Quadratrac low range

[MY78CJ]

Probably been answered before but here goes
With engine off low range lever moves forward ok
With engine running and auto in gear lever will not move
What do I have to do to get jeep into low range
Hopefully someone can help me

 

[Greg]

try putting the gear selector in neutral with vehicle not moving.

 

[Greg]

try putting gear selector in neutral ,vehicle not moving,then try to engage low range,should go in.

 

[MY78CJ]

Thanks Greg,
Lever goes in a treat now