TM-9-2815-220-24 Maintenance Manual for AVDS-1790-2CA AVDS-1790-DA and AVDS-1790-2DR Engines Download
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TM 9-2815-220-24 OIL PUMP REPAIR 0154 00 THIS WORK PACKAGE COVERS: Disassembly, Cleaning, Inspection, Repair, and Assembly INITIAL SETUP: Tools: Depth micrometer set (item 48, WP 0176) General mechanic’s tool kit (item 121, WP 0176) Inside micrometer caliper set (item 16, WP 0176) Machine reamer set (item 92, WP 0176) Outside micrometer caliper set (item 17, WP 0176) Socket wrench (item 107, WP 0176) Socket wrench adapter (item 3, WP 0176) Spring tester (item 117, WP 0176) Telescoping gauge set (item 54, WP 0176) Torque wrench, 0-300 inch-pounds (item 124, WP 0176) Torque wrench, 0-175 foot-pounds (item 127, WP 0176) Fabricated Item: Modified socket (item 12, WP 0177) Mandatory Replacement Parts: Ball bearing (item 246, WP 0175) Ball bearing (2) (item 291.1, WP 0175) Key washer (item 26, WP 0175) Self-locking nut (14) (item 33, WP 0175) Self-locking nut (item 219, WP 0175) Spring (item 287.1, WP 0175) Spring (item 346.1, WP 0175) Expendable and Durable Items: Lubriplate (item 23, WP 0173) Lock wire (item 44, WP 0173) Personnel Requirements: Track Vehicle Repairer (1) 63H10 Equipment Conditions: Engine on maintenance stand (WP 0130) Oil pump removed (WP 0153) DISASSEMBLY There are two oil pump assemblies in use and they are interchangeable. The major difference is the drive gears: on the newer model (12468945) the spur gear to cluster gear ratio provides a higher operating speed of the pump. This higher speed increases oil flow capability. If you have the older pump (11683982), it is acceptable for use, but is not supported in the RPSTL nor in the repair manual. You can identify which pump you have by counting teeth (A) on the smaller gear circle of the cluster gear. The high-speed pump has 26 teeth and the older low- speed pump has 24. Cluster Gear A Captive Screw Oil Pump Assembly WP 0154 00-1