TRX250R.ORG
Workshop => Engine and Bottom End => Topic started by: countryboy9799 on February 07, 2015, 09:55:21 AM
-
Is the water pump supposed to turn freely or should there be a little resistance? It doesn't turn hard but its not like a car water pump that turns more freely. I am guessing that seal with the spring on it makes it turn harder.
-
I suppose to there is no lubrication yet and once I put it together the antifreeze will lubricate it some.
-
When installing we always put a dab of petroleum jelly on the mechanical seal and the white porcelain it rubs against to ensure they do not wear out on start up before the water/antifreeze gets in there.
-
I looked around and couldn't find any Vaseline so I used motor oil. Does that sound right for it to be somewhat resistant to turn? My guess is the spring pushes on that seal so it will make it someone resistant to turn.
-
It should have some resistance. Did you install the copper wash as shown in the diagram?
Number 11
(http://i532.photobucket.com/albums/ee328/RideRed187/250R%20Pics%20Parts/WaterPumpDiagram.jpg)
-
Are you sure the copper washer isnt #10? I am pretty sure that 11 was a black machine type washer and the copper one was on the impeller.
-
My bad! I had them inverted.
(http://i532.photobucket.com/albums/ee328/RideRed187/250R%20Pics%20Parts/imagejpg1-4.jpg)
-
Good, at least I dont have to pull that again because that black washer is the one I put on the shaft before I put the impeller on, then the copper one went on the outside of the impeller. With any luck I may have it running tonight.
-
Yes it should not spin freely. Some slight resistance. The spring is pushing on the mechanical seal. Thats how it seals. A drop of oil or grease won't hurt. Just so it has some lube before it gets running.
-
(http://forums.trx250r.org/vbulletin_imports/1262_4522_2017-04-18_479.jpg)
Well I have some leaking out the weep hole. Now I am wondering if I put something in wrong or if I am missing something. It was leaking pretty good so I turned it over a few times to help seat the seals and it did slow down but it did not stop. Anyone have a good pic of how that black seal with the spring was supposed to go on?
-
Did you put the new porcelain in with the rubber behind it like post 7. We don't have a thread with pics. It took one guy 2 attempts http://trx250r.org/threads/3522-Water-pump-replacement-tricks?highlight=water+pump+rebuild I lost my rebuild thread on .net. Will have to do another on on this site.
-
The only thing I replaced is the bearing. It sat for the last 7 years and didn't leak. I might have to get a kit but would like to try it one more time. If you look at the pic that is the way I installed it, is the mechanical seal the right way? The right side went in first. The way its laid out is the way it went in. Is there anything missing?
(http://forums.trx250r.org/vbulletin_imports/1262_4527_2017-04-18_3407.jpg)(http://forums.trx250r.org/vbulletin_imports/1262_4528_2017-04-18_1008.jpg)
-
The mechanical seal is all one piece. The metal part of it is still in the clutch cover. We cannot tell from the pic which side you have facing the porcelain. Then again no one has seen the other side as it is attached to the metal piece in the clutch cover. But it does look correct to me. I believe as the impeller turns your seal is turning also.
-
So which one is the mechanical seal? As far as I can tell there is a white seal that is in the impeller, I never took that out. Then you have a black rubber piece with a spring on it. The metal part in the clutch cover I never took out either. Can you explain whats what? I took some closer pics. If you look at the black rubber piece with the spring on it I put the right side in the clutch cover first, that end is more pointed. It looks like that black rubber piece could be replaced, that doesn't spin I don't believe. I think only the white piece in the impeller spins. Which part do you think is leaking?
-
(http://forums.trx250r.org/vbulletin_imports/1262_4530_2017-04-18_9650.jpg)(http://forums.trx250r.org/vbulletin_imports/1262_4531_2017-04-18_40.jpg)
-
You see that piece in the clutch cover still?
Its hard to tell but you will see some blue threadlocker around the outside edge of the metal piece he is talkin about.
-
Ok, sounds great. So do I have to use a sealant to seal the new metal piece?
-
If you look where the pencil is on my impeller shaft you can see a groove on it, it will catch my fingernail. Do you think I should replace that too?
(http://forums.trx250r.org/vbulletin_imports/1262_4532_2017-04-18_1731.jpg)
-
Thanks for the link spirit, got one ordered.
-
That metal part did not come out easily, that blue sealant they used really locked it in there. I did put some small gouges in the clutch cover though, do you think I should take some fine sand paper and get the aluminum smooth and/or use some type of sealant. I was thinking some kind of permatex silicone type sealant.
(http://forums.trx250r.org/vbulletin_imports/1262_4533_2017-04-18_8453.jpg)(http://forums.trx250r.org/vbulletin_imports/1262_4534_2017-04-18_516.jpg)(http://forums.trx250r.org/vbulletin_imports/1262_4535_2017-04-18_1098.jpg)
-
That metal part did not come out easily, that blue sealant they used really locked it in there. I did put some small gouges in the clutch cover though, do you think I should take some fine sand paper and get the aluminum smooth and/or use some type of sealant.
The new seal comes with the blue sealer on it. You just want the sand any ridges you may have made taking the old one out. Usually we press them out from the other side in an arbor press without causing damage. Its a little tricky getting the new one in. Some use sockets to press in and others pull it together with a bolt and washers. WP shafts are real spendy. I would just touch that one up with 400 paper and hope it seals OK
-
Well parts should be here today or tomorrow, how long does that thread locker take to set before I can put coolant back in?
-
Well parts should be here today or tomorrow, how long does that thread locker take to set before I can put coolant back in?
The thread locker does not set. It is permanent. Meaning it stays good from when it was made. When you take the old one out from 30 years ago it is the same as when they installed it at the factory. So you do not have to wait at all.
-
(http://tapatalk.imageshack.com/v2/15/02/11/19b0c60a7d25bbf824fef6620ea63f87.jpg)
So the Yamaha and Honda seals are the same? That's what Toledo Honda said.
Any special tricks to putting the mechanical seal in without damaging it? I don't have a press.
-
Well we ended up going to my parents today to visit them and my dad has a hyd. press. We got the yamaha seal pressed in and the water pump put back together. We used some non hardening permatex form a gasket on the mech. seal just in case. I dont have it back on the R yet but I did fill it with water and blew in the hose end and it didnt leak so hopefully tomorrow I should have it running again.
Still have front tires to deal with yet and hopefully thats it for now.
-
Good to hear Scott, sounds like you'll be in good shape.
One more thing to check with the clutch basket install, is to check the clearance on the back of the basket where the crank drive gear spins the basket. Some aftermarket baskets like Hinsons, have a thicker radius on the back corner of the basket. With different years / gear thicknesses, and different aftermarket basket dimensions, its just a spot worth looking at before you put the cover on.
-
So check to make sure it doesn't rub?
-
yup
-
Will do, thanks