226b 4 in 1 bucket does not open or close

[Roby G]

Hi all I'm trying to find the issue with my 226b 2004 I think 4 in 1 bucket it won't open or close it had oil leaking from both joy sticks repaired that problem clean all the oil from the electric connectors had it working for a while but it would lock so turned it off disconnected the battery seamed to reset something started working again now has stopped working had the cab up with it running tried the open close nothing didn't hear anything I thought it might be a solenoid but I don't know any suggestions would be great
TIA
CHEERS Rob

 

[Nige]

A serial number would be a good start. Are you using the thumbwheel roller switch on the RH joystick to open/close the bucket.?

 

[Roby G]

CAT0226BCMJH04952

 

[Roby G]

CAT0226BCMJH04952

Yes replaced the whole joystick the thumb wheel had broken

 

[Nige]

Yes replaced the whole joystick the thumb wheel had broken

Sorry to hear that, and of course thew roller switch is not available separately. Did you try opening up the thumbwheel switch to see what the problem was.? The magnet has a habit of coming apart. You might like to take a look at this THREAD for more information.

 

[Roby G]

Thanks Nige when I first replaced the joy stick the switch worked properly I'm afraid if I try to pull it apart again it will break into pieces like the old one damb new 1 was nearly $300. Just because is says CA

 

[Roby G]

But I will look into it I have a multi meter a college (diesel mechanic) told me to test for voltage in the plugs

 

[Nige]

But I will look into it I have a multi meter a college (diesel mechanic) told me to test for voltage in the plugs

You don’t have to disassemble anything apart except to unplug the wiring harness connector right below the joystick at one point in the test. You will also need a set of spoons for the multimeter so that you can measure voltage in a non-invasive way when the connector is plugged back in. You can test the output of the thumbwheel on your old joystick against the one on the replacement simply by plugging/unplugging the 12-pin connector CONN 33. See below........

With the ley OFF locate the 12-pin wiring harness connector (CONN 33) directly underneath the joystick and unplug it.

1. Turn the key ON and measure the voltage between Pins 1 & 2 (wires P994 Blue & P997 Brown) on the machine side of the connector. It should be 8.0 ± 0.2 volts.
2. Turn off the key and reconnect CONN 33. Turn the key on and measure the voltage again between Pins 1 & 2 by back-probing into the connector. Confirm that it is the same as measured in Step 1.
3. With the key ON and the thumbwheel in the centre measure the voltage between Pins 3 & 2 (wires P996 Green & P997 Brown) by back probing at CONN 33.
4. Repeat Step 3 with the thumbwheel rolled all the way forward.
5. Repeat Step 3 with the thumbwheel rolled all the way back.

Post the results from Steps 1-5 back here.

 

[Roby G]

Thanks SO much Nige you are a legend i was hoping for someone's help I'm at work today so I'll give it a go hopefully tomorrow if the missus hasn't made other arrangements
Will it show voltage when the park break is on or do I need to have the hydraulics working

 

[Nige]

Will it show voltage when the park break is on or do I need to have the hydraulics working

All you need is to do the measurements is to have the key ON at the various points where it is stated in the procedure above. If it's not ON then you're not going to measure any voltage.......

 

[Roby G]

Thanks SO much Nige you are a legend i was hoping for someone's help I'm at work today so I'll give it a go hopefully tomorrow if the missus hasn't made other arrangements
Will it show voltage when the park break is on or do I need to have the hydraulics working

 

[Roby G]

Thanks SO much Nige you are a legend i was hoping for someone's help I'm at work today so I'll give it a go hopefully tomorrow if the missus hasn't made other arrangements
Will it show voltage when the park break is on or do I need to have the hydraulics wor

All you need is to do the measurements is to have the key ON at the various points where it is stated in the procedure above. If it's not ON then you're not going to measure any voltage.......

Ok thanks again for your help I'll post a reply after I try this out.
CHEERS Nige

 

[Roby G]

Hi again
Ok tested the voltage on the plug 8.06 volts in the old joystick I took a photo of the wiring

 

[Roby G]

As you can see the green wire is connected to the button so plugged it in did a reading on the yellow (looking at the diagram in the post) & brown got some different readings
Plugged in the new one & no readings from yellow so I tried the green got readings???

 

[Roby G]

Ok No it does not have 8volts on the plug when plugged in back probes is that required for the operation of the controls

 

[Nige]

Can you post a photo of the big connector on the machine harness please.?

 

[Roby G]

 

[Nige]

If one half of the connector in your photo feeds all the wires going up into the joystick that's where you are supposed to be testing voltage.......

Please go back and read post #8 careully.