New Holland Combine - 24v start

Steevo

Member
Location
Gloucestershire
A big battery will take several days to get back to full charge on a normal charger. even a heavy duty charger chucking out 20 amps can take a couple for a combine battery. As the battery level increases charge rate will drop.
keep an eye on the water level too!

Not so easy on a sealed battery surely?
 
If a battery is left discharged for any length of time it is hard to get it back to full capacity
just jump starting a flat battery and leaving the machine to run for a while does not do the battery any favours
the best hope for a discharged battery is to put it on a mains charger and fully charge it leaving it a day or so on charge ones it is gassing this can reduce the damage a full discharge does
the battery on a car that is started every day and used every day lasts longer than one started less regularly
Sulfur start crystallise the lead plates and insulate a bit. It can be reverse by several charge and discharge depending of level of damage.
 

Lincsman

Member
Arable Farmer
Location
Lincolnshire
These combines have 2 batteries, and the engine starts on 24v, and has 2 jump terminals reading 12v, question... does a charger on the jump posts charge both batteries evenly? or if jump lead starting with 12v, how does it get the other 12v to start?
 

Steevo

Member
Location
Gloucestershire
see my post #28

As previously stated check the isolator, after charging batteries last year i was on the point of thinking they were due for change, but after having a TX66 where the isolator failed, I dismantled this one (they come apart), just a slight but of oxidising on it, cleaned it but wasnt confident it was the issue.
Anyway 1 year later its still fine with original batteries.

PS it did allow cab lights to come on and ignition lights, it just wouldnt allow enough power to start it.

Thank you.

I took your post to state that it lacked the power to start the engine (through the isolator) rather than the isolator was causing the batteries to drain.

My issue appears to be more battery drain (and/or dodgy batteries to start!) than power not getting through to the starter.
 

Steevo

Member
Location
Gloucestershire
The battery reading 8 volts is shot as 2 cells have gone. This has hopefuully just dragged the other down, but I rather suspect you will need to replace both

I expect so also. The dripping (good) battery when charging doesn't bode well at all.

Dealer is right, they must have a permanent live so they do not lose memory. They will have a small rechargeable internal battery As well but that has quite a short life

You are correct! I checked yesterday - only one battery goes to the isolator, the other disappears off somewhere else.
 
My cr has 2 batteries with 3 charging terminals the decal on the battery tray explains how to charge them up

I believe on a 24 volt system that the alternator charges one up first then once that is full it charges the second so if you do a number of starts but only run it for a short time one battery gets low and it does not have enough to charge to start it especially if it has got cold ( under 10 c )
 

Steevo

Member
Location
Gloucestershire
My cr has 2 batteries with 3 charging terminals the decal on the battery tray explains how to charge them up

I believe on a 24 volt system that the alternator charges one up first then once that is full it charges the second so if you do a number of starts but only run it for a short time one battery gets low and it does not have enough to charge to start it especially if it has got cold ( under 10 c )

Ah! That's interesting! Sounds quite complex - I had never thought that the alternator would be 12v.

I'd be interested to know what the decal says.
 
&&
Ah! That's interesting! Sounds quite complex - I had never thought that the alternator would be 12v.

I'd be interested to know what the decal says.
the only part 24volt is the starter and the adblue system the rest is 12 volt
a b c terminal
the instruction manual will also have the charging instructions
you could disconnect the battery to charge each
on the previous case combine the instruction were not clear used to take the Earth off
the isolater did not stop it discharging
the service manger from case dealer insisted that the isolater had been left on when it discharged
eventually the fitter found that a fuse on the charging circuit should have been higher rated
now do not have any case kit poor back up
 

Steevo

Member
Location
Gloucestershire
the only part 24volt is the starter and the adblue system the rest is 12 volt
a b c terminal
the instruction manual will also have the charging instructions
you could disconnect the battery to charge each
on the previous case combine the instruction were not clear used to take the Earth off
the isolater did not stop it discharging
the service manger from case dealer insisted that the isolater had been left on when it discharged
eventually the fitter found that a fuse on the charging circuit should have been higher rated
now do not have any case kit poor back up

Sorry, I'm a bit confused by that. :scratchhead:

I get that the starter is the only 24v part of the system.

I'm afraid I don't currently have a full manual to check the charging information. :banghead:

So far I've just been taking the negative terminals off to separate the batteries.
 

SFI - What % were you taking out of production?

  • 0 %

    Votes: 77 43.5%
  • Up to 25%

    Votes: 62 35.0%
  • 25-50%

    Votes: 28 15.8%
  • 50-75%

    Votes: 3 1.7%
  • 75-100%

    Votes: 3 1.7%
  • 100% I’ve had enough of farming!

    Votes: 4 2.3%

Red Tractor drops launch of green farming scheme amid anger from farmers

  • 1,286
  • 1
As reported in Independent


quote: “Red Tractor has confirmed it is dropping plans to launch its green farming assurance standard in April“

read the TFF thread here: https://thefarmingforum.co.uk/index.php?threads/gfc-was-to-go-ahead-now-not-going-ahead.405234/
Top