3-17.5 Hydraulic Ram Replacement, Model 1730-EG-100 (AVUM) - Continued.
To prevent injury to personnel or damage to equipment, release all pressure from the
hydraulic pump before starting any maintenance action. Release hydraulic pressure by
rapidly rotating the pressure release knob counterclockwise.
Refer to figure 3-22 and remove the Hydraulic Ram Assembly as follows:
Place drip pan under wheels assembly.
Remove hydraulic pressure from system by rapidly rotating the pump release valve knob
Remove wheel assembly.
Remove cotter pin (1).
Remove castle nut (2), and retainer (3).
Remove wheel assembly (4) from axle hub (5).
Both devises must be disconnected in next step.
Disconnect hydraulic ram clevis (10) by removing cotter pin (6), two flat washers (7), and clevis pin (8).
Retain parts for connecting replacement ram clevis.
Rotate axle to see clevis set screw (9) and loosen set screw.
Rotate axle to clear clevis, unthread clevis (10) from hydraulic ram piston (15), and retain clevis for
Installation in replacement ram.
Disconnect hose assembly (17) from ram assembly (11) and drain fluid Into drip pan.
Remove setscrew (13) and plug from trunnion (14), and retain for installation of replacement ram.
Unscrew ram assembly (11) from trunnion (14).
10. Install new ram assembly in accordance with B below.
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