7520

SVcummins · Jan 14, 2022

Could a 7520 have differential lock ?

fdt860 · Jan 14, 2022

(quoted from post at 16:03:53 01/14/22) Could a 7520 have differential lock ?

Not from factory.
A 4620-40 rear diff. can be fitted on the front.

On a 4wd, When pulling hard and operator is moving quickly the steering wheel back and forth to go out of some ruts or mud holes, the differential sun gears are moving very quickly back and forth without the diff lock, thus destroying them.

John Deere had an anti friction kit released for the 7520. It adressed the weak differential issue. 2wd also had the kits. If tractors were operated with diff lock on, less issues would have occured.

7520

SVcummins

Well-known Member

fdt860

Well-known Member

Similar threads