Daniel
Member
- Location
- Mildenhall, Suffolk
i have a 398, bought second hand, in the 2000 hours i have had it, it has had a water pump n altenator, also a few bulbs n switches , lift pump n master cylinder but needed these when i bought it
i dont think it has ever been split, hours now around 7000, none of the problems you mention
The 390t was nowhere near as bad on clutches as the 399, as I recall the 399 had a different type of clutch (ceramic?) which was kinder on the left leg but it didn't last long. In over 11k hours on our three JD's they haven't been split, nothing more complex than a bolt on turbo and a 3 bolt on oil pumps for the 6310se, out of that JD paid for all but 1 pump, down time of about a week between them. Oil pumps I think due to the 6310se being fitted with a very basic pump, a cost saving too far. Bizarrely all pump failures in the first 2500 hours and nothing in the last 3000, maybe because it's simply been a sprayer/fert tractor since then?
The essential problem with the 399 was its engine was too powerful for its antiquated engineering, it wasn't a bad tractor as such, they'd just skimped too much on the r + d.