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 INSPECTION (Continued) NOTE Do not interpret termination of chrome plating on stem as indication of a cracked valve stem. 4. Measure outside stem diameters of exhaust (1) and intake (2) valves. Replace valves that do not meet specifications in the following table. Location Sizes and Fits of New Parts inches (mm) Wear Limits A (exhaust valve stem) 0.5570 (14.1478) 0.5580 (14.1732) 0.5565 (14.1351) B (intake valve stem) 0.4975 (12.6365) 0.4980 (12.6492) 0.4970 (12.6238) 1 2 5. Lightly blue face of valve inserts (3 and 4) with Prussian blue (item 25, WP 0173) and place valves (1 and 2) into position on valve seat insert. 6. Rotate valves (1 and 2) one-half turn on insert and check for Prussian blue contact. Valve must show full contact (360°), as indicated by Prussian blue transfer, to qualify as a serviceable valve. Valves that are not too badly damaged may be ground to be made serviceable. 2 4 3 EXHAUST INTAKE 1 WP 0145 00-2