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.

Secondary spring breaking

Mohabba

New member
Lifetime Membership
I just came home from a 4 day sled trip on my 2010 Nytro MTX MCX 240. During the first day my secondary spring broke. I noticed it when the sled appeared to start in higher gear and the belt whined until i got up in speed. I could ride the rest of the day and stopped downhill to get it moving easier.

I was riding with the P.O and he had changed the spring a few short trips before, because it snapped, with a new similar pink spring.

The spring broke on the inner part about 2 inches from the tap along with the wire. In the evening we heated the broken edge and bend a new tap and i installed the spring. I rode it the next 3 days of the trip with hard pulls on lakes and hills with no further problems.

Why does the secondary spring break?
I have the MCX 240 kit with whatever clutching supplied with the kit.
The spring is black with pink paint.

Does the spring break because of binding?
Should i use a different spring?
 
i did take a picture how the spring was installed in the holes.

Im not sure what this means for hole locations.
"Wind it to 10 or 1 and 0"

When winding the spring, what do i want to achieve?
 
Just put the green Cat spring or the purple EPI. Change em once a year. You shouldn't have a problem with them. Not sure what the pink spring forces are but maybe just to soft. You sure it didn't come out of the whole and snap around breaking it ? Try a Cat green !
 
Ill get the green one from the local Cat dealer.

The spring was still in the holes and the broken part rubbed a little spot on the side of the clutch.

What holes do i put the green spring in and how much do i wind it?
 
One end in 1 position and the other in the 0 position. Looking down and holding the bottom sheave turn the helix clockwise until you get to the next stud.

These are Apex but more or less the same

Installation steps:

Hold the spring seat 1 and turn the fixed
sheave 2 counterclockwise to the specified
angle a .

The holes in the spring seat should align with
the bolts on the sliding sheave.
a = (sheave hole number + spring seat hole
number) 10

Push down on the spring seat until the bolts
come through the holes.

While pushing down on the spring seat,
install the nuts and tighten them to the specified
torque.

20qzxxe.jpg
 
Premium Features



Back
Top