BMW K bikes (Bricks)

You are not connected. Please login or register

View previous topic View next topic Go down  Message [Page 1 of 1]


1Back to top Go down    water pump leaks with new seal on Sat Sep 02, 2017 9:22 am

KiwiK100

avatar
Gold member
Gold member
Hi all, So I have just replaced the seal in the oil/water pump and after leaving it a week, filled it with fluids and hit the starter. Feck Sad A steady rapid drip at the bottom of the pump from the weep hole. I have done this task on another of my K's and no problem however in this case there was considerable pitting on the driven gear shaft which I cleaned up with 1000 wet and dry however I suspect this is where the leak is now generating from. Would the wise ones agree or is there something I missed. The install of the new seal went perfectly and I feel this was done well so the problem is elsewhere but who knows.
Thanks for your help


__________________________________________________
Current rides:
2002 K1200RS. Owned from new. Pacific Blue, Ohlins, Speiglers, Fiamms, HID. 167,000km
1991 K1. Schwartz metallic black, 18 month frame off restoration. 74,000km
1987 K100RS Style. Black, Ohlins, Race Tech springs, Braided lines. Fully restored. 53,000 miles.
The family history:
1951 AJS 500 single - my Dads ride
1953 Triumph Terrier - my Mum's ride
1916 Triumph Type H, Battle of the Somme, France WW1 - my Grand dads ride
    

2Back to top Go down    Re: water pump leaks with new seal on Sat Sep 02, 2017 9:28 am

RicK G

avatar
VIP
VIP
That usually means the ceramic seal has been cracked on installation DAMHIK


__________________________________________________
"Every normal man must be tempted, at times, to spit upon his hands, hoist the black flag, and begin slitting throats." from Mencken's 1919 Prejudices

Bikes 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 for now
    

3Back to top Go down    Re: water pump leaks with new seal on Sat Sep 02, 2017 9:50 am

KiwiK100

avatar
Gold member
Gold member
Hey Rick, thanks for the prompt reply. Well that would be a right PITA if that's the case although considerably cheaper than a new driven gear. Will a badly worn shaft leak? To be honest the new seal went in really nicely and the only way to see if it is cracked is to destroy it removing it.
The task of replacing the seal was undertaken as there was a slight leak of water from the weep hole in the first place


__________________________________________________
Current rides:
2002 K1200RS. Owned from new. Pacific Blue, Ohlins, Speiglers, Fiamms, HID. 167,000km
1991 K1. Schwartz metallic black, 18 month frame off restoration. 74,000km
1987 K100RS Style. Black, Ohlins, Race Tech springs, Braided lines. Fully restored. 53,000 miles.
The family history:
1951 AJS 500 single - my Dads ride
1953 Triumph Terrier - my Mum's ride
1916 Triumph Type H, Battle of the Somme, France WW1 - my Grand dads ride
    

4Back to top Go down    Re: water pump leaks with new seal on Sat Sep 02, 2017 11:23 am

KiwiK100

avatar
Gold member
Gold member
Hey Rick, here's un update. I pulled and dismantled the pump and close inspection has shown that the ceramic seal had not been driven all the way so had not bedded fully. Don't know how I missed it, and hopefully no damage. I will reinstall and allow 3bond to cure overnight before replacing fluids and another test.


__________________________________________________
Current rides:
2002 K1200RS. Owned from new. Pacific Blue, Ohlins, Speiglers, Fiamms, HID. 167,000km
1991 K1. Schwartz metallic black, 18 month frame off restoration. 74,000km
1987 K100RS Style. Black, Ohlins, Race Tech springs, Braided lines. Fully restored. 53,000 miles.
The family history:
1951 AJS 500 single - my Dads ride
1953 Triumph Terrier - my Mum's ride
1916 Triumph Type H, Battle of the Somme, France WW1 - my Grand dads ride
    

5Back to top Go down    Re: water pump leaks with new seal on Sat Sep 02, 2017 1:08 pm

RicK G

avatar
VIP
VIP
If the seal wasn't in all the way then when you tighten the bolt for the impeller it can crack that seal. It's not uncommon to crack a seal I've done it quite a few times over the years. The tradesman I had in my first year apprenticeship said "would you hit grandma's fine china with that F#@*^@ hammer then don't hit that seal with it".
I haven't come across a shaft that leaks between the seal and shaft but not saying it cant do it and if you can feel a groove with your fingernail then the seal will probably leak but that only applies to the oil side of the shaft.


__________________________________________________
"Every normal man must be tempted, at times, to spit upon his hands, hoist the black flag, and begin slitting throats." from Mencken's 1919 Prejudices

Bikes 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 for now
    

6Back to top Go down    Re: water pump leaks with new seal on Sat Sep 02, 2017 1:17 pm

KiwiK100

avatar
Gold member
Gold member
Thanks Rick for the advice. It's all back together now so will run it in the morning and see what happens...
I realise now what I did. I used the washer and impeller bolt method to draw the shaft through the seal but you cannot draw it all the way without using larger inside diameter washers to allow the impeller spacer to pull up with the shaft. I merely turned the pump over and gave the oil side of the shaft a gentle tap to set the gear flush with the casing. Of course in doing that I moved the seal out the same amount and didn't check it. Duh!


__________________________________________________
Current rides:
2002 K1200RS. Owned from new. Pacific Blue, Ohlins, Speiglers, Fiamms, HID. 167,000km
1991 K1. Schwartz metallic black, 18 month frame off restoration. 74,000km
1987 K100RS Style. Black, Ohlins, Race Tech springs, Braided lines. Fully restored. 53,000 miles.
The family history:
1951 AJS 500 single - my Dads ride
1953 Triumph Terrier - my Mum's ride
1916 Triumph Type H, Battle of the Somme, France WW1 - my Grand dads ride
    

7Back to top Go down    Re: water pump leaks with new seal on Sat Sep 02, 2017 4:12 pm

charlie99

avatar
VIP
VIP
@KiwiK100 wrote:Hey Rick, here's un update. I pulled and dismantled the pump and close inspection has shown that the ceramic seal had not been driven all the way so had not bedded fully. Don't know how I missed it, and hopefully no damage. I will reinstall and allow 3bond to cure overnight before replacing fluids and another test.

good move

good luck !


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
    

8Back to top Go down    Re: water pump leaks with new seal on Sun Sep 03, 2017 3:51 pm

KiwiK100

avatar
Gold member
Gold member
Out for a 100km ride this arvo and initially though I still had a wee leak until I realised there was coolant trapped in no mans land within the seal cavity. Once that was out she dried up and is now tight and dry! Thanks again Rick for your suggestions


__________________________________________________
Current rides:
2002 K1200RS. Owned from new. Pacific Blue, Ohlins, Speiglers, Fiamms, HID. 167,000km
1991 K1. Schwartz metallic black, 18 month frame off restoration. 74,000km
1987 K100RS Style. Black, Ohlins, Race Tech springs, Braided lines. Fully restored. 53,000 miles.
The family history:
1951 AJS 500 single - my Dads ride
1953 Triumph Terrier - my Mum's ride
1916 Triumph Type H, Battle of the Somme, France WW1 - my Grand dads ride
    

9Back to top Go down    Re: water pump leaks with new seal on Sun Sep 03, 2017 4:17 pm

charlie99

avatar
VIP
VIP


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
    

View previous topic View next topic Back to top  Message [Page 1 of 1]

Permissions in this forum:
You cannot reply to topics in this forum