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 CYLINDER VALVES AND ASSOCIATED PARTS REPAIR 0145 00 THIS WORK PACKAGE COVERS: Cleaning, Inspection, and Repair INITIAL SETUP: Tools and Special Tools: General mechanic’s tool kit (item 121, WP 0176) Outside micrometer caliper set (item 17, WP 0176) Spring resiliency tester (item 118, WP 0176) Expendable Materials: Prussian blue paste (item 25, WP 0173) Personnel Requirements: Track Vehicle Repairer (1) 63H10 Equipment Conditions: Cylinder assembly removed (WP 0133) Valves removed (WP 0135) CLEANING 1. See Work Package 0028 for General Cleaning Procedures. INSPECTION All parts must be inspected with care. Replace parts if damage or wear exceeds allowable limits. 1 2 1. See Work Package 0028 for General Inspection Procedures. 2. Inspect exhaust (1) and intake (2) valves for evidence of pitting, imperfect seating, cracks, or warping of valve head. Replace damaged valves. NOTE Heavy discoloration, burning, erosion, or heavy carbon deposit on valve face indicates a warped valve. A light frosted appearance or minor discoloration on valve face does not indicate a warped or unserviceable valve. 3. Inspect exhaust (1) and intake (2) valve stems and the locking groove in the stems for pitting, scoring, cracks, or damaged ends. Replace valves if damage is found. WP 0145 00-1