I'm trying to get an old rig back on the road. It's been sitting about 4 months.
I find the key is VERY hard to turn. It has a tilt steering wheel, but the position makes no difference. The front wheel position makes no difference. It's always hard to turn. It reaches a rotation point where it lights the glow-plug light, but no farther.
It was about 30 degrees when I had the problem; it rotated freely a month or so back at 50 degrees.