Raw water pumps are all basically the same. I think it can be done on your level, take your time and use your phones camera to document each step. When taking it apart lay the parts out in order of disassembly. Reassemble inreverse order. The parts break down is usually a good indication of how it all goes together. Just make sure that the seals go together with the springs away from each other. One seals out water the other oil. Clean the shaft with very fine sandpaper (400+ grit or red scotch bright)and lube the shaft with a light coating of grease during assembly. Small smooth groves are not critical. But there should be no sharp edges. The seals should be interchangeable. Check youtube for a video. They have them for everything. Sorry for jumping all over I am typing this on my phone. Good luck. Doug MountjoysvPegasusLF38 just west of Ballard, WA. ------ Original message------From: Charlie Nelson via CnC-List Date: Thu, Aug 13, 2015 11:12To: cnc-list@cnc-list.com;Cc: cenel...@aol.com;Subject:Stus-List Water pump seal replacement My Beta 28 HP diesel, circa 2001, has developed a sea water leak on the engine side/aft 'end' of the Jabasco (I think) pump which is driven directly by the engine,not by a belt. This engine has a primary coolant which is cooled by this water pump circulating sea water thru a heat exchanger. BTW, the front/forward side of the pump, whichhas a speed seal plate on it and from which the impeller can be changed, is not leaking at all. According to Beta NC (located fortunately about 15 minutes from my boat!), I need to replace the shaft seal(s?), assuming the shaft is not scored, etc. My interpretation of the exploded parts diagram is that the pump, once disconnected from the inlet and outlet hoses and block(?), should slide off the shaft,exposing the seals for removal and replacement. Murphy being a sailor, however, I have visions of the entire shaft either coming out or not being able to remove the pump without a wheel puller, etc. Although they claim it can be done without a diesel mechanic or yard involved, I am a little reluctant to do it since if I can't get it back together,I might not even be able to move the boat to the yard (about 1/4 mile away) since I might not have any secondary water cooling. Has anyone on the list done this for a Beta engine and if so, was it a reasonable job for what I like to call 'operator maintenance'or should it be attempted only by someone at the 'shop level' maintenance? I have looked on-line and none of the discussions are about doing this for a Beta--lots of stuff on Perkins, M-4, etc. Thanks, Charlie NelsonWater PhantomC&C 36 XL/kcb cenel...@aol.com
_______________________________________________ Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go to the bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com