TM-9-2815-205-24 Technical Manual for M113 Engine 6V53 6V53T Download
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ADJUST WARNING Avoid contact with hot manifolds, pulleys, and other moving parts. Wear proper ear protection when running engine. Failure to comply may result in injury to personnel. NOTE To adjust engine, start with five 0.010-inch shims and five 0.078-inch shims in governor spring pack. Buffer screw must project 5/8 in. (16 mm) beyond locknut or interference will result during no-load speed adjustment. 1. Start engine and operate until coolant outlet temperature is 160–185°F (71–85°C). 2. Remove load from engine and place speed control lever (Figure 5, Item 22) in FULL FUEL position. Note engine speed. Maximum speed should be approximately 2965 rpm. 3. Stop engine and, if necessary, adjust no-load speed as follows: CAUTION Do not jar high speed spring and plunger assembly (Figure 5, Item 32) during removal or low speed spring and cap may drop into governor. a. Loosen idle speed screw (Figure 5, Item 8) and unscrew retainer nut (Figure 5, Item 28) from side of governor housing (Figure 5, Item 27) using retaining nut wrench (Figure 5, Item 33). Remove high speed spring and plunger assembly (Figure 5, Item 32). NOTE Removing shims will decrease engine speed and adding shims will increase engine speed. Each 0.010-inch shim will change engine speed approximately 10 rpm. b. Remove high speed spring (Figure 5, Item 29) from plunger (Figure 5, Item 31) and add or remove shims (Figure 5, Item 30) as required to attain desired engine no-load speed. c. Place high speed spring (Figure 5, Item 29) on plunger (Figure 5, Item 31) and install assembly (Figure 5, Item 32) in governor housing (Figure 5, Item 27). Thread retainer nut (Figure 5, Item 28) into governor housing and tighten using retaining nut wrench (Figure 5, Item 33). 4. Start engine and check maximum no-load speed. Repeat Steps 1–3 as necessary to attain desired no-load speed of 2965 rpm. Idle Speed WARNING Avoid contact with hot manifolds, pulleys, and other moving parts. Wear proper ear protection when running engine. Failure to comply may result in injury to personnel. TM 9-2815-205-24 0100 0100-6