1984 Yamaha Venture Motorcycle Engine Removal - Page 6 of 8

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The cases drop together (with care to ensure that it IS easy, or something is out of place). Bolts on the lower cases and upper cases hold the two sides together firmly. I use ThreeBond to ensure that the cases do not weep. You can see the 8 main crankcase bolts ready to be tightened.


The oil gallery has been dropped in place. The oil pump will be added after these bolts are tightened. Then the sump is put on, and the bottom of the engine is now completely assembled. I roll the engine up-side-up and torque the upper crankcase bolts to specification.



The clutch housing needs to be tightened onto the shaft that it rotates on. We will need a "special tool" to hold the basket from turning while we provide the correct tightening torque.



Once again, wood is my special tool maker. I drill a hole in the lumber so that I can fit the socket through, and fasten two arms (purchased for 29 cents each) so that they slide into the slots on the clutch basket. Then torque to 600 inch pounds, by far the highest torque of any bolt on this engine.


This is the setup. The torque is 50 foot pounds, so I use the empty frame of the Venture to hold the piece of lumber from turning. There is a lock tab under the bolt which must be bent over to ensure this bolt does not move. I bend it over with a screwdriver. I re-install the clutch plates, and torque down the pressure plate. The clutch housing can now be installed. The engine is ready to be re-installed in the bike.


I continued by checking the valve clearances.