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1Back to top Go down   Water pump shaft replacement Empty Water pump shaft replacement Sun Jul 02, 2023 8:44 am

KiwiK100

KiwiK100
Gold member
Gold member
I see Munich BMW in Perth offer a water pump shaft without the gear, so requires the old gear removed from the shaft and pressed onto the new shaft. Rebuilding the water pump is within my capabilities having learnt a few years back how not to do it the first time around, but I am wondering if changing the gear over to the new shaft is above my pay grade having not ventured into this territory before, and also thinking specialised equipment (a press) is needed which definitely counts me out, so would have to find a shop to do it. There is a significant cost saving depending on what I’d be charged in labour. Anyone gone down this road?


__________________________________________________
Current rides:
2020 R1250RS. Metallic black with all the fruit
1983 K100C. Red. Krauzer fairing.
1984 K100RS. Madison silver.
2002 K1200RS. Owned from new. Pacific Blue, Ohlins, Speiglers, Fiamms, HID. 186,000km SOLD Crying or Very sad
1991 K1. Schwartz metallic black, 18 month frame off restoration. 74,000km SOLD Crying or Very sad
1987 K100RS Style. Black, Ohlins, Race Tech springs, Braided lines. Fully restored. 53,000 miles. SOLD Crying or Very sad
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 Grandads ride
    

2Back to top Go down   Water pump shaft replacement Empty Re: Water pump shaft replacement Sun Jul 02, 2023 2:45 pm

Suzi Q

Suzi Q
Life time member
Life time member
Didn't know the gear was pressed onto the shaft  Shocked.

But, if it is then heating it up should have it dropping right off.


__________________________________________________
Sometimes I'm not really Suzi Quatro.
    

3Back to top Go down   Water pump shaft replacement Empty Re: Water pump shaft replacement Sat Jan 27, 2024 10:00 am

SunnyPerth

SunnyPerth
Silver member
Silver member
@kiwik100 - did you manage to change just the shaft ?
I’m in similar situation..

    

4Back to top Go down   Water pump shaft replacement Empty Re: Water pump shaft replacement Sat Jan 27, 2024 4:26 pm

KiwiK100

KiwiK100
Gold member
Gold member
Yep, I bought the replacement shaft from Munich in Perth and had an engineering shop remove the old shaft and press the gear onto the new one. 20.00 well spent I think. I’ve rebuilt the pump and installed it and while a small amount of coolant leaked through the weap hole, this has all but stopped now. I enquired on the forum about it and those with lots of wisdom suggested to leave it alone until I have the engine running and the seal will then bed in fully. I've not posted how it all went as I’ve not had the bike running yet due to still restoring it. However I’m only waiting on the tank and panels to come back from the painter and it’s all done. I’ll update with pics when it’s finished.


__________________________________________________
Current rides:
2020 R1250RS. Metallic black with all the fruit
1983 K100C. Red. Krauzer fairing.
1984 K100RS. Madison silver.
2002 K1200RS. Owned from new. Pacific Blue, Ohlins, Speiglers, Fiamms, HID. 186,000km SOLD Crying or Very sad
1991 K1. Schwartz metallic black, 18 month frame off restoration. 74,000km SOLD Crying or Very sad
1987 K100RS Style. Black, Ohlins, Race Tech springs, Braided lines. Fully restored. 53,000 miles. SOLD Crying or Very sad
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 Grandads ride
    

5Back to top Go down   Water pump shaft replacement Empty Re: Water pump shaft replacement Sat Jan 27, 2024 7:35 pm

SunnyPerth

SunnyPerth
Silver member
Silver member
Thx mate - will do the same then.!

    

6Back to top Go down   Water pump shaft replacement Empty Re: Water pump shaft replacement Sat Jan 27, 2024 8:13 pm

KiwiK100

KiwiK100
Gold member
Gold member
I bought the pump repair kit from Motorworks in the UK for AUD50.00 and the impeller rotor and bolt from Munich for AUD40.00 along with the shaft for AUD150.00. This was the most cost effective way, but remember if you spend more than 200 quid, or the parcel ways more than 2kg (I think that’s the weight limit) then they won’t sent it by Royal Mail which is cheap as chips. Instead it goes by UPS I think which is very expensive.
Munich don’t do a pump repair kit, so every part has to be bought separately which makes it way more expensive.


__________________________________________________
Current rides:
2020 R1250RS. Metallic black with all the fruit
1983 K100C. Red. Krauzer fairing.
1984 K100RS. Madison silver.
2002 K1200RS. Owned from new. Pacific Blue, Ohlins, Speiglers, Fiamms, HID. 186,000km SOLD Crying or Very sad
1991 K1. Schwartz metallic black, 18 month frame off restoration. 74,000km SOLD Crying or Very sad
1987 K100RS Style. Black, Ohlins, Race Tech springs, Braided lines. Fully restored. 53,000 miles. SOLD Crying or Very sad
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 Grandads ride
    

7Back to top Go down   Water pump shaft replacement Empty Re: Water pump shaft replacement Sun Jan 28, 2024 3:52 am

SunnyPerth

SunnyPerth
Silver member
Silver member
I’ve got the overhaul/repair kit - didn’t think I needed the shaft, but clearly I do . Sometimes we think wishfully 😝

    

8Back to top Go down   Water pump shaft replacement Empty Re: Water pump shaft replacement Tue Feb 20, 2024 7:54 pm

KiwiK100

KiwiK100
Gold member
Gold member
Finally got the engine running last night and I’m pleased to note that the new pump rebuild has sealed nicely and there is no drip from the weep hole.The shaft from Munich MC  in Perth fitted perfectly and a considerable saving on buying a new shaft and gear assembly.


__________________________________________________
Current rides:
2020 R1250RS. Metallic black with all the fruit
1983 K100C. Red. Krauzer fairing.
1984 K100RS. Madison silver.
2002 K1200RS. Owned from new. Pacific Blue, Ohlins, Speiglers, Fiamms, HID. 186,000km SOLD Crying or Very sad
1991 K1. Schwartz metallic black, 18 month frame off restoration. 74,000km SOLD Crying or Very sad
1987 K100RS Style. Black, Ohlins, Race Tech springs, Braided lines. Fully restored. 53,000 miles. SOLD Crying or Very sad
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 Grandads ride
    

9Back to top Go down   Water pump shaft replacement Empty Re: Water pump shaft replacement Thu Jun 27, 2024 3:04 am

jdpanero

jdpanero
active member
active member
How did you know you needed to replace the shaft? Just opened up the water pump housing and the shaft was worn? I have some coolant drip out of the weep hole and looks like I need to rebuild to pump.


__________________________________________________
1988 K100LT Cafe Racer VIN 0180895
    

10Back to top Go down   Water pump shaft replacement Empty Re: Water pump shaft replacement Thu Jun 27, 2024 10:12 am

SunnyPerth

SunnyPerth
Silver member
Silver member
If the shaft is worn where the seal sits, you likely need to replace it; else things won’t seal well (for long)

    

11Back to top Go down   Water pump shaft replacement Empty Re: Water pump shaft replacement Thu Jun 27, 2024 8:39 pm

TacKler

TacKler
Life time member
Life time member
You should be looking for pitting corrosion around the shaft.  A little bit will be okay and always worth cleaning it up whilst in there.  

The seal will be old and simply needs replacing.  

I keep a couple of small drills bits to clean out any gunk in the weep hole.  Turn them by hand, obviously.


__________________________________________________
Red 1991 K75S
    

12Back to top Go down   Water pump shaft replacement Empty Re: Water pump shaft replacement Fri Jun 28, 2024 12:00 am

KiwiK100

KiwiK100
Gold member
Gold member
Sorry a bit slow getting to this - away riding. Answers cover everything anyway. Shaft is generally pitted and full of muck, and cleaning it will make it leak more if you install a new seal kit onto it. Don’t ask me how I know this…


__________________________________________________
Current rides:
2020 R1250RS. Metallic black with all the fruit
1983 K100C. Red. Krauzer fairing.
1984 K100RS. Madison silver.
2002 K1200RS. Owned from new. Pacific Blue, Ohlins, Speiglers, Fiamms, HID. 186,000km SOLD Crying or Very sad
1991 K1. Schwartz metallic black, 18 month frame off restoration. 74,000km SOLD Crying or Very sad
1987 K100RS Style. Black, Ohlins, Race Tech springs, Braided lines. Fully restored. 53,000 miles. SOLD Crying or Very sad
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 Grandads ride
    

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