BLADE AS-UNIVERSAL 4220247 - Caterpillar

25. With the valve spool assembly in a vertical position, turn input shaft (35) in a clockwise direction until ball (37) is free from the groove in the input shaft. Remove input shaft (35) from valve spool (32).Assemble Steering Metering Pump
Clean all parts with a clean petroleum base solvent and air dry. Do not make dry with rags. Unless another indication is given, do not put oil on parts before assembly.
1. Inspect all parts for damage and make replacements if needed. 2. Install thrust washer (3), thrust bearing (4) and thrust washer (2) on the input shaft. Install snap ring (1) with tool (A). 3. Install ball (5) into ball seat in valve spool (6). Make sure the ball is in the ball seat and not in the through hole opposite the ball seat. 4. Install wave washer (7) on input shaft (8) over the thrust washer.5. Put input shaft (8) in position in valve spool (6) with ball (5) in alignment with the groove in the shaft.6. Slowly turn the input shaft in a clockwise direction until the thrust washer on the shaft makes contact with the valve spool. 7. Use torsion bar (9) as a gauge to put the valve spool in the center of its movement. This is the "NEUTRAL" position of the valve spool. Put the bar in position between the thrust washer and valve spool as shown. The valve spool must be in the "NEUTRAL" position before the drive ring is installed in the valve spool. The drive ring can be installed in the wrong position in the spool if the valve spool is not in the "NEUTRAL" position. 8. Install drive ring (10) into the valve spool. Make sure the drive ring is engaged with the input shaft splines. A small rotation of the input shaft will engage the drive ring completely. 9. Remove torsion bar (9) from the valve spool10. Turn input shaft (8) until it will not turn. The distance (X) must be approximately .350 in. (8.89 mm). This is the distance between the end of the valve spool and the thrust washer. If the distance is not correct, the drive ring is not installed correctly. 11. Install spacer (11) and torsion bar (12) in valve spool (6). 12. Make an alignment of the hose in the torsion bar with the hole in the input shaft and install needle roller (13).13. With a pin punch drive the needle roller approximately .03 in. (0.76 mm) below the outside diameter of the shaft. 14. Use tool (B) as shown to measure the distance from the machined surface of the pump housing to the bottom of the counterbore. Make a record of the distance measured. 15. Turn the pump housing over and put spacer (14) in position on the valve spool. Do not put a side force on the valve spool which can cause seizure of the closely fitted assembly.16. Install valve spool (6) in pump housing. Install the original thickness of shims.