SERVICE MANUAL - TM-5-3820-256-24-5

Fig. 16. Separating Compressor Wheel From Turbine Shaft

TM-5-3820-256-24-5 Drilling System Well Rotary Truck Mounted Air Transportable 600 Feet Capacity Model LP-12 NSN 3820-01-246-4276 Manual
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SERVICE MANUAL 11. Turn the center housing over on the bench and remove the capscrews and lock plates. Carefully lift the back plate from the center housing. 12. For further disassembly of the DT466 turbocharger, use the following steps: a. Remove the seal ring, thrust collar and thrust washer from the center housing (Fig. 18). The thrust spring located in the back plate is replaceable, but should not be removed unless replacement is necessary. Fig. 18 1. Center Housing 2. Anti-rotating Pins 3. Seal Ring 4. Thrust Collar 5. Thrust Spring 6. Back Plate 7. Thrust Washer b. With a sharp pick, remove the spiral bearing retainers from the bearing bore on the compressor side of the housing (Fig. 19). Remove the bearing. Turn the center housing over on the bench and remove the retainers and bearing from the turbine end (Fig. 19). Fig. 19 1. Bearing 2. Retainers 3. Center Housing Replace the two inboard retainers only if they appear to be damaged or worn. The inboard retainers are subject to distortion during removal so they must be replaced with new retainers if removed. c. Remove the seal ring from the thrust collar (Fig. 20). Discard the seal ring. Fig. 20 1. Thrust Collar 2. Seal Ring CTS-4104 PRINTED IN UNITED STATES OF AMERICA Page 13

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