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Evinrude 5.5 hp question

C

Charley S

New member
Replacing Water Pump: I replaced the water pump and plate along with the cast bearing plate. Is there a gasket between all three parts/ 3 gaskets? Also, how is the shaft brass bearing in the cast plate get lubrication? The first time I tried to start it, this bearing and shaft practically ceased up due to lack of lubrication. The bearing is at least 1"above the high level plug in the lower unit. This outboard is a model 5402B
 
There is a gasket between the bearing plate and the gearcase.----When the gearcase is properly filled the bushing gets plenty off oil.------And if the spring in the shock absorber below the plate is broken you will have problems there.-----Are there rub marks / damage marks on top of that shock absorber ??----Those 1964 models are just a sweet running motor when properly tuned.
 
Thanks for your quick reply. There is no spring below the plate. The shaft simply slides into the lower unit shaft adaptor with two flats on the shaft. Do you know if there should be a gasket between the bearing plate and the water pump plate? And then another gasket between the water pump plate and plastic housing? The diagram doesn't show one but it seems there should be. IMG_6449.jpgIMG_6450.jpg
 
I know what your motor looks like.----There is a spring inside that adapter !!!----If you are installing the newest waterpump complete kit as used in the 1979 , then there is a gasket between the plastic housing and the stainless plate.----Just look it up for the 1979 model 6 HP.----Before you ask that is essentially the same motor save for electronic ignition.---And it does NOT have that shock absorber in the 79 models.
 
racerone said:
I know what your motor looks like.----There is a spring inside that adapter !!!----If you are installing the newest waterpump complete kit as used in the 1979 , then there is a gasket between the plastic housing and the stainless plate.----Just look it up for the 1979 model 6 HP.----Before you ask that is essentially the same motor save for electronic ignition.---And it does NOT have that shock absorber in the 79 models.
Click to expand...

Thanks again for your reply. I did look up the 1979 6 hp and you are correct. The water pump I purchased is the same as the 1979 motor. The only difference I see in the gearcase between the 1979 and the 1964 model is the connector/main drive shaft extension between the lower bevel drive gear and the upper drive shaft so that the water pump can be lifted out of the gear case as an assembly to facilitate replacement. This extension is part number 10 on the picture I sent you.
Im going to reassemble the unit today with only the two gaskets(one below the bearing plate and one between the plastic water pump housing and the sst water pump plate-none between this plate and the bearing plate) I assume this connection will be under water and doesn't mater if water enters the suction side of the pump. Also, according to your post the brass bearing in the plate will receive lubrication from the lower unit even though it is above the high level mark.
As far as the "shock absorber" I don't think we are on the same page! The only two parts inside the bearing plate are the brass bearing on the bottom side and the Lip seal on the upper side. You said there was a shock absorber spring inside. The only spring inside is the spring on the lip seal that holds the rubber lips against the shaft.
Thanks again for your help
 
Sorry I have to be blunt here.-----Simply put YOU are not on the same page.----I worked on these motors 50 years ago.----There is a spring INSIDE the assembly that the driveshaft slips into.-----I likely have 10 or more of those lower units kicking around.
 
OK, I respect your answer but if we're talking about the bearing plate under the water pump I don't see a spring. I have two, one from Marineengine was completely assembled …. no spring. We have to be talking about different plates. You called it a shock absorber, what is it absorbing? Can you send a picture or diagram?
 
I try just once more.----I am NOT talking about the bearing plate / bushing.------The adapter piece that the driveshaft goes into ( shock absorber ) below the bearing plate is an assembly.-----It is NOT one piece.----It has a spring inside it.-----That spring has been know to break and jam up the lower unit !!
 
Just a couple of FYI for anybody reading this.

The gearcase oil lubricates the bearing plate by virtue of being thrown around/churned up by the rotating gears. An air space is intentional to allow for expansion/contraction.

The water pump is not submerged when motor is running above slow idle. Exhaust blows the water out of the space surrounding the pump. So even though there is no gasket under the ss plate, the surfaces at least need to be clean. And yes, later instructions say to apply a sealer of some kind between the plate and gearcase as an added leak preventer to keep exhaust from entering the pump.
 
Thanks guys, it's all clear now. A picture is worth a thousand words. Thanks fdrgator for posting the picture and answering my original question on the three gaskets. Racerone: I assume you think I'm and idiot,I've been called worse. For what it's worth, Im not a shadetree mechanic, Im a retired engineer with 50 years experience in bearings, seals and mechanical designs. I have ten patents in products that you use every week. ie. refueling your car, truck and boat.
Sorry we had problems communicating. I do appreciate all you help.
 
I think outside the box too some times.----Trying to convince the near 10 year old grandson to engineer a factory.------Drive trucks full of grass and hay and dump them into a hopper.----Pump in truck loads of pure clean water.------Add bags of a few natural enzymes / bacteria / bugs and other origins of life.-----A few spouts / conveyors at the other end of the factory to spit out various products.-------Butter / cheddar cheese / Swiss chees / butter milk / skim milk / sour cream.----All at the push of a button.-----He is quite smart and I think he can do it.
 
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