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Author Topic: Coolant leak  (Read 1656 times)
BC Canuck
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Posts: 1


« on: August 19, 2022, 05:53:55 PM »

Hi Valk riders

I have a 2001 Interstate with a deteriorating intermittent coolant leak

After reading other posts on this issue and monitoring the leak for the past week I have concluded it is at the pump and not coming from any of the hoses or clamps. I can see coolant coming out from the casing where the pump is attached

Replacing the pump looks fairly straight forward, simply draining the oil and water and re and re the pump.

I would welcome any “be sure to … make sure you don’t …” suggestions.

Also does any one know the specific torque values of the pump mounting bolts if any?

Thanks

   C J
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hubcapsc
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Posts: 16769


upstate

South Carolina


« Reply #1 on: August 19, 2022, 06:43:08 PM »


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98valk
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Posts: 13443


South Jersey


« Reply #2 on: August 19, 2022, 07:09:22 PM »

hose connection to thermostat housing
and thermostat gasket are known to leak
and drip right to pump area.

unless u were using silicate anti-freeze pumps don't die early.
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1998 Std/Tourer, 2007 DR200SE, 1981 CB900C  10speed
1973 Duster 340 4-speed rare A/C, 2001 F250 4x4 7.3L, 6sp

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Chrisj CMA
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Posts: 14756


Crestview (Panhandle) Florida


« Reply #3 on: August 20, 2022, 04:13:12 AM »

I agree it’s more likely that it’s the top hose to the thermostat. Easy fix just unbolt the top of the radiator and tip it forward. If it is the pump. Go for a short ride so the engine is warm before you try to break those bolts loose. Tap on them with the socket and extension first. Once broken loose then drain the oil
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F6Dave
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Posts: 2258



« Reply #4 on: August 20, 2022, 05:36:02 AM »

Like 98 said, check the coolant type. When these bikes were new most coolants used silicates as corrosion inhibitors. Those will damage Valkyrie water pump seals very quickly. Today most are silicate free but you should check the label to be sure. Asian type coolant is essentially what Honda uses. Dex cool is also silicate free.
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Jruby38
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Posts: 237

Oxford Mass.


« Reply #5 on: August 20, 2022, 01:29:50 PM »

I had a coolant leak that I thought was the water pump.  Turned out to be the C  clamp on the top of the pump.
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stude31
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Posts: 1100


Topeka,ks


« Reply #6 on: August 25, 2022, 09:07:32 PM »

If it is determined to be the water pump.  Drain the oil first!  I wasn't around until the aftermath.  A buddy was changing his pump and had just changed the oil, a week earlier.  It ended up being in my garage floor. All else fails.. follow the instructions in the shop manual. Be sure and drain the coolant, too. cooldude
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