TM-9-2520-234-35 Technical Manual for M109 Transmission XTG-411-2A Download

CHAP 4, SEC II TROUBLESHOOTING PROCEDURES PAR 65-69 c. Operating Instructions. Refer to the applicable TM-10 manual for instruc- tions on operating the transmission while driving the vehicle in which it is installed. d. Oil Supply. supply information. Refer to par. 6 for oil e. Power Train Adjustments. Refer to par. 234 for adjustment procedures. f. Oil Pressures. Refer to TABU- LATED DATA in par. 7 for the power train oil pressure schedule. 66. TROUBLESHOOTING – BEFORE REMOVAL OR OPERATION a. Do not operate the vehicle prior to completing the procedures described in this paragraph. Refer to par. 63, above, for the purpose of these inspections. In- spect for oil leakage. Visually inspect all split lines, connections, valve bodies, and plugs for oil leaks. Oil leakage at split lines may be caused by loose mounting bolts or defective gaskets. Tighten all bolts where leakage is found. If mounting bolts are tight and oil continues to leak, install a new gasket. Note: Inspect power train again for oil leakage after starting the vehicle engine. Refer to par. 67, below. b. Inspect the power train for loose components and linkage. Inspect for damaged or broken external components. Check for the proper operation of steer, range selector and brake controls before starting the vehicle engine. Refer to par. 234. 67. 66, TROUBLESHOOTING – BEFORE REMOVAL AND DURING OPERATION a. General. If the inspection in par. above, does not reveal the cause of the failure, and the vehicle is operable, further troubleshooting is necessary. Do not remove the power train from the ve- hicle until the causes of trouble, listed in Table IV, TROUBLESHOOTING, below, are checked. Refer to par. 63, above, for the purpose and scope of these trouble- shooting procedures. In order to make a thorough test of the power train while it is mounted in the vehicle, be sure that the engine is properly tuned and that the oil level in the power train is correct (refer to par. 6). Inspect again for oil leaks after starting the engine. b. Troubleshooting Table. This trou- bleshooting information will assist mech- anics in diagnosing and correcting power train malfunctions. Use Table IV, TROU- BLESHOOTING, below, in conjunction with pars. 233 and 234, TESTS AND ADJUST- MENTS. In Table IV, the letters shown opposite the malfunction indicate the probable causes of trouble in the order in which they should be checked. The in- structions in the last column are to be followed in correcting the malfunction. 68. TROUBLESHOOTING TESTS All of the test prescribed after re- build may be applied to a power train in which a malfunction is suspected (par. 233). 69. TROUBLESHOOTING - POWER TRAIN REMOVED FROM VEHICLE When the malfunction of a power train is not ascertained by tests before removal from the vehicle, the power train should be mounted in a test stand and checked. Refer to pars. 233 and 234. Particular attention should be given to correct ad- justment and proper oil level in every power train test. 70 Change 2