Torque Values TM1859 (14JUL04) 00-03-13 700H Crawler Dozer 071404 PN=37 Service Recommendations For Metric Series Four Bolt Flange Fittings –UN–01MAR90 T6890BB A—Sealing Surface B—Split Flange C—Pinched O-Ring D—Single Piece Flange 1. Clean sealing surfaces (A). Inspect. Scratches DO NOT use air wrenches. DO NOT tighten one cause leaks. Roughness causes seal wear. cap screw fully before tightening the others. DO Out-of-flat causes seal extrusion. If defects cannot NOT over tighten. be polished out, replace component. TORQUE CHART * 2. Install the correct O-ring (and backup washer if Thread ** N•m lb-ft required) into groove using petroleum jelly to hold it M6 12 9 in place.
M8 30 22 M10 57 42 3. Split flange: Loosely assemble split flange (B) halves. Make sure split is centrally located and M12 95 70 perpendicular to the port. Hand tighten cap screws M14 157 116 to hold parts in place. Do not pinch O-ring (C). M16 217 160 M18 334 246 4. Single piece flange (D): Place hydraulic line in M20 421 318 center of flange and install four cap screws. Flange *Tolerance ±10%. The torques given are enough for the given must be centrally located on port. Hand tighten cap size connection with the recommended working pressure. screws to hold flange in place. Do not pinch O-ring.
Increasing cap screw torque beyond these amounts will result in flange and cap screw bending and connection failures. 5. After components are properly positioned and cap **Metric standard thread. screws are hand tightened, tighten one cap screw, then tighten the diagonally opposite cap screw. Tighten two remaining cap screws. Tighten all cap screws as specified in the chart below. 04T,90,K175 –19–21JAN92–1/1 00 03 13 TORQUE CHART * Thread ** N•m lb-ft M6 12 9 M8 30 22 M10 57 42 M12 95 70 M14 157 116 M16 217 160 M18 334 246 M20 421 318 *Tolerance ±10%. The torques given are enough for the given size connection with the recommended working pressure.
Increasing cap screw torque beyond these amounts will result in flange and cap screw bending and connection failures. **Metric standard thread.