Do you have enough room to use a crowfoot puller on the balancer? it's a press fit- - -no center bolt. Just pulling the radiator will give you more working room. 2-sheave pulleys for 235's are as scarce as honest politicians, and almost as expensive as Rolexes.

Good grief- - - -another train driver! I'm really wasting time giving advice from only 60+ years of actually making a living fixing these old rigs, and 30+ years of teaching the trade. Good luck!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!