AIR CLEANER GP 1149089 - Caterpillar

Figure 24. Pintle bearing spacer height with respect to the pintle face.
Figure 24a. Measuring height of pintle bearing spacer with respect to the pintle face. If the calculated shim thickness is greater than 0.020, another shim must be added to the opposite side of the yoke to reduce the total shim thickness to less than 0.020 inch. Shim thickness at either pintle must not exceed 0.020 inch. This is necessary to provide proper "O"ring compression and prevent pintle seal leakage.e. Install "O"ring (52) and correct shims (51). Slide cover (50) over yoke pintle and flush against the shims. Insert screws (49) through pintle cover (50) and thread into pintle face. Cross torque screws (49) to 175-185 lb. in., (19.77 - 20.9 N m). The yoke (61) will be stiff but should be loose enough to be moved by hand, approximately 20 lb. in. torque. The tightness/drag indicates the bearings are preloaded. If the yoke cannot be moved by hand, the preload is too great. Repeat the preload adjustment until correct.4. Install shaft (48) into front shaft bearing (62) as follows: Use a short piece of 1 1/2 inch heavy wall tubing (approximately 6 inches long) over the drive spline of the shaft. The tubing must be long enough to go through the shaft. The tubing must be long enough to go through the shaft seal end of the pump and make contact with the inner race of the front bearing. Press the shaft through the bearing with an arbor press, until the bearing bottoms against the shoulder of the shaft. See Figure 25.
Figure 25. Front bearing installation5. Remove the short piece of tubing and turn shaft bearing (62) in its race with the end of the shaft. The bearing rollers must turn free and smooth.6. Tape the spline end of drive shaft (48) with plastic tape to prevent cutting new shaft seal (64). Start taping the shaft close to the housing and work toward the end of the shaft. Install a new shaft seal (64) (garter spring inward) in position over the shaft and press evenly into the housing. Use shaft seal driver shown in Figure 14. The seal must be positioned just below the retaining ring groove. Install retaining ring (63) into the housing. Use internal Truarc pliers to install retaining ring. If the shaft bearings, shaft, valve block, or housing were not replaced, use the bearing spacer removed during the disassembly procedure to preload the shaft bearings and perform step I. 13. If preload adjustment is necessary, perform steps I. 7. through I. 13.7. Obtain a shaft bearing spacer kit and install the thickest bearing spacer (37) over shaft (48) with the chamfer facing into the housing (toward the shoulder on the shaft).8. Slide new bearing (34) on the shaft and up against spacer (37). The small diameter of the tapered roller bearing must face out of the housing.9. Install housing (32) to valve block (75) without gasket (33) and rotating group. Turn shaft (48) to