Matbro TS 270 lost all drive.

[DaveB]

The matbro TS 270 at work completely lost drive today whilst reversing. Will not go forwards or back. When we stopped the engine and tried to restart there was no power to the starter either. With the shuttle in forward or reverse and handbrake on the buzzer does not sound. Fuses are ok and swapping relays about makes no difference.
Any help much appreciated Thanks.

 

[Renaultman]

The matbro TS 270 at work completely lost drive today whilst reversing. Will not go forwards or back. When we stopped the engine and tried to restart there was no power to the starter either. With the shuttle in forward or reverse and handbrake on the buzzer does not sound. Fuses are ok and swapping relays about makes no difference.
Any help much appreciated Thanks.

@ACEngineering

 

[ACEngineering]

The matbro TS 270 at work completely lost drive today whilst reversing. Will not go forwards or back. When we stopped the engine and tried to restart there was no power to the starter either. With the shuttle in forward or reverse and handbrake on the buzzer does not sound. Fuses are ok and swapping relays about makes no difference.
Any help much appreciated Thanks.

Sounds like you lost power to the forward reverse lever. I was going to say the lever its self but that wouldn't make sense as you would still have drive in one direction if you sorted it out on the starter to get round the safety start.
So its all pointing to F/L power failure think this comes straight off a fuse in the dash, take 2 screws out and lift out the fuses/relays and have a look at the back side of the fuse connections and also look to the wiring loom going up the column for broken wires, its not uncommon for the wiring loom to get its self wrapped a round the steering column UJ!

 

[DaveB]

Thanks @ACEngineering, will take a closer look in the morning, took the fuse and relay panel out this afternoon, nothing obviously wrong, the two screws took a bit of removing, probably never been out since it was built.

 

[ACEngineering]

Thanks @ACEngineering, will take a closer look in the morning, took the fuse and relay panel out this afternoon, nothing obviously wrong, the two screws took a bit of removing, probably never been out since it was built.

small sharp chisel and hammer gets them out normally, bin them and fit bolts.

 

[DaveB]

Yes, it was a hammer and chisel job.

small sharp chisel and hammer gets them out normally, bin them and fit bolts.

 

[Tractortech]

The matbro TS 270 at work completely lost drive today whilst reversing. Will not go forwards or back. When we stopped the engine and tried to restart there was no power to the starter either. With the shuttle in forward or reverse and handbrake on the buzzer does not sound. Fuses are ok and swapping relays about makes no difference.
Any help much appreciated Thanks.

Now Then..
99% guarantee that the FNR lever has failed. Test the red wire in the plug for 12v, if you have power, replace the FNR. if no power a fuse will fix it.
I did a TR200 before Christmas, the fuse had failed due to a crushed brake light.

 

[David.]

It's usually the reverse microswitch in the shuttle lever that goes first, because the reversing light takes its feed through the microswitch from the factory. Fix is to solder in a new microswitch and put a relay on the reverse light and activate it with the reverse microswitch.

 

[DaveB]

Thank you for the replies, my first thought was the fuse because the same thing happened years ago when we first got the machine,was caused by turning on rear wiper which had a short. Its definitely not the shuttle. I will look at it again this morning. Had to happen loading an artic with a full bucket way up in the air.

 

[Tractortech]

Turn the key on, walk around the back & see if the reversing lights are on..

 

[bravheart]

Not familiar with a 270 but a couple of quick switches to check, if fitted
Seat pressure switch/wiring.
Gearstick isolator button switch/wiring.
And just a thought if it has an inching drive rocker switch, it may be pressed and "if" the cab floor is built up with crud the brake pedal cant release properly and stop the drive, works with brake lights, check if they are on permanently.

Had all these happen on a 200 anyway and worth a check.

 

[ACEngineering]

The key to the diagnosis here is loss of drive in both directions and not starting on key. This can only mean no power to f/r lever. Nothing to do with dump switches or seat pad etc etc. Fuse would be the first to rule out and if blown then yes there could be a short of reverse lights or dump circuits making it blow but op has already said fuses okay so brings it back to broken feed to lever.

Dont think the feed for lever comes from a relay although there are relays for forwards and reverse and safety start.

I think the main reason why the switchs in the matbros fail so often is because the relays dont have diodes built in to them and when switching send voltage spikes back up to the switch and burn them out?
No real point in fitting a extra reverse light relay its already got relays!

 

[HAM135]

Our old 270 had this problem,if you took off the panel into the fuses and moved the wiring loom about that used to fix it,broken or loose wire somewhere.

 

[rc mx110]

The key to the diagnosis here is loss of drive in both directions and not starting on key. This can only mean no power to f/r lever. Nothing to do with dump switches or seat pad etc etc. Fuse would be the first to rule out and if blown then yes there could be a short of reverse lights or dump circuits making it blow but op has already said fuses okay so brings it back to broken feed to lever.

Dont think the feed for lever comes from a relay although there are relays for forwards and reverse and safety start.

I think the main reason why the switchs in the matbros fail so often is because the relays dont have diodes built in to them and when switching send voltage spikes back up to the switch and burn them out?
No real point in fitting a extra reverse light relay its already got relays!

a dude fitted a couple relays I think into the shuttle wiring somewhere so the power surge wasn't'going back to the switch. Didn't really understand but he said it should make the lever last longer

 

[DaveB]

Thank you to all who replied with advice on this thread. Looking at things in a bit less of a panic the next morning I found that the f.n.r. fuse had indeed blown, unfortunately a new fuse blew again straightaway on engaging reverse. The fault turned out to be a short on the wire leading to the reversing lights in the rear light clusters.

 

[Michaelj]

Sounds like you lost power to the forward reverse lever. I was going to say the lever its self but that wouldn't make sense as you would still have drive in one direction if you sorted it out on the starter to get round the safety start.
So its all pointing to F/L power failure think this comes straight off a fuse in the dash, take 2 screws out and lift out the fuses/relays and have a look at the back side of the fuse connections and also look to the wiring loom going up the column for broken wires, its not uncommon for the wiring loom to get its self wrapped a round the steering column UJ!

Hello all does anyone know what sizzle relays should be under dash as all are missing

 

[Michaelj]

I mean what size relays

 

[ACEngineering]

a dude fitted a couple relays I think into the shuttle wiring somewhere so the power surge wasn't'going back to the switch. Didn't really understand but he said it should make the lever last longer

They already have relays as standard.
But matbro never used relays with diodes in to protect from spikes going back and burning mirco switch out in lever.
Manitou use same lever as matbro ts270 but they dont give half as much trouble because manitou used diodes in relays and alot also have tiny printed circuit board with diodes inside the transmission solenoid plugs too to protect spikes coming from the coils.

 

[Michaelj]

Can you tell me what the standard size relays are as I think there is one on the floor for 30amp 5 pin

 

[ACEngineering]

Hello all does anyone know what sizzle relays should be under dash as all are missing

Not sure off top of my head. Theres some 4 pin and some 5 pin i think. Plus a flasher relay for indicators thats 3 pin i think.
Most will be 20/30amp 5pin or 30amp 4 pin.
You could/should have 1 x 70amp 4 pin on the starter circuit?