UPPERSTRUCTURE / Swing Device Assemble Swing Motor IMPORTANT: Install the inner race of bearing (3) with the flange facing to the stepped side of shaft (4). 1. Install the inner races of bearings (3, 22) to shaft (4) by using a press. IMPORTANT: Install oil seal (2) with the lip part facing upward (the rotor (9) side). 2. Install oil seal (2) to casing (1) by using a plate. 3. Install the outer race of bearing (3) to casing (1) by using a bar and hammer. IMPORTANT: Wind the tape onto the spline at the end of shaft (4) in order not to damage oil seal (2). 4. Install shaft (4) with casing (1) in horizontal. 5.
Hoist valve casing (28) and set casing (1) vertically with the mounting surface facing upward. Install shoe plate (5) to casing (1) with the chamfered side of inside facing inside. IMPORTANT: Install retainer (8) to plunger (6) with the notch on retainer (8) facing to the shoe plate (5) side. 6. Align the notch and install retainer (8) to plate (7). Install plungers (6) (9 used). IMPORTANT: After applying hydraulic oil to the plunger hole on rotor (9), install plunger (6). 7. Install the plunger (6) assemblies (9 used) to rotor (9). 8. Hoist and set casing (1) horizontally. Install the rotor (9) assembly to shaft (4). IMPORTANT:
There are four notches on the outer side of plate (10) and on the spline side of friction plate (11) respectively. Align each notch at the same place when installing. 9. Hoist and set casing (1) vertically. Alternately install plates (10) (4 used) and friction plates (11) (3 used) to casing (1) and rotor (9). 10. Install O-rings (17, 18) to casing (1). 11. Align the matching mark and install brake piston (19) into casing (1). NOTE: If it is difficult to install brake piston (19), tap brake piston (19) by using a plastic hammer evenly. 12. Install springs (20) (24 used) to brake piston (19). W2-6-29