1440 PTO stops working

[tltate]

i have a cub 1440 with electric PTO problems. The factory PTO bearings came apart and burned up the electric PTO which had to be replaced with a "cub cadet" replacment part. When I engage the PTO, the deck will start; but when I release the switch to the "operational" position the deck cuts out. If I hold the switch in the "start" position the deck continues to run and everything works fine. i used me voltmeter and tapped out the switch and relay which both look fine. Why would this electric PTO be cutting out?

 

[kweaver]

Because the PTO isn't staying energized. Not knowing how the switch is wired I can only "guess" that the switch is bad.

 

[kweaver]

Use your meter to see if PTO switch terminals "A - B" have contact when ON.

 

[tltate]

A & B are connnected in the "ON" position.
A, B & F are connected in "Start" position

 

[kweaver]

Remove wires from Relay pins 86 & 85
Apply Positive voltage to Relay pin 86
Apply Negative voltage to relay pin 85
Relay should pull in and hold.

 

[tltate]

relay pulls and holds, but apparently will not pass amperage. I bypassed the relay and everything works fine. A new relay should put me back in business. Thak you for all the assistance.

 

[kweaver]

Your seat switch would be the next thing to check.
Your PTO switch can be bad too since it's not a latching relay.

Check all grounds too and make sure there's no rust or paint under the ground contact spots.