UNDERCARRIAGE / Travel Device Disassemble Travel Motor 6. Remove rotor (13), springs (14) (6 used), bushing (15), retainer (16) and plungers (17) (9 used) from housing (7) in this order. 7. Remove plates (28) (4 used) and friction plates (27) (4 used) from housing (7). CAUTION: Travel motor weight: 137 kg (300 lb) IMPORTANT: When removing the brake valve (21) assembly from the motor, valve plate (12) is removed with brake valve (21) together. Do not drop valve plate (12). 1. Place the travel motor vertically. Remove socket bolts (20) (8 used). Remove brake valve (21) from housing (7). CAUTION: Housing (7) weight: 87 kg (190 lb) 8.
Place housing (7) horizontally with the brake releasing oil passage facing downward. : 17 mm IMPORTANT: As valve plate (12) is easily cracked and scratched, handle with care. 2. Remove valve plate (12) and knock pin (11) from brake valve (21). Do not remove needle bearing (10) unless necessary. Remove O-ring (22) from brake valve (21). NOTE: When facing the brake piston releasing oil passage upward, the thicker part of swash plate (18) faces upward. When placing housing (7) horizontally, swash plate (18) suddenly may come out. 9. Remove swash plate (18) from housing (7). 10. Remove balls (19) (2 used), piston (9) and spring (8) from housing (7) by using a magnet. 11.
Remove retaining ring (2) from housing (7). 12. Attach a bar onto the bottom side on inner spline hole of shaft (1). Lightly tap by using a plastic hammer and remove shaft (1) attached with roller bearing (3) from housing (7). NOTE: When removing needle bearing (10), use a small puller. As the outer race is deformed, needle bearing (10) cannot be reused. 3. Wind vinyl tape onto the rotating surface of needle bearing (10) on shaft (1) in order to protect the surface. 4. Remove O-rings (6) (2 used) and disc spring (23) from housing (7). CAUTION:
When removing brake piston (25) by applying the compressed air into housing (7), cover brake piston (25) by using a cloth in order to prevent brake piston (25) from flying out. 5. Apply 100 to 300 kPa (1 to 3 kgf/cm 2 , 14 to 43 psi) pressure air to brake releasing oil passage in housing (7). Float and remove brake piston (25). NOTE: A bicycle pump can be used. As the part is damaged, do not use a screwdriver. W3-2-19