Deleted
Posts: 0
Registered: Apr 23, 2024 22:19:48 GMT -7
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Post by Deleted on Jul 2, 2020 21:57:46 GMT -7
Hey gang, took the bike for a 'maintenance' spin the other day, and upon coming back home, noticed there was a leak right under the water pump, below where the shaft is (in the middle of it). It leaked all the way down to under the oil pan. It was all dry when I saw it. Bike was still fully hot, so the cooling system under full pressure, and it wasn't leaking anymore. Cleaned it perfectly, just in case I missed it before, but really doubt it. And if it happens again, I'd know for sure it wasn't there before this time.
Just curious if this has happened to anybody else. The typical coolant leak is at the O-ring below the headers. I wasn't aware of this one at the water pump, coming from the shaft, not the weep hole. Therefore, not the typical pump failure. I'm hoping it was due to lack of use, since bike sat for about 3 months without use (while on chemos). Will use it again soon, but just wondering what you guys think it could be. Thank you. JC
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mrcdharwood
Full Member
Posts: 167
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Registered: Nov 4, 2017 1:39:49 GMT -7
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Post by mrcdharwood on Jul 3, 2020 6:13:42 GMT -7
There's two seals for the inlet and outlet pipes. Also check the drain and bleed bolts for tightness.  |
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Deleted
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Registered: Apr 23, 2024 22:19:48 GMT -7
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Post by Deleted on Jul 3, 2020 14:25:17 GMT -7
Couldn't modify your picture, for some reason, to insert an arrow. But my bike leaked from the 'channel' you can see behind the next bolt (pointing to us) to the right of your bottom arrow (like an inch to the right). Am I making sense? Hope so. Apparently, it's slightly to the right of where the water pump shaft should be, but it leaked somewhere from up and behind there. My car is right next to the bike, so couldn't stick a small mirror to see what's up there (up and behind that bolt). I've never seen a leak mentioned from that location, hence naming it 'weird leak'. Thank you.
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Post by rracerfz10 on Jul 7, 2020 20:12:45 GMT -7
Seals and o rings can dry out on one side if the bike sits for a while but three months shouldn’t be long enough to cause that. Could it have come from where that pipe goes into the housing?
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Deleted
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Registered: Apr 23, 2024 22:19:48 GMT -7
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Post by Deleted on Jul 7, 2020 23:02:10 GMT -7
Hey, thank you for your input. Two things. First, it didn't happen when I used it again soon after... but the better test will be after it sits for another period of time. At any rate, not sure what happened. Maybe coolant dried out on a seal, and leaked a little until all the hardened coolant slipped out? Because remember when I found it, the engine was still running, and it wasn't leaking anymore; the whitish coolant residue was dry already. But the question remains WHERE did it leak from. I don't think it was where the pipes go into the housing, because they're to the right of that 'channel'. No idea what's behind that 'channel'. Finally, even if the leak continues, it should be something very simple to fix, no? It has to be a seal on the water pump, since that 'channel' is behind it. Seems to be held together by 3 bolts. Need to look for the torque on those bolts, and check them out, just in case they're not tightened properly... but honestly doubt that's the issue. Thanks again for chiming in  . Unfortunately, looks like I'm the first to have a leak in that location, so no precedent. Let's see if somebody else chimes in. Take care. |
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Moto10
Junior Member
Posts: 62 
Likes: 13
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Post by Moto10 on Jul 8, 2020 5:32:12 GMT -7
Small world! I actually noticed on my last ride I had small drops of coolant on the exhaust. I traced it back to the water pump seal as you are indicating here. I cleaned it up for now. Once the engine was cold, I just slightly increased the the torque on the mounting bolts. I have not ridden the bike since doing that, but did perform a throttle sync after spark plug replacement and did not notice any new wet areas around the water pump. I have all seals to perform the service if it does start leaking again. But for now, I’ll monitor it.
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Post by rracerfz10 on Jul 8, 2020 13:40:03 GMT -7
What year and mileage do you guys have on your bikes that are leaking?
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Moto10
Junior Member
Posts: 62
Likes: 13
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Post by Moto10 on Jul 8, 2020 16:50:16 GMT -7
What year and mileage do you guys have on your bikes that are leaking? Mine is a 2017 with just over 8k miles. |
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Deleted
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Registered: Apr 23, 2024 22:19:48 GMT -7
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Post by Deleted on Jul 8, 2020 18:12:41 GMT -7
Mine also 2017 but with only 2,977 miles. Hey guys, does anybody have the correct torque for the water pump bolts? I don't want to over-torque them; just check that they're not loose. Thank you.
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Moto10
Junior Member
Posts: 62
Likes: 13
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Post by Moto10 on Jul 9, 2020 6:12:42 GMT -7
Mine also 2017 but with only 2,977 miles. Hey guys, does anybody have the correct torque for the water pump bolts? I don't want to over-torque them; just check that they're not loose. Thank you. All water pump mounting bolts are 7.2ft lbs per the tech manual. I just loosened mine (individually)to break the torque, then re-torqued to 7.5ft lbs. I had a similar issue few thousand miles go with a very slight oil residue very near the water pump. I did the same thing for those few surrounding bolts and have not seen any residue again. If I find the water pump to start leaking again, I will update this post. |
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Deleted
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Registered: Apr 23, 2024 22:19:48 GMT -7
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Post by Deleted on Jul 10, 2020 12:16:44 GMT -7
Awesome; thank you for the info. Will check them when I'm back home next Friday. Will have to use my 1/4" inch-lb torque wrench, so 90 in/lbs. Will check torque before loosening them first, to know if they were loose or not. If they move, then no need to loosen them anymore. B Hey, which other bolts did you torque to prevent oil from seeping thru? The ones for the oil pan? And which torque value did you use, whichever bolts they were? I might as well check those, now that I'll be doing that  . Thank you again. |
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Moto10
Junior Member
Posts: 62
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Post by Moto10 on Jul 10, 2020 16:37:22 GMT -7
The bolts to stop the oil seeping are not shown in previous picture provided in this post. It was not the oil pan, luckily (knock on wood) I have not had any issues with the oil pan. The few bolts re-torqued are part of the crankcase just behind the bottom left bolt on the CP4 cover and just above the clutch cable bracket shown in the picture. Not the clutch cover housing. I wish I knew how to put pictures on here lol, but I always post on my phone.
As for the torque value, I honestly can’t remember what it was as the crankcase has many different torque values. I would have to go back and look over the tech manual again.
Hope that makes sense!
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. Unfortunately, looks like I'm the first to have a leak in that location, so no precedent. Let's see if somebody else chimes in. Take care.
. Thank you again.