Install the app
How to install the app on iOS

Follow along with the video below to see how to install our site as a web app on your home screen.

Note: This feature may not be available in some browsers.

  • Don't miss out on all the fun! Register on our forums to post and have added features! Membership levels include a FREE membership tier.

Pressure testing proclimb cooling system

dunatyk

Well-known member
Lifetime Membership
I was just curious if this is ok to do to a snowmobile cooling system. Ive done it on forklifts and cars but never on a sled. The reason i ask is this weekend i lost about 32 oz of coolant (2 water bottles worth) and had my temp light come on. The only thing i can think of is i got it hot riding in the trees and blew some out the overflow and never noticed. I dont think my hose/resevoir is split like the HCR do but am replacing anyways. I hit my temp light on the way out on the trail but had the scratchers down and was getting tons of slush and water it was caked all over my heat exchangers. it was hot all day like 60 deg. Anyways i filled it up on the trail and rode the rest of the way out and never seen the temp light again. Dont think i have an o-ring problem in the head pressureing the cooling system i have been down that road before. When i got home i checked the level and fired it up seems to be circulating and the heat exchangers got warm in the garage.
Opinions????
 
If you take your exhaust out and have a look at some of the coolant hoses, one of mine was loose (The gear clamp).

It was the hose clamp directly behind a aluminum strut or brace going horizontally from front to back. From the factory it looked like it would have been hard to get tight because of the brace in the way. I put a screw driver on it, and it was finger loose. I repositioned the clamp so I could easily tighten it from another angle.

You might want to pull off your exhaust and have a little look-see at those hoses. I had a coolant leak, and I am positive this was the culprit.....

Give it a try
 
I would think you could put some pressure on it without any bad things happening. There is natural pressure on the system anyway when it heats up anyway, but not sure how much.

I would say that if you pressurized just below what the filler cap blow off pressure would be, you would just fine.......
 
I don't know what the max pressure they are designed to take, I believe they run around 16psi. If you have the pump, there is no problem testing them.
 
Found it! The lower hose feeding the heat exchanger from the engine was half way off and the clamp was less than tight! I think when the dealer replaced the motor when she was new forgot to tighten the clamp. It is odd that it took almost 900 miles to present itself
 
They pressure test them at the factory, so have at. What they did was do maybe a 16 psi test and dunk the whole thing underwater and look for bubbles. The setup they have doing the aluminum welding isn't too reliable from what I saw. When I walked by on the tour they were testing one that leaked.
 
I'm glad you found a loose hose. Last weekend we had a group at revelstoke with the most beautiful weather you ever seen and a 1100t was forcing the coolant through the seam in the POS coolant tank. Nothing better than ruining a whole weekend cuz of poor engineering. Will be fabbing an alluminum one now.
 
Every 2012 should install the Napa hose. Eventually (and that is the rub) all MAY fail.

Poor material (look at the color change in use) and stressed seam equals change for 2013.
 
Premium Features



Back
Top