Four Bolt Flanged Fittings

CM992600061-UN-12JAN00

1. Clean sealing surfaces (A) and inspect. Scratches cause leaks. Roughness causes seal wear and uneven levelling causes seal extrusion; therefore, if defects cannot be polished out, replace component.

2. Install the correct O-ring (and backup washer if required) into groove using petroleum jelly to hold it in place.

3. Split flange (B): Loosely assemble split flange halves. Make sure split is centrally located and perpendicular to port. Hand-tighten bolts to hold parts in place. Do not pinch O-ring (C).

4. One piece flange (D): Place hydraulic line in center of flange and install four bolts. Flange must be centrally located on port. Hand-tighten bolts to hold flange in place. Do not pinch O-ring.

5. After components are properly positioned and bolts are hand tightened, tighten one bolt, then tighten the diagonally opposite bolt. Tighten the two remaining bolts. Tighten all bolts as specified in the chart below.

6. Do Not use air wrenches. Do Not tighten one bolt fully before tightening the others. Do not overtighten.