Whats the difference between John Deere 7800 and 7810

s86t

Member
Hi what's the difference between the 7700,7800 and the 7710,7810 john deeres and are they reliable past 10000 hours?
 

Leaping_Dear

Member
Location
Berks, UK
It was more evolution than revolution.

The biggest difference as mentioned before was the engine, 7000 series was 6.7 litre engine and the 7010 series was 8.1 litre. both are good engines, all be it more power from the 8.1. The latter 7010 series engines were common rail which are pretty reliable, so I wouldn't worry about that.

Front and rear axles/drive systems are pretty much the same. 7010 series introduced TLS, and they launched the autopower. Which isn't the ZF transmission but JD/Funks own and on the whole is more reliable. otherwise it has a Powerquad and there reliability is well known. Cabs are similar but the differences would be the same as the changes are between 6000 & 6010 series, such as cometic and a few more electronics in the 7010 but not too many.

Personally a 7810 50k is IMO one of the best tractors JD ever made. I wouldn't be worry about the hours. if its been properly maintained they'll go for another 10,000 hours.
 
have one that does no more than about 50hrs a year for past few years and is on 5k hours. Still runs like a new tractor. The beauty of these is they are well built and simple, ie no electrics etc
 

NZ Tech

Member
Location
California
It was more evolution than revolution.

The biggest difference as mentioned before was the engine, 7000 series was 6.7 litre engine and the 7010 series was 8.1 litre. both are good engines, all be it more power from the 8.1. The latter 7010 series engines were common rail which are pretty reliable, so I wouldn't worry about that.

Front and rear axles/drive systems are pretty much the same. 7010 series introduced TLS, and they launched the autopower. Which isn't the ZF transmission but JD/Funks own and on the whole is more reliable. otherwise it has a Powerquad and there reliability is well known. Cabs are similar but the differences would be the same as the changes are between 6000 & 6010 series, such as cometic and a few more electronics in the 7010 but not too many.

Personally a 7810 50k is IMO one of the best tractors JD ever made. I wouldn't be worry about the hours. if its been properly maintained they'll go for another 10,000 hours.

Pretty much as above. The hpcr 8.1 is a reliable unit.. Just as good as the 7810 mechanical pump. In saying that... Theres not a lot a difference between the late 7810 and 78/7920.. Few more electrics which all arent bad except the small blade fuse box and hydraulic pump is on the front of the transmission.




All are a good machine easily capable of 10k + hours. Worked on one with 19k the other week.
 
Pretty much as above. The hpcr 8.1 is a reliable unit.. Just as good as the 7810 mechanical pump. In saying that... Theres not a lot a difference between the late 7810 and 78/7920.. Few more electrics which all arent bad except the small blade fuse box and hydraulic pump is on the front of the transmission.




All are a good machine easily capable of 10k + hours. Worked on one with 19k the other week.
classic tractor did interesting article about jd 7600 series,
 

NZ Tech

Member
Location
California
classic tractor did interesting article about jd 7600 series,
Im just waiting for someone to pipe up about blowing head gaskets!!. Which never happen on this machine. Ive seen them run on the red with 6mtr power harrows on all day and it never worried them.

A lot of local farmers are buying these at 10k hrs and tidying them up a little bit and just using them...
 

Thick Farmer

Member
Location
West Wales
Im just waiting for someone to pipe up about blowing head gaskets!!. Which never happen on this machine. Ive seen them run on the red with 6mtr power harrows on all day and it never worried them.

A lot of local farmers are buying these at 10k hrs and tidying them up a little bit and just using them...
My 7600 blew the head gasket least year. :p

I didn't have time to sort it out so tipped three bottles of Steel Seal into it and it fixed itself!(y)
 

Darren

Member
Location
Lincolnshire
Im just waiting for someone to pipe up about blowing head gaskets!!. Which never happen on this machine. Ive seen them run on the red with 6mtr power harrows on all day and it never worried them.

A lot of local farmers are buying these at 10k hrs and tidying them up a little bit and just using them...
7800 I had, new August 93. Did over 100000 hrs. 19 speed power shift. Still as sweet with the hrs on. Used no oil bar a litre towards service time. Despite what some frustrated man child says on here about engines "hanging on". That would. Show it a hill with the plough and it would dig heels in, bark and carry on. Real torquey engine and good on fuel too.
L136VVL if anyone had it after me
 

John 1594

Member
Location
Cambridgeshire
7800 I had, new August 93. Did over 100000 hrs. 19 speed power shift. Still as sweet with the hrs on. Used no oil bar a litre towards service time. Despite what some frustrated man child says on here about engines "hanging on". That would. Show it a hill with the plough and it would dig heels in, bark and carry on. Real torquey engine and good on fuel too.
L136VVL if anyone had it after me

wonder if anyone on here has any of the old deeres i used to drive years ago, we had a 7710, that was R889 YAV i think, my 6600 was P984 FFL, and the 6620 what replaced it was AEO4 HAU
 

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Cereals 2020 goes online


The Cereals Event is to move online for the first time ever to support the industry during the Covid-19 pandemic.

Producers may not be able to physically visit the Cereals Event this year, but they won’t miss out on any of the content as all the key features will now be delivered in a virtual sense, says event director Alli McEntyre. “These are challenging times and while we are disappointed to have...
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