UPPERSTRUCTURE / Swing Device Assemble Swing Motor IMPORTANT: Install the inner race of bearing (5) with the flange facing to the stepped side of shaft (6). 1. Install the inner races of bearings (5, 19) into shaft (6) by using a press. IMPORTANT: Install oil seal (4) with the lip facing to the bearing (5) mounting side. 2. Push oil seal (4) into casing (3) by using a plate. 3. Install the outer race of bearing (5) to casing (3) by using a bar. IMPORTANT: Wind the tape onto the spline at the end of shaft (6) in order not to damage the lip of oil seal (4). 4. Set casing (3) in horizontal and install shaft (6) to casing (3). 5.
Place casing (3) with the valve casing (25) mounting side facing upward. Install shoe plate (7). 6. Align the notches on retainer (10) and plate (9). Install plungers (8) (9 used) to retainer (10) and plate (9). Apply hydraulic oil into the plunger hole on rotor (11). Insert the plunger (8) assemblies (9 used) into rotor (11). 7. Set casing (3) in horizontal and install the rotor (11) assembly to shaft (6). IMPORTANT: 4 notches are on the outer side of plate (13). 4 notches are at the spline teeth side of friction plate (12). Align each notch at the same place when installing. 8. Place casing (3) vertically. Alternately install plates (13) (4 used) and friction plates (12) (3 used). 9.
Install O-rings (14, 15) to casing (3). NOTE: Grease to O-rings (14, 15) prevents from damaging when inserting brake piston (16). 10. Install brake piston (16) to casing (3). NOTE: If it is not easy to install brake piston (16) due to the resistant force from O-rings (14, 15), tap O-rings evenly by using a plastic hammer. 11. Install springs (17) (20 used) to brake piston (16). W2-6-25