Greenmech quad trac I feed roller not working

[Grassyass]

I have a green mech quad trac 160 that the feed roller stopped working,so I changed the solenoid,still nothing, swapped the plugs and will work off the out plug, I’m not getting 12v to the plug , any idea what to check next ?.

[Mark Bolam]

@Jase hutch?

[Jase hutch]

What revs are showing at max speed  ?

[Grassyass]

2260  revs , from memory 

[Jase hutch]

Ok , assuming the revs on the display are constant and don't vary by more than 5 - 10 rpm , that's sufficient. 

When you first turn the ignition on and watch the display boot up , does it show 'QC160' before finally showing '0' ?

It's worth taking the black palm switch apart and checking to see that you get continuity between the two wires when the switch is pressed  ?

Also worth removing the forward Herschmann plug (bottom one) from the feedroller control valve  , remove the screw completely and hook out the centre of the plug to check the wire connections ?

[Grassyass]

Thanks I took the herschmann plug off all together checked changed it ,checked the wires to plug they seem to have 9v to them but when you put the machine to chip speed volts drop ,I’ve checked the voltage to the black switch but not tested the switch ,

[Grassyass]

Hi Jase checked the black switch getting continuity when pressed, the display dose not show qc160 , but i don’t think it ever has , it dose it’s check the last one being guard the goes to zero ,not sure what else to check 

[Jase hutch]

Ok , can you locate the black plastic 6 pin Bulgin plug , it's in the loom between the control box on top of the infeed chute and the machine wiring loom  , located in the area behind the battery. Separate the two halves of the plug by unscrewing it and check the pins are clean and most importantly 'dry'.

I'll see if I can find the Bulgin plug test sheet showing how to carry out a continuity test at this plug.

[Jase hutch]

Bulgin plug pin locations and testing continuity ...pdf

[Grassyass]

Plug nice and dry and clean , getting cont, 4-5, but nothing on the black push switch or the bar pulled back , but reverse is working?