Re: Galaxy w/ 140 hp I/O (1977)
Right on! I want to come and watch 12footer drop the lower on a Mercrusier and change the pump in ten!! This I gotta see!!!!!!!!!
<br />REPAIR OF WATER PUMP FOR MERCRUISER #1 OR ALPHA GEN I.<br />1)start with outdrive half tilted up, and shift in forward gear.<br />2)remove anode with allen wrench-size 5/16 or 3/8.<br />3)remove 5/16 allen bolt below anode.<br />4)remove the two 5/8 locknuts countersunk in cavition plate above prop.<br />5)remove the 5/8 mut on leading edge of drive facing up.<br />6)remove the two 5/8 nuts visible from either side in middle of drive remove drive.<br />******plug oilhole in top so oil will not drain*******<br />7)check to see if the copper water tube stayed in upper drive, put it back.<br />8)check if the plastic tube stayed in water pump,if not check copper tube.<br />9)check for 'o' ring for shaft, if missing check above seal to locate.<br />10)remove nuts and bolt that retain w/p top.<br />11)pry top up and off drive shaft, you will have to remove 'o'ring and sq ring.<br />12)lift impeller up and off of shaft. watch for key that turns impeller.<br />13)remove plate and gaskets below impeller.<br />14)if pump was run without water the top must be replaced, for maintenance#19<br />15)if base is distorted it mustbe replaced.<br />16)to change base pry it up with two screwdrivers.<br />17)replace the base gasket, base, and 'o' ring and check seals in base.<br />18)slide the base, with gasket in place, down shaft and seat it.<br />19)place the new plate with gaskets over the base large,gasket hole toward top.<br />20)slide lubricated impeller down shaft over key replaced in slot.<br />21)slide top down shaft, turn shaft while pressing top over impeller.<br />22)replace bolt and nuts do not overtighten, replace 'o' ring sq ring, and plastic tube.<br />23)check that rubber seal that asccepts the copper tube is in place in top under plastic tube.<br />24)turn shift shaft in front of drive cw while the prop turns ccw to stop(fwd)<br />******check for 'o' ring on the oil passage brtween parts******<br />25)carefully lift drive back up, line up coper tube into plastic tube<br />26)line up studs and lift gently, this is where the shifting must be alligned.<br />27)as soon as the brass connector for the shift shaft reaches the shaft use it as a tool.<br />28)turn the shift shaft with brass piece cw and prop ccw, when it stops it musr be facing forward.<br />29)if point of brass is not forward when turned lift it and change splines.repeat #28.<br />30)force the prop ccw to turn drive shaft as drive lifts till splines on drive fall in.<br />31)be sure the allen bolt for anode trim tab is in place,remove the plug you put in oil hole.<br />32)start the two 5/8 bolts for the side and snug the unit upward.<br />33)rotate the prop back and forth while shifting to check for-nu-rev shifting.<br />34)replace the rest of the 5/8 nuts(5) and tighten, if shifting is wrong go back to #27.<br />35)replace 5/16 allen bolt and replace trim tab anode faceing toward slightly left.<br />36)check oil install from bottom until it comes out of top hole.<br />37)check for leaks.<br />38)tomorrow check oil and leaks<br />39)check oil next few trips.
