Transmission/ Engine Spline Drive - TM-9-2350-277-20-2

Transmission/ Engine Spline Drive - TM-9-2350-277-20-2_208

Transmission/ Engine Spline Drive - TM-9-2350-277-20-2_210

TM-9-2350-277-20-2 Carrier Personnel Full Tracked Armored M113A3 2350-01-219-7577 Carrier Command Post Light Tracked M577A3 2350-01-369-6085 Manual
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TM 9-2350-277-20-2 PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS), INCLUDING LUBRICATION INSTRUCTIONS — Continued 0155 00 ITEM NO. INTERVAL MAN- HOUR ITEM TO BE CHECKED OR SERVICED CREWMEMBER PROCEDURE EQUIPMENT NOT READY/ AVAILABLE IF: d. Place a small breaker bar, about 2 or 3 feet long, across the two bolts to check backlash on the spline drive coupling. NOTE Although you can turn the engine by applying constant pressure, the idea is to detect any backlash generated between the engine and transmission mating splines. e. As with the power method, a good spline drive coupling will produce a muffled sound, while a bad spline drive coupling will produce a distinctive metallic clanking sound. c Semi- Annual Transmission/ Engine Spline Drive a. The third type of inspection is the visual method. Studs and nuts are not centered (approximately 1/4 inch) in flywheel clearance holes. WARNING Fuel cut-off control at driver’s position must be pulled all the way out to prevent engine from starting. Personnel could be injured or killed if engine starts during this PMCS check. b. Two people are required to perform the visual method. One will be inside the vehicle manually jerking the engine. Meanwhile the second will be under the vehicle observing the relative motion between the flywheel’s clearance holes and the spline drive ring’s studs and nuts. 0155 00-171

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