David Brown 885 gauge overheating

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dundeemike
Posts: 3
Joined: Wed Oct 03, 2018 11:39 am
Location: Angus

David Brown 885 gauge overheating

Post by dundeemike » Sun Nov 04, 2018 9:16 pm

Hi

Hopefully someone can provide some guidance on water temperature problems with DB 885. When the tractor has been operating, the gauge would jump from cold to hot and also sometimes jump about from cold to hot and vice versa, eratic changes.

To date I have added a new thermostat, sender and also a brand new radiator. Pump is also working and new belts fitted. I thought all was fine but then today again it jumped into the red when using. I have fully flushed the cooling system once new radiator fitted.

Manifold above thermostat into the radiator top hose is warm but radiator is cool to the touch

I am assuming that the last culprit may be the guage?

Any advice

Cheers

Michael

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Lofty
Posts: 208
Joined: Fri Dec 23, 2016 5:04 pm
Location: South Australia

Re: David Brown 885 gauge overheating

Post by Lofty » Sun Nov 04, 2018 9:41 pm

I would have said the gauge or wiring were the first suspects, with erratic readings like that. A big lump of engine can’t change temperature that quickly.

dundeemike
Posts: 3
Joined: Wed Oct 03, 2018 11:39 am
Location: Angus

Re: David Brown 885 gauge overheating

Post by dundeemike » Sun Nov 04, 2018 10:14 pm

Thanks

I will look at ordering new guage

Cheers

Michael

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ollek
Posts: 3532
Joined: Tue Apr 10, 2012 1:20 pm
Location: South West Finland

Re: David Brown 885 gauge overheating

Post by ollek » Mon Nov 05, 2018 7:56 am

Check the lead between the gauge and the temperature sender, before you obtain a new gauge. The gauge will show max temp if the lead gets in contact with the tractor frame.

starider
Posts: 20
Joined: Wed Aug 15, 2018 11:14 pm
Location: DEVON

Re: David Brown 885 gauge overheating

Post by starider » Tue Nov 06, 2018 8:05 pm

I agree,there is a strong possibility that the lead from the sender to the gauge is earthing out somewhere.Suggest removing the sender wire from the gauge and fitting a temporary new wire from the sender to the gauge as a test[it doesn't have to be installed through the wiring harness route until proven one way or the other]..........starider
Last edited by starider on Thu Nov 08, 2018 9:37 pm, edited 1 time in total.

dundeemike
Posts: 3
Joined: Wed Oct 03, 2018 11:39 am
Location: Angus

Re: David Brown 885 gauge overheating

Post by dundeemike » Tue Nov 06, 2018 8:55 pm

Thanks for the advice, bit of a novice so what type wire (amps) would be required?

Cheers Mike

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skyrydr2
Posts: 194
Joined: Fri Sep 23, 2016 9:27 am
Location: USA, Massachusetts

Re: David Brown 885 gauge overheating

Post by skyrydr2 » Tue Nov 06, 2018 11:38 pm

14 gauge or 16 gauge will work.

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bedwards1966
Posts: 817
Joined: Sun Mar 07, 2010 10:36 pm
Location: North Yorkshire

Re: David Brown 885 gauge overheating

Post by bedwards1966 » Tue Nov 06, 2018 11:56 pm

Almost certain to be an electrical problem.

The wire does not need to be thick as there's next to nothing going through it.

starider
Posts: 20
Joined: Wed Aug 15, 2018 11:14 pm
Location: DEVON

Re: David Brown 885 gauge overheating

Post by starider » Thu Nov 08, 2018 9:43 pm

Hi,any "old" length of vehicle wiring will do as it's an earth return.Once proven either way you can[if necessary] use similar wire to the other earthing wire,usually black covered...................starider :wink:

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