KNUCKLE 2198767 - Caterpillar

STEERING CONTROL VALVE
1. Control valve. 2. Flow balance shims. 3. Cylinder flow shims.If both steering times (right and left) are slow, cylinder flow shims (3) must be added.4J6806 Shim thickness ... .048 in.(1.22 mm)One shim will change the steering times at high idle by approximately .1 second.Steering System Pressure Setting
Loosen the filler cap on the tank to permit the pressure in the tank to go down before installation or removal of any test equipment.
To check the pressure setting for the steering system:1. Install anti-pivot link (2) so the machine can not turn. If the anti-pivot link can not be installed, the pressure setting can be checked by an adjustment of the striker (stud assembly) that is not correct. This lets the front and rear frame stops come in contact.
STEERING CONTROL VALVE
1. Plug.2. Remove plug (1) from field test port and install a 0 to 4000 psi pressure gauge.
ANTI-PIVOT LINK INSTALLED
2. Anti-pivot link.3. Start the engine and operate it at a high idle.4. Turn the steering wheel until the relief valve opens. Note the indication on the gauge. The correct relief pressure is 2500 + 80 or - 20 psi (17 000 + 550 or - 440 kPa).If the pressure is not correct:a. Remove plug (4) from steering control valve.
STEERING CONTROL VALVE
3. Shims. 4. Plug.b. Add shims (3) to increase the pressure setting and remove shims if a decrease is necessary. Steering Slip Check
To check the steering wheel slip:1. Put the machine on a dry hard surface. Raise the bucket and release the brakes.2. With the engine at low idle, turn the steering wheel slowly through one revolution so that there is a minimum of articulation. Do this in both directions to get the feel of the steering action.3. Do this test three more times in each direction. Make a note of the time required for each of the revolutions of the steering wheel.4. Add the three times for each direction. If these totals are 60 seconds or more, the slip is acceptable.5. If the totals are less than 60 seconds, remove the spool from the steering valve. Turn the spool around in its bore (turn end for end). To do this, the spring, retainer, and shims must be installed on the opposite end of the spool. On some machines, this will correct the problem of manufacturing tolerances and the slip will then be acceptable.Neutralizer Valve
NEUTRALIZER VALVE
1. Striker. 2. Neutralizer valve.To check the adjustment of striker (1):1. Put a .50 in. (12.7 mm) ball of putty (or similar material) on the front frame stops.2. Raise the bucket about one foot and release the brakes.3. With the engine at high idle, steer rapidly into both stops.4. Thickness of the putty must be .25 .12 in. (6.4 3.0 mm) after the turns. This is the clearance between the frame stops when a full turn is made.5. If the clearance is not correct, adjust the strikers until the dimension is correct.Hitch Bearing Adjustments
Lower Hitch Bearing
1P5976 Bolt, 7/8"-9 NC × 7"