gibbo1975 Posted June 15, 2010 Share Posted June 15, 2010 Sorry to keep asking silly questions folks but ive just filled my dt up with water after a complete restrip and rebuild to sort crank bearings out. When taking the r/h side casing off again for a diff problem i noticed it had water in it. Is there sum sort of rubber seal i need to put between the crank casing and main casing to to seal the water off from the oil ?????? I have used a gasket to join the casings. I bought a full gasket kit whilst rebuiling the engine and it comes with 3 rubber O shaped seals. A small black seal and 2 larger redish seals do i need to take my water pump off and use the black seal in the casing??? And can any1 tell me what the other redish seals are for please. MANY THANKS IN ADVANCE TO ALL (IF ANY) REPLYS Link to comment Share on other sites More sharing options...
Vez Posted June 15, 2010 Share Posted June 15, 2010 Sorry to keep asking silly questions folks but ive just filled my dt up with water after a complete restrip and rebuild to sort crank bearings out. When taking the r/h side casing off again for a diff problem i noticed it had water in it. Is there sum sort of rubber seal i need to put between the crank casing and main casing to to seal the water off from the oil ?????? I have used a gasket to join the casings. I bought a full gasket kit whilst rebuiling the engine and it comes with 3 rubber O shaped seals. A small black seal and 2 larger redish seals do i need to take my water pump off and use the black seal in the casing??? And can any1 tell me what the other redish seals are for please. MANY THANKS IN ADVANCE TO ALL (IF ANY) REPLYS No such thing as a silly question imo. Ok from memory, the black o-ring is for the thermostat housing . The 2 red ones are for the power valve end caps. The small black seal may be for the coolant transfer pipe that runs across the front of the engine. There should be a seal on the water pump on the clutch housing and they are a known fail point on DTR's as this is the only way water can enter the gearbox oil. ( you wont get one of these in a gasket kit) http://motorcycleproducts.co.uk/catalogue/water-pump-seal-yamaha-dt125r-199003-p-158164.html < out of stock till July 5th though, you may have to dig around for one. Vez. Link to comment Share on other sites More sharing options...
gibbo1975 Posted June 17, 2010 Author Share Posted June 17, 2010 Thanks very much Vez. PPl on here are so great and very help full id be lost with out this site. Link to comment Share on other sites More sharing options...
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