TM-9-2350-273-BD M60 M48 Battle Damage Assessment and Repair Download
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TM 9-2350-273-BD COOLING SYSTEM SECTION II. BDAR Procedures 5-4.. COOLING FAN FAILURE General Information: The AVDS-1790 engine utilizes two cooling fans. The fan at the front of the engine primarily cools the engine oil coolers. The rear fan cools the transmission oil coolers. A damaged fan should be replaced. However, the transmission can function much longer at a higher temperature than the engine. The rear fan can be installed on the front drive. However, the rear fan drive must not be disabled because it drives the engine fuel injector pump. Fans from AVDS-1790 series engines are interchangeable on the M48A5, M60, M60A1, M60A3, and M88A1 vehicles. If a fan is defective operate at low speeds and monitor power pack oil temperatures. Limitation: Reduced mobility Personnel/Time Required: 2 to 3 soldiers Less than 2 hours Materials/Tools: Replacement fan, or rear fan Spacer, fan hub sleeve, NSN 4910-00-795-7952 Procedural Steps: 1. Remove rear deck. 2. Remove defective fan assembly. 3. When replacement fan is not available, replace the front fan with rear fan. The overflow of air from front fan will help cool the transmission. 4. Install the fan spacer in place of the removed fan. 5-3