Cyclone 5 heat sieze?

[swissdean]

Hi, Just under 4000 Kms on my cyclone 5 box ( cyclone p layshaft, casa end plate, .005 thou end float) and it broke down ion me last month. Got it going but it was clunking in 2nd gear so parked it up and had it shipped home. Now home and stripped to find this. Looks to have got very hot and seized. Gears were very hard to get off, almost as if layshaft too thick or gears too tight. I can’t recall it being tight when assembled last year. Any ideas / experience of what could cause this and what I can do, ie will the gearbox go again?

Cheers

[dickie]

Unless that was a tight fit when you installed it, then the heat wasn't generated by normal running in oil.

Maybe a foreign body got trapped betwixt the gear and layshaft?

Maybe the end plate pushed the loose gear and cluster too close? Thereby forcing the loose 2nd gear hard up against the layshaft?

[MickYork]

Could the end plate be slightly out of alignment ?

[Fast n Furious]

Could the end plate be slightly out of alignment ?

Definitely the first check to make. End plates that are not original to the casing can have alignment issues which will cause this.