TC40DA won't start

[WM75Guy]

You should not have to do that. You may have developed enough slop in the PTO lever assembly that the plate that is part of the PTO assembly is no longer making contact with the switch. That would prevent it from starting. That is part diagram 3.11.

 

[Ford850]

It looks like part #6 in the 3.11 parts diagram linked by repowell is an adjustment bolt for the PTO lever and switch. If you have had to hold the PTO lever back to start, that would mean the bolt (#6) would need to be lengthened for better contact, or the PTO switch is bad.

 

[Hieronymous]

You should not have to do that. You may have developed enough slop in the PTO lever assembly that the plate that is part of the PTO assembly is no longer making contact with the switch. That would prevent it from starting. That is part diagram 3.11.

Thanks. I agree that I shouldn't have to do that but I do. Slackness in the linkage. I still have to check the PTO safety switch as I was struggling to do so today (Thursday) because of my situation.

 

[Hieronymous]

It looks like part #6 in the 3.11 parts diagram linked by repowell is an adjustment bolt for the PTO lever and switch. If you have had to hold the PTO lever back to start, that would mean the bolt (#6) would need to be lengthened for better contact, or the PTO switch is bad.

It is and I have. But as I said to repowell it's slackness in the linkage that means I have to hold it back. Anyway I'll check the PTO safety switch tomorrow and, if it isn't that, I'm pretty well snookered.

 

[airbiscuit]

I had a 33hp New Holland that wouldn't start. I sprayed a little electronics cleaner in the Seat safety switch plug ins, and problem solved.

 

[Hieronymous]

Well I've made a degree of progress in that I've got it turning the engine over albeit very weakly. Battery is now on charge but I'm wondering if it's had it's day. Shows a reasonable amount of 'juice' on the multimeter though.

Took the starter motor off and checked that out. All was well (unless it had been jammed and this procedure freed it). Also gave the earth (ground) a clean and then put it all back to find that the engine would now turn over if only weakly.

I think I'd rather convinced myself that it was a safety switch issue. I'll have to see what it's like with a fully charged battery.

 

[Ford850]

What was the voltage on the battery? A low battery or corroded cables would both be reasons for the starter solenoid to not react, and give the original symptoms you described. They are easy to remedy though.

 

[Hieronymous]

What was the voltage on the battery? A low battery or corroded cables would both be reasons for the starter solenoid to not react, and give the original symptoms you described. They are easy to remedy though.

As I recall it was 12.08.

 

[Ford850]

As I recall it was 12.08.

I pulled this from another site, but it's a good reference:

A fully charged battery should read over 12.6 volts. If the battery reads 12.45 volts or less, it is low (less than 75 percent charged) and needs to be recharged.
Battery Voltage and State of Charge:

12.66v . . . . . . . . . . 100%
12.45v . . . . . . . . . . 75%
12.24v . . . . . . . . . . 50%
12.06v . . . . . . . . . . 25%
11.89v . . . . . . . . . . 0%
(NOTE: these readings are at 80 degrees F. Battery voltage readings will drop with temperature roughly 0.01 volts for every 10 degrees F.)
(At 30 degrees F. a fully charged battery will measure about 12.588 volts, and at zero degrees F it will measure about 12.516 volts.)

 

[Hieronymous]

I pulled this from another site, but it's a good reference:

A fully charged battery should read over 12.6 volts. If the battery reads 12.45 volts or less, it is low (less than 75 percent charged) and needs to be recharged.
Battery Voltage and State of Charge:

12.66v . . . . . . . . . . 100%
12.45v . . . . . . . . . . 75%
12.24v . . . . . . . . . . 50%
12.06v . . . . . . . . . . 25%
11.89v . . . . . . . . . . 0%
(NOTE: these readings are at 80 degrees F. Battery voltage readings will drop with temperature roughly 0.01 volts for every 10 degrees F.)
(At 30 degrees F. a fully charged battery will measure about 12.588 volts, and at zero degrees F it will measure about 12.516 volts.)

Thank you. I shall see what happens with a fully charged battery.