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 COOLING FAN INSPECTION 0053 00 INSPECTION (Continued) 2. Visually inspect cooling fans. Use a magnifying glass (item 73, WP 0176) and a strong light. a. Look for cracks, nicks, and scratches. (1) Any crack (especially in the area of a bolt hole) is sufficient cause for replacement of a fan. (2) Nicks and scratches require a judgement call: small scratches (1/32-inch deep by 1/16- inch long) and nicks (1/32-inch deep by 1/4-inch long) are acceptable while large ones are not. The following pictures are examples of acceptable and unacceptable nicks. The dimes in the pictures are for size referencing. If in doubt replace the fan. Acceptable Nick Unac ceptable Nick b. Replace a cooling fan that has bent, broken or warped blades. c. Replace a fan if bolt holes are elongated or show evidence of wear. END OF WORK PACKAGE WP 0053 00-2