May 3, 201412 yr This primary gear is never going to come off. I started with a small puller, broke it trying, got the gear very hot and used freeze spray. Not a chance. Then I had a steel cup made so I could use a bigger puller, tried with a 10tonne hydraulic puller, nothing. This morning I was determined, I've borrow a monster puller, an impact gun, using heat and brute force, still nothing. I give up, the only way this nis ever going to come off is with a cutting disc! Its a shame, because unless I can change the crank seal, the engine is scrap.
May 3, 201412 yr Author Well you should never say never! It came off, hoorah! Thought I would give it one last go, used a fully charged battery on the impact gun, just held it on there for ages, then whack! with the hammer on the end and pop Very pleased If anyone would like to borrow the special cup I've had made,which allows a bigger puller to be used, just let me know..
July 21, 201412 yr :-) Don't forget to clean the shaft and the gear with alcohol when reassemblig it! An impressive puller, indeed.
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