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Old 31-08-2019, 04:02   #16
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Re: Ancient Yanmar 2QM15

Greetings and welcome aboard the CF, pullark.

2QM15 Service Manual (circa 1989) ➥ https://sbo.sailboatowners.com/downl...n_34429454.pdf

Parts Catalogue ➥ http://www.lsm-diesel.dk/2012/yanmar...dele_2qm15.pdf

Operation Manual ➥ https://sbo.sailboatowners.com/downl...n_55888915.pdf
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Old 06-09-2019, 05:38   #17
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Re: Ancient Yanmar 2QM15

Quote:
Originally Posted by pullark View Post
Well....I acquired a KH18 gearbox, damper/drive plate and flywheel flange housing. I can confirm that 2QM15 uniquely uses the KBW10 as standard and there is no way a KH18 transmission will fit. KH18 flywheel housing will not bolt onto 2qm15 engine block. It's significantly larger. Even damper plates are different. Input shafts are 10 teeth splines (KBW10) and 26 teeth on KH18. So, in conclusion,2QM15 uses KBW 10 trans, 3QM30 and 3QM and 2QM use KH18 trans and 2QM20 uses another trans the model number of which I'm unsure. I'm now the proud owner of a KH18 which is of no use to me but no doubt someone will pay me good money for it some day.
Cheers
You might want to look at this thread; in particular post #14

MORSE CONTROL PROBLEMS - Cruisers & Sailing Forums
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Old 19-09-2019, 17:52   #18
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Re: Ancient Yanmar 2QM15

Further information on QM gearboxes.... I sat down and waded through all the parts diagrams for the Q series Yanmars. What I've concluded is that the 3QM30, the 2QM and 3QM share common gearboxes and bell housings etc. The 2Qm20 has its own unique bellhousing but there are also two variations of the of the KBW10 gearboxes, or at least the cases are different. One has ribs at 90 degrees to shaft and the other on same plane.The 2QM15 which I have requires a unique bell housing (transmission flange) which mates the KBW10 to the engine. So my next challenge is to find the right part 177080-02030. Any leads will be much appreciated (in Aus or NZ). Would consider bell-housing and gearbox or just bell-housing.
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Old 19-09-2019, 17:59   #19
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Re: Ancient Yanmar 2QM15

I dunno if this helpful or not but I have seen gearboxes described as KBW10 and also KBW10A - I assume there is a difference but maybe it is lazy writing!
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