3-17.5 Hydraulic Ram Replacement, Model 1730-EG-100 (AVUM) - Continued.
Refer to figure 3-22 and install the Hydraulic Ram Assembly as follows:
Arrange replacement ram assembly and attaching parts retained during removal.
Thread ram assembly (11) into trunnion (14) until it bottoms out; back off until the hydraulic inlet hole is
facing outward from the cradle and slightly above parallel with the trunnion.
Over tightening the ram assembly setscrew can prevent the ram from operating properly.
Install the ram assembly setscrew (13) and plug; only tighten until snug.
Thread clevis (10) into the hydraulic ram pistol(15) and fully extend the ram.
To ensure proper operation, the clevis must be threaded into ram piston until distance from
trunnion to centerline of hole in clevis is 3.915 inches (9.94 cm). The clevis should be
configured with the long length of slot facing up and the short side facing down.
Measure the distance from the face of trunnion (14) (inboard side) to centerline of holes in clevis (10);
measurement should be 3.915 inches (9.94 cm) when piston in bottomed in ram.
Over tightening the ram assembly setscrew can crack or dent interior surface of hollow piston
shaft and prevent the ram from operating properly.
If measurement is incorrect, the clevis to piston relationship must be adjusted. To maintain
clevis configuration, the ram piston is rotated rather than the clevis, until proper measurement
Hold clevis (10) and rotate ram piston (15)until 3.915 inches (9.94 cm) measurement is achieved;
tighten the clevis setscrew (13).
Rotate the axle down and align each clevis with an axle arm.
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