew enough that hard taps were bad. I'll try again when I get time, later, probably using the torch again to get the flange good and hot.