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Old 20 June 2008, 15:08   #11
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Country: UK - England
Town: The wilds of Wiltshire
Boat name: WhiteNoise/Dominator
Make: Ballistic 7.8/SR5.4
Length: 7m +
Engine: Opti 225/Yam 85
MMSI: 235090687/235055163
Join Date: Jul 2005
Posts: 12,689
Originally Posted by EllWilcox View Post
Thanks for the advice by the way.
With regards to pumping air in to the gear box where abouts should i pump the air into and also what shall i use??? Anything in particular?? Also how can i check if it still selects gears etc...??

Finally where abouts should is a good place in the uk, either online specifically or down south i.e dorset or hampshire areas? where i could find the service manual or workshop manual???

Thanks for all the help.
Buy a manual. before you try anything or you'll break it trying anything like that.I can't emphasise that enough.
You won't have the gear to test it unless you've got access to specialist equipment and if you don't already know how to check it goes in and out of gear you shouldnt be messing without a manual..

Any Yamaha dealer will be able to order you one.
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Old 23 June 2008, 11:25   #12
Country: USA
Town: Oakland CA
Length: 3m +
Join Date: Feb 2005
Posts: 6,653
What Nos said.

You want to be able to check the seal integrity without blowing them out (though, I suppose, then you'd know you had to replace them...) Which means you have to know the spec they're supposed to hold. Which will be in the shop manual, along with a description or part number of the gauge and plug used to perform the test, and the procedure for doing so.

As to saving a bit of money by doing it yourself: I could probably find you the steps and equipment required to, say, perform an appendectomy; I certainly wouldn't suggest you do it yourself. Some things are best left to others better equipped and more experienced and skilled.

But, to answer your question, you pressurize and read through the gear oil fill hole. Special diagnostic tool, as far as I know (I've never needed to have it done, but would take it to a shop if it was required.)


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