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TB-9-2350-368-25 Powerplant Test Stand M113A2 M113A3 M548A1 M548A3 Download

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TB 9-2350-368-25 4-16 17. Install tachometer cable on engine tachometer adapter and connect to tachometer. 18. Connect alternator, accessory, and starter cables to 100-amp connector panel (Figure 2-18). Ensure that connections are for M113A2/M548A1 only. 19. Connect STE/ICE-R set to engine components, shunt, and batteries. Refer to TM 9-2350-261-20-1 and TM 9-4910-571-12&P for TK mode connections. 20. Connect engine fuel line quick disconnect halves to fuel line adapter (see Figure 2-15) and fuel line adapter to powerplant test stand quick disconnect halves. 21. Install transmission stall test tool (see Figure 2-27) on powerplant test stand with three screws, washers, and nuts. 22. Connect transmission stall test tool to transmission output shaft with four screws and washers. 23. Fill transmission and engine with oil. Refer to appropriate TM. 24. Perform stall test as follows: CAUTION The stall check in this procedure is not allowed when engine is in vehicle. Using stall check can harm engine and/or transmission if not conducted properly. NOTE • The stall check will tell you if the powerplant is producing maximum power. If it is not, the check will tell you whether the engine or transmission is at fault. • If check fails and a faulty tachometer is suspected, verify tachometer reading by performing STE-ICE check number 10 before sending to next higher level of maintenance. • M113A2/M548A1 210 hp non-turbocharged engines shall be rated at 210 horsepower +/- 5 percent at 2800 rpm, using DF2 fuel. There will be an additional 10% decrease in horsepower when using JP8 fuel. The minimum horsepower allowed is 179.5. a) Run engine at 800 rpm for 3–5 minutes with range selector in 2–3 range until normal engine operating temperature is reached. b) In outside temperature is less than 85°F (29°C), normal operating temperature should be 160° to 200°F (71° to 90°C). If outside air temperature is greater than 85° F (29° C), normal operating temperature should be 160° to 225°F (71° to 107°C). CAUTION Limit stall test to 30 seconds. If you suspect a bad governor, do not perform stall check. c) Move range selector to the 2–3 range and push accelerator all the way down. Tachometer reading of 1900 to 2300 rpm indicates powerplant is operating correctly.