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3-19
3
TRAVEL MOTOR
FUNCTION
3MAA04Z
1
2
3
4
5
6
Parking brake
The friction disc (2) and the disc (1) are connected through
the spline. The friction disc (2) and the disc (1) are pressed
against the flange holder (6) by the springs (4) via the brake
piston (5). The friction force between these discs gener-
ates the brake torque to prevent the cylinder block (3) from
rotating.
When the pressure oil is dorected into the motor, the oil
flows from the parking brake release port (7) into the brake
piston chamber (8). The oil pressure overpowers the spring
force and moves the brake piston (5) to the right. This gen-
erates a clearance between the friction disc (2) and the disc
(1) to release the parking brake function. Once the motor
stops, no pressure oil flows into the parking brake release
port (7) and the parking brake force is operated by the
spring (4).
Reduction gears
The reduction gears consist of 2-stage simple planetary
gears connected in series. Each planetary gear consists
of a sun (input) gear, an internal tooth ring gear and planet
gears mounted on a carrier. The sun gear “floats” within the
planet gears so as to attain uniform load distribution at the
multiple gear mesh points.
The motor drives the 1st stage sun gear (1) which in turn
drives the 1st planet gears (2). Since these planet gears (2)
are engaged with the ring gear (3), the rotation is transmit-
ted to the 1st stage carrier (4).
The 1st stage carrier (4) is coupled directly to the 2nd stage
sun gear (5) which in turn drives the 2nd planet gears (6).
The 2nd stage carrier (7) is a part of the motor housing
(non-rotating) and thus the main torque is output to the ring
gear (3). The output flange rotation is opposite to the input
rotation.
3MAA05Z
1
2
4
5
7
8
3MAA08Z
1
4
6
7
2
3
5
Summary of Contents for TB 250
Page 1: ......
Page 3: ...1 1 SAFETY 1 Safety alert symbol 1 2 Safety precautions 1 3 Cautions when working 1 9...
Page 36: ...2 24 2 TIGHTENING TORQUE SERVICE DATA...
Page 38: ...2 26 2 HYDRAULIC CIRCUIT DIAGRAM SERVICE DATA Equipped with options 2 2...
Page 39: ...2 27 2 HYDRAULIC CIRCUIT DIAGRAM SERVICE DATA Equipped with angle blade and blade oat 1 2...
Page 40: ...2 28 2 HYDRAULIC CIRCUIT DIAGRAM SERVICE DATA Equipped with angle blade and blade oat 2 2...
Page 41: ...2 29 2 HYDRAULIC CIRCUIT DIAGRAM SERVICE DATA Equipped with high ow option 1 2...
Page 42: ...2 30 2 HYDRAULIC CIRCUIT DIAGRAM SERVICE DATA Equipped with high ow option 2 2...
Page 49: ......
Page 59: ...2 46 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 60: ...2 47 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 61: ...2 48 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 62: ...2 49 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 63: ...2 50 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 64: ...2 51 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 65: ...2 52 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 66: ...2 53 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 67: ...2 54 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 68: ...2 55 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 69: ...2 56 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 70: ...2 57 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 71: ...2 58 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 72: ...2 59 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 73: ...2 60 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA NAME STANDARD NO...
Page 74: ...2 61 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 75: ...2 62 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 76: ...2 63 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 77: ...2 64 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 78: ...2 65 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 79: ...2 66 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 80: ...2 67 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 81: ...2 68 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 92: ...3 11 3 CONTROL VALVE FUNCTION...
Page 108: ...4 3 4 SERVICE STANDARDS DISASSEMBLY AND ASSEMBLY Clearance for pin and bushing...
Page 352: ...ENGINE 6 Machine model Mounted engine TB250 4TNV88...