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Old 27-04-2012, 10:48   #1
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SAE 20 Engine Oil in Transmission for Westerbeke Dielsel?

I have a 1976 Cal 34 MK II with a Westerbeke 25 HP model four-91.

I'm a bit confused about the transmission fluid. The V-Drive is definitely Transmission Oil, but the Transmission appears to have Engine Oil in it, and the manual, while confusing, seems to support that as well. Before I top it up though, I'm hoping to get someone in the know to confirm that pitting engine oil in there is okay?
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Old 27-04-2012, 23:14   #2
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Follow the manual, don't trust a previous owner. My Westerbeke had a Hurth v drive that uses automatic transmission fluid. It says ATF in the manual and on the transmission
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Old 28-04-2012, 01:55   #3
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Re: SAE 20 Engine Oil in Transmission for Westerbeke Dielsel?

Had someone in to help me with this and got it all straightened out. Thanks.
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Old 05-06-2012, 17:22   #4
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Re: SAE 20 Engine Oil in Transmission for Westerbeke Dielsel?

I have a circa '94 Westerbeke 42B with a JS transmission. All of the manual information I have read has stated 30 SAE motor oil for the gearbox.
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Old 05-06-2012, 17:35   #5
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JS transmission removal

I have a Westerbeke 42B with a JS gearbox. I'm trying to remove the gearbox (to replace) and it will not move back more than 1/2 inch. There are no clearance issues, nothing (hose, cables, etc.) keeping it from pulling out. One source says it could be corrosion on the spline. I have worked on this for an hour so if there was any corrosion I should have worked passed it by now. Is it possible that the transmission and the bell housing have to be removed as a unit? I find this hard to believe but needed to ask the question. Anyone have a detailed exploded schematic of the JS. I have notice all documents I have seen diagrams showing the gearbox separated from the bell housing?

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