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 COOLER REPLACEMENT, ENGINE AND TRANSMISSION 0072 00 INSPECTION (Continued) 6. Check operation of thermostatic bypass valves. a. Immerse valve in warm water. Check temperature of water with an accurate thermometer (item 119, WP 0176). Gradually raise temperature of water to temperature indicated on valve cover. (1) Valves marked 148 °F must travel 1/4-inch between 90 and 150 °F. (2) Valves marked 185 °F must travel 1/4-inch between 110 and 185 °F. (3) Replace valve assembly when travel is less than 1/4 inch. b. Remove valve from water and clean with cleaning compound solvent (item 8, WP 0173) or mineral spirits. 7. Check oil cooler hoses. a. Inspect oil cooler outlet and inlet hoses for breaks in woven shielding. Replace hose if damage is found. b. Test hoses at 400 psi. Replace hoses that do not pass pressure test. 8. Check oil cooler screens. a. Inspect oil cooler screens for cracked or broken mounting brackets. Replace if found. b. Straighten bent screens to as near original shape as possible. c. Check for torn or broken screening. Replace screens that are unserviceable. INSTALLATION NOTE Adapter elbows for oil into and out of coolers all look the same. However, one of the elbows is shorter on engine models 2CA and 2DA; it goes on the left bank cooler and is the lower fitting (oil into cooler). Engine model 2DR adapter elbows are all the same length. 39 40 37 38 28 23 1. Install transmission oil cooler (28) thermostatic bypass valve (37). a. Lubricate and put in place new gasket (38) (item 315, WP 0175). b. Lubricate threads of thermostat (37) and install. 2. Install engine oil cooler (23) thermostatic bypass valve (39). a. Lubricate and put in place new gasket (40) (item 315, WP 0175). b. Lubricate threads of thermostat (39) and install. WP 0072 00-7