B2320 No start, no battery light

[MapleWorks]

Hello Everyone,

I have owned a B2320 for over 6 years (~ 450 hrs) that suddenly developed a no start issue. After blowing snow this morning, I parked in the garage and accidently forgot to shut the PTO off before shutting down. When I went to restart about an hour later it obviously wouldn't because the the PTO lever was still engaged (2500 mid and 540 rear). I disengaged the PTO lever and tried again but still no start. I can hear the click when key turned to on. Battery Voltage is good. I checked to make sure the forward/reverse pedal switch was being activated in the neutral position. I checked all the fuses. Not sure where the PTO safety switch is.

I did notice when you turn the key to the on position ONLY the oil pressure light comes on and not the battery health light. Is this a clue to what is going on? The glow plug light comes on normally.

I have used this forum for years to help me troubleshoot but this this the first time I needed to post. Thanks for your help!

 

[North Idaho Wolfman]

While key in cranking position move the PTO lever engage and disengage.

 

[MapleWorks]

While key in cranking position move the PTO lever engage and disengage.

I did try that. Nothing.


I also managed to start the tractor by jumping the starter, so no issue with the starter motor itself. This also confirms the safety switches controlling the fuel shut off solenoid are working.

. I suspect the voltage regulator is bad after looking at the wiring diagram. a
I found others who had a similar problem and it ending up being the voltage regulator. I am also thinking the battery charge light being out is a clue to this. Thoughts?

Where is th VR located? I assume under the dash? Anyone have a service manual gor the B2320HST? I can’t figure out how to get the plastic trim off to access.

Thank you!

 

[BAP]

Have you put a voltage tester on it to see
A) what the battery voltage is?
B) what the voltage is when the tractor is running?
Just throwing new parts on because Joe Schmo on the internet did and solved his problems is a pretty expensive and stupid way to fix it.
Did you try moving the foot pedal for forward and reverse to see if it wasn’t centered on the safety switch? Have you taken both ends of the 2 battery terminals off and cleaned them well?

 

[GreensvilleJay]

'we' really need to see the wiring diagram
If wired same as my BX23S, oil light comes on as it's a separate 'feed' or ''circuit' than the rest of the 'dash' The 'bat light' does come from alternator.
query ? Does the rest of the dash function ? lights,gauges swing when key on, etc. ?

 

[MapleWorks]

Have you put a voltage tester on it to see
A) what the battery voltage is?
B) what the voltage is when the tractor is running?
Just throwing new parts on because Joe Schmo on the internet did and solved his problems is a pretty expensive and stupid way to fix it.
Did you try moving the foot pedal for forward and reverse to see if it wasn’t centered on the safety switch? Have you taken both ends of the 2 battery terminals off and cleaned them well?

Thank you all for the replies.

A) Batter voltage is 12.6V off. Cranks very strong and starts and runs no problem if you jump the starter solenoid with the key in the on position. All dash lights and accessories work with the exception of the battery charge lamp . The manual states it should come on when key on. In the wiring diagram this light is fed directly from the voltage regulator so I was just thinking it was a suspect.

B) I will check battery voltage when tractor running to confirm but I suspect it is charging as it is now fully charged and I used it for 2 hours prior to failure.

Yes, I confirmed the treadle safety switch is operational. I can hear the fuel solenoid clicking when key turned on.

I"m looking to purchase a workshop manual. B2320 B2620 B2920. Anyone have advice on best place to purchase?

Wiring diagrams I found attached!

 

[North Idaho Wolfman]

I would double check fuses, a 5 amp fuse controls the OPC and a 10 amp fuse Controls the Regulator.

There are 5 safety switches 2 on the seat, 2 on the PTO, and 1 on the HST linkage.
Check that they are all working.

 

[GreensvilleJay]

2 different 'regulators' and right one doesn't say B2320 in the upper right......
so you've confused the dinosaur here.....
If you're is like the left one, unplug regular and connect +12 to the WR pin ,which foes to charge lamp. if it lights, the bulbs NOT burned out....

 

[BAP]

I would double check fuses, a 5 amp fuse controls the OPC and a 10 amp fuse Controls the Regulator.

There are 5 safety switches 2 on the seat, 2 on the PTO, and 1 on the HST linkage.
Check that they are all working.

Not sure where you are getting 5 safety switches, with 2 seat and 2 PTO from. My B2920 only has 3 total, 1 seat, 1 PTO and 1 treadle pedal.

 

[North Idaho Wolfman]

Not sure where you are getting 5 safety switches, with 2 seat and 2 PTO from. My B2920 only has 3 total, 1 seat, 1 PTO and 1 treadle pedal.

Yes sorry i lied.
5 safety switches, 3 seat, 1PTO, 1HST

 

[MapleWorks]

Update. The battery voltage when running now is only 12.5V.

The service manual states that a possible cause of the battery warning light not illuminating with key on is:
- Regulator defective
- blown fuse 10 amp
- Dynamo defective
-wiring harness disconnected


I assume that since the tractor runs perfect when hotwired it is not the Dynamo or wiring harness. I am unsure where this 10 amp fuse is located. Is it under the dash trim?

All of the fuses in the fuse block confirmed OK with a multimeter.

Things are pointing to the voltage regulator but the service manual does not detail how to remove the dash trim to access to test.


Thank you again for your help.

 

[North Idaho Wolfman]

There is only one fuse block by the starter.
Have you used a test light to confirm your getting power in and out of the fuses?
specifically the 5 amp and 10 amp fuses?

The dash is held in with snap clips

I would pull the whole cover and dash to avoid clip damage.
One screw and lift up off of clips.

 

[TJP440]

I did not read the entire post but DID chase my tail on a similar problem. The Battery voltage showed 12+ V with no load. lights ect seemed ok.
After chasing my tail for a few hours I happened to note the Battery V would drop to ~ 2V as soon as I tried to start it (heavy load). As soon as I turned the key off, the V would start climbing back up to 12+V. try to start again repeat performance. In 50 + years I had never experienced a battery failure like this.
new battery, EOP. keep us posted

 

[MapleWorks]

The dash is held in with snap clips

I would pull the whole cover and dash to avoid clip damage.
One screw and lift up off of clips.

Thank you so much! This is exactly what I was looking for. I didn't think to check the parts diagrams. Unfortunately my aftermarket Cab seems to be blocking access to the one screw! Also looks like I'll need a steering wheel puller. It's turning into a big job so I may continue to hotwire start it until the worst of winter is over so I won't get caught with my tractor in pieces and another big storm incoming. Best regards to all and I will be sure to update the thread when I get the dash apart.

 

[GreensvilleJay]

random thoughts...
1) is the fan belt tight ( say <1/2" deflection ) ?

2) can you check that the charge light bulb is NOT burned out ??