Under-inflated tires.

Inflate the tires to the specified pressure.

The steering wheel is rubbing against the steering column cover.

Adjust the steering column cover.

The steering shaft bearings are tight or frozen.

Replace the bearings.

There is a binding in the steering linkage.

Replace any of the affected parts.

Misalignment of the steering gear to the column.

Align the steering column.

The suspension joints and the steering linkage are not adequately lubricated.

Lubricate the suspension joints and the steering linkage. Refer to Fluid and Lubricant Recommendations in Maintenance and Lubrication.

Sticking or plugging in the steering gear valve spool.

Replace the steering gear. Refer to Steering Gear Replacement .

Improper front wheel alignment.

1. Inspect the front wheel alignment.
2. Adjust the front wheel alignment to specifications.

A kink in the supply hose.

Replace the hose.