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Discussion Starter · #1 ·
Ok my 2001 tb has developed a mystery coolant leak. After running a search I re checked all the hoses I could access. to no avail. I have since removed the water pump to check the seal. While removing the pump I found the rear hose,who's clamp was facing the engine to be quite loose. After finding that I tightened and started reassembly of the system. Which brings me to question's that bother me so.
1.Does anyone have specs for pressure testing our cooling system? I didn't notice any thing in Triumph's manual, but I've overlooked stuff before.

2. Were all the classic water pump assemblies have the clamp on backward? I have since changed it so it can be checked easily.

Thanks to all and cheers
 

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When you say "mystery coolant leak", do you mean the coolant level went down but you couldn't spot a cause?

If so, the likeliest is that it went down the overflow tube whioch runs off the expansion tank and down to the reat suspension link.

If I top up mine to the full line on the tank, it will then overflow when hot until it reaches a stable point a couple of inches below that line. I believe Slinky and others experience the same characteristic.
 

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I had one of those myster leaks on my TBS and found that the small plastic elbow that goes into the overflow tank from the radiator had a crack in it.
This would not have shown up on a pressure test.
Replaced it and no problems since. :cool:
 

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Discussion Starter · #4 ·
Thank you both for replying I believe I fixed the leak. The leak created a puddle under the water pump, causing me to fear the worse.
In the earlier post I mentioned the hose clamp on the inboard side of the water pump was loose. I could actually turn the hose easily, it seems that clamp had loosened over time. I haven't had an opportunity to go for a ride yet to get the engine warm enough to build pressure yet.
Which is why I hoped there was psi spec so I could pressurize the system without leaving the garage. But Awe shucks, I'll have to go for a ride.
I've had some fun with the cooling systems of these bikes already I'm starting to know them well.
The coolant level on my bike before the leak developed was just below the min line. If I topped her off should return there.I figured the tank marks were off.
My wife's 95 had a bad elbow going into the coolant tank and a slice from the "ham fisted" prior owner. Apparently he managed to jam the fuel tank mount through the side of coolant tank. some epoxy anr some reinforcement of fiberglass cloth and good as new.
 

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On 2007-01-09 13:03, parrycm wrote:

If I top up mine to the full line on the tank, it will then overflow when hot until it reaches a stable point a couple of inches below that line. I believe Slinky and others experience the same characteristic.
Both of mine will settle just at the min mark on the oferflow tank.
 

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On 2007-01-09 13:03, parrycm wrote:
If I top up mine to the full line on the tank, it will then overflow when hot until it reaches a stable point a couple of inches below that line. I believe Slinky and others experience the same characteristic.
Going from memory, mine settles about an inch below MIN when the engine is cold.
 

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I had a similar problem with my 2K-TBS but it was the hose clamp at the top under the fuel tank.


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