Very odd byt water is pushed out from the small drilled hole in the main rod where the shaft goes through.
Waterstream is also coming out from the tell tale in the exhaust pipe side.
Enging difficult to start but can be kept alive.
The impeller ( large diameter) and gear box is of WW ll type poished aluminum with material certificat numbers stamped in the casting.
Whats wrong?
my 102 i couffing and water comes out of tube part 1356
Moderators: John@sos, charlesp, Charles uk, RickUK, Petergalileo
sounds like you are getting water somewhere in your barrel. water should only come out through the telltale. That would be why it is hard to start as they don't like running on a water mix
If the 102 is running right it is very easy to start and will run forever.
Check your base gasket at the barrel, it is easy to replace
If the 102 is running right it is very easy to start and will run forever.
Check your base gasket at the barrel, it is easy to replace
Hi,
Am no expert but as there have been few replies here is my thinking. Feel free to jump in or correct me experts!
First I agree with Chris's suggestion but have a couple of other possibilities:
If you look at the line drawing on the main S.O.S. site ( under 'ID your seagull then click on the 102 button ) you can see that the water pump rotator is separated from the drive shaft tube only by a single plain bearing, if that were very worn then I would have thought it would allow some water to pass into the drive tube, fill it up and hence come out of the hole you mention. Does your gear box have the oil nipples? is there one just for that top bearing? If it does have one for that top bearing you could try temporarily giving it a couple of squirts of grease to see if helps to seal it and improve matters. DO NOT ever put grease in the gearbox itself though!!
If you don't have a nipple for that bearing I think you may need to remove the drive tube and check for wear. Take care though, with all that water around the drive shaft itself is likely to be rusted on ( see other thread re: Driveshaft removal! )
Another thought is are you trying to run the engine too low in the water? if the water is too high it causes too much exhaust back pressure and difficulties in starting, it might also help to push water past worn bearings and into the drive tube as well.
Only other problem I can think of is possibly a crack in the gearbox / water pump casing, I keep everything crossed it is not that!
Am no expert but as there have been few replies here is my thinking. Feel free to jump in or correct me experts!
First I agree with Chris's suggestion but have a couple of other possibilities:
If you look at the line drawing on the main S.O.S. site ( under 'ID your seagull then click on the 102 button ) you can see that the water pump rotator is separated from the drive shaft tube only by a single plain bearing, if that were very worn then I would have thought it would allow some water to pass into the drive tube, fill it up and hence come out of the hole you mention. Does your gear box have the oil nipples? is there one just for that top bearing? If it does have one for that top bearing you could try temporarily giving it a couple of squirts of grease to see if helps to seal it and improve matters. DO NOT ever put grease in the gearbox itself though!!
If you don't have a nipple for that bearing I think you may need to remove the drive tube and check for wear. Take care though, with all that water around the drive shaft itself is likely to be rusted on ( see other thread re: Driveshaft removal! )
Another thought is are you trying to run the engine too low in the water? if the water is too high it causes too much exhaust back pressure and difficulties in starting, it might also help to push water past worn bearings and into the drive tube as well.
Only other problem I can think of is possibly a crack in the gearbox / water pump casing, I keep everything crossed it is not that!
This WWll 102 has two grease or what ever nipples on the gearbox side, have not filled the with grease but the gearbox filled with 140 sae oil.
engine runs fine when dry for som 30 sec, so I assume the water is the problem.
1 at what water leve should the motor run?
2 new gasket is in place
3 so is the seal really between pump and driving shaft made up of a bearing tolerance... I thought you had rough seas in the WW ll !...
Thank you for really good explenantions, I think this will be sorted out after a couple of rounds with you experts!
Thanks !
engine runs fine when dry for som 30 sec, so I assume the water is the problem.
1 at what water leve should the motor run?
2 new gasket is in place
3 so is the seal really between pump and driving shaft made up of a bearing tolerance... I thought you had rough seas in the WW ll !...
Thank you for really good explenantions, I think this will be sorted out after a couple of rounds with you experts!
Thanks !
1. Water level must be above the cavitation plate but no more than 2 inches up the exhaust tube as measured from the bottom of the tube.
If you are running in a tank and have a clutch then run it in neutral as the prop wash can cause circulation problems uncovering exhaust etc which is a reason why people often over fill the tank!
3. I believe the seas were indeed rough in WWII but all the 140 grade oil leaking from seagulls gearboxes calmed it down
If you are running in a tank and have a clutch then run it in neutral as the prop wash can cause circulation problems uncovering exhaust etc which is a reason why people often over fill the tank!
3. I believe the seas were indeed rough in WWII but all the 140 grade oil leaking from seagulls gearboxes calmed it down
The problem of water up the drive shaft tube is by no means rare.
Last year at Ibsley we started up an SD that had no bottom bearing and water flew out of the drive shaft tube for quite a distance - quite impressive. Many of these bottom bearings have problems, the pinion shaft corrodes and that's that. Many have simply vanished, and the water pumping problem masked with a jubilee clip over the hole.
That's why the hole is there, of course, so that excess amounts don't get all the way up the tube and onto the crankshaft bearing.
I'm not convinced that this phenomenon is anything to do with the coughing, however.
But you could try grease around that bottom bearing, with 140 grade oil in the gearbox itself.
Last year at Ibsley we started up an SD that had no bottom bearing and water flew out of the drive shaft tube for quite a distance - quite impressive. Many of these bottom bearings have problems, the pinion shaft corrodes and that's that. Many have simply vanished, and the water pumping problem masked with a jubilee clip over the hole.
That's why the hole is there, of course, so that excess amounts don't get all the way up the tube and onto the crankshaft bearing.
I'm not convinced that this phenomenon is anything to do with the coughing, however.
But you could try grease around that bottom bearing, with 140 grade oil in the gearbox itself.