NUT 0950794 - Caterpillar

check the steering wheel slip, perform the following procedure:
Put the machine on a dry, hard surface. Disengage the brakes.
With the engine at low idle, turn the steering wheel slowly through one revolution so that there is a minimum of articulation. Perform this in both directions to get the feel of the steering action.
Perform this test three more times in each direction. Make a note of the time required for each of the revolutions of the steering wheel.
Add the three times for each direction. If these totals are 60 seconds or more, the slip is acceptable.
If the totals are less than 60 seconds, remove the spool from the steering control valve. Turn the spool around in its bore (turn it end for end). To do this the spring, retainer, and shims must be installed on the opposite end of the spool. In some cases this will correct the problem of manufacturing tolerances and the slip will then be acceptable.