TM-9-2320-361-24-2 Field Maintenance Manual Volume 2 for M44A2 Series Trucks
Page 560 of 1144
TM 9-2320-361-24-2 0349 00 0349 00-2 TRANSMISSION POWER TAKEOFF (PTO), COVER, AND GASKET MAINTENANCE (Contd) REMOVAL (Contd) CAUTION Prevent dirt from entering transmission and power takeoff (PTO). Failure to do so may cause damage to equipment. 3. Remove six nuts (6), lockwashers (7), PTO (5), and gasket (4) from transmission (1). Discard gasket (4) and lockwashers (7). 4. Remove gasket material and debris from transmission (1) and PTO (5) mating surfaces. INSPECTION 1. Check PTO (5) and transmission (1) mating surfaces for scratches, cracks, and galling. Refer to TM 9-2520-246-34-1 if scratched, cracked, or galled. 2. Check transmission gear teeth (2) for wear, cracks, and discoloration. Refer to TM 9-2520-246-34-1 if gear teeth are worn, cracked, or discolored. 3. Inspect stud(s) (3). Replace stud(s) (3) if damaged (WP 0021 00). INSTALLATION NOTE Ensure transmission output gear is stabilized while measuring backlash. 1. Shift into second gear (TM 9-2320-361-10). 2. Install new gasket (4) and PTO (5) on transmission (1) with six nuts (6). Tighten nuts (6) 15–20 lb-ft (20–27 N•m). 3. Set dial indicator on PTO (5) to measure PTO input gear (8) backlash. a. Check PTO backlash. Backlash should be 0.008–0.012 in. (0.203–0.305 mm). b. If backlash is 0.008–0.012 in. (0.203–0.305 mm), perform steps 5 through 7. NOTE It may be necessary to use more than one gasket to obtain 0.008–0.012 in. (0.203–0.305 mm) backlash. Each gasket will change backlash approximately 0.006 in. (0.152 mm). c. If backlash is less than 0.008 in. (0.203 mm), remove dial indicator and PTO (5) from transmission (1) and continue with step 7 using two new gaskets (4) to obtain 0.008–0.012 in. (0.203–0.305 mm) measurement. d. If 0.008–0.012 in. (0.203–0.305 mm) backlash measurement cannot be obtained, replace (WP 0132 00) or repair (TM 9-2520-246-34-1) transmission (1). 4. Remove dial indicator from PTO (5). 5. Remove six nuts (6), PTO (5), and gasket (4) from transmission (1). 6. Apply sealing compound on gasket (4) and transmission (1) mating surfaces. 7. Install new gasket(s) (4) and PTO (5) on transmission (1) with six new lockwashers (7) and nuts (6). Tighten nuts (6) 15–20 lb-ft (20–27 N•m).