Komatsu Dozer Steering Issue

My D37P-5A won't turn to the left. When I pull the stick to the left, I can hear it put a load on the engine, but it doesn't turn. The linkage is moving all the way into wherever it disappears into the machine housing. Looks to be the same amount of movement as the right turn makes.

Also, the angle button on the blade control has quit working.

Any help or advise is greatly appreciated.

Komatsu Dozer Steering Issue