My norditrack gx 4.5 keeps losing resistance. I pedal and then it just spins and then engages again?

Actually there is nothing that you can fell like 0

check the slave cylinder adjustment as normally there is no adjustment on the piston rod
There should be about 1/4 " free play between rod and throw out arm
the pivot bolt for the throw out arm should never be adjusted
what you have indicates air in the system or a faulty clutch master cylinder
you can get the clutch slipping indication if the compensating port in the master cylinder is blocked which holds the fluid in the system and keeps the clutch from fulling engaging
no resistance is air in the system and that can be from a faulty master cylinder

It's the clutch bearing in the brake assembly. They can be replaced but you would need a bearing press. Might be better off buying a new assy.

That's normal operation for automatic traction control.

HI Michelle,

Sorry to say this,please call authorize service agent.
regards,
nuwan

Why does one pedal drop on my Stairmaster Stepper but the other pedal operates correctly? Stairmaster Steppers, How to Troubleshoot when one Pedal Drops (Loses Resistance) while the Other Pedal Operates Correctly

• If one pedal drops while the other operates correctly on your Stairmaster stepper, this problem commonly occurs when the drive sprocket on one side or the other becomes defective
• Usually, when one drive sprocket fails, the other isn't too far behind
• The best approach to resolve this problem is to install a new hub assembly

Why does one Pedal Drop on my Stairmaster Stepper

If you're not losing any brake fluid then it sounds to me as though the master cylinder is bleeding fluid between to two chambers allowing fluid to pass from one to the other which would decrease the pressure on one of the lines leading to the proportioning valve, thus setting off the 'brake' light.

Orrrrr,

IF it does NOT have the hydroboost system the following steps MAY help diagnose if it's a booster problem.

(Copied and pasted from a youtube comment)

Test 1) 1. Start the car 2. Let it idle for 2 minutes 3. After 2 minutes turn off the car 4. Pump the brake pedal 3 times 5. The pedal should rise every time if it does then the Booster and Check valve are OK 6. If the pedal doesn't then the is an issue with the either one, run tests 1 and 2.

Test 2) 1. Start the car 2. Let it idle for 2 Minutes 3. After 2 minutes push down the brake pedal and HOLD it 4. While holding the pedal down turn off the car 5. The pedal should NOT rise for at least 30 seconds 6. If it doesn't rise then the Check Valve is good 7. If the pedal rises before 30 seconds then the Check Valve is faulty.

Test 3) 1. Shut off the Engine 2. Pump the brake pedal 4 times 3. On the 4th one keep it pushed down and start the car while holding the pedal down 4. The pedal should sink down. 5. If it sinks, the booster is Fine.

Myself, I'm leaning towards the master cylinder having an internal 'leak' or bypass problem.

Hope this helps.

Printwheel in wrong. release the printwheel, make sure the pin is aligned with the slot on the hub and snap it back in. The printwheel should spin, then home out to the left margin, then it should be ok. If not try it again.Check to make sure no pedals on the printwheel are bent.
Hopes this helps!

Why does one pedal drop on my Stairmaster Stepper but the other pedal operates correctly? Stairmaster Steppers, How to Troubleshoot when one Pedal Drops (Loses Resistance) while the Other Pedal Operates Correctly

• If one pedal drops while the other operates correctly on your Stairmaster stepper, this problem commonly occurs when the drive sprocket on one side or the other becomes defective
• Usually, when one drive sprocket fails, the other isn't too far behind
• The best approach to resolve this problem is to install a new hub assembly

Why does one Pedal Drop on my Stairmaster Stepper

have you bled the brakes? If you have, you may need to do it again as there sounds like there's an air lock in your lines.