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| Illustration 1 | g00806195 |
Inside of Roller Frame (1) Travel drive (2) Pilot lines for travel parking brakes (3) Travel parking brake (4) Line for the case drain | |
The final drive consists of the travel drive (1) and the travel parking brake (3).
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| Illustration 2 | g00533321 |
Final Drive (5) Outer Duo-Cone seals (6) Cover and mount (7) Planetary gears (first stage) (8) Carrier (first stage) (9) Planetary gears (second stage) (10) Carrier (second stage) (11) Retaining ring (12) Friction plates for the travel parking brake (13) Travel parking brake (14) Travel parking brake release port (15) Piston for the travel parking brake (16) Travel motor input shaft and gear (17) Springs for the travel parking brake (18) Drive gear (19) Travel drive sun gear and shaft (20) Spindle (21) Cover (22) Spacer disc (23) Outer travel mount bearing (24) Outer mounting ring (25) Travel drive gear (housing) (26) Sun gear (second stage) (27) Spindle nut (28) Hub bearing (29) Travel drive hub and sprocket housing (30) Inner Duo-Cone seals | |
Travel Drive
The travel drive reduces the rotating speed of the travel motor. The output shaft of the travel motor is splined to the travel motor input shaft (16) of the travel drive.
The travel drive consists of the following two groups:
- Two-stage planetary gear reduction
The first stage contains the following components: travel drive sun gear and shaft (19), first stage planetary gears (7), first stage carrier (8) and travel drive gear (25) .
The second stage contains the following components: second stage sun gear (26), second stage planetary gear (9), second stage carrier (10) and travel drive gear (25) .
- Output group
The rotation of travel drive hub and sprocket housing (29) generates output torque that drives the track. The housing (29), travel drive gear (25) and cover (6) are held together with bolts. This assembly is supported with bearings (28) and turns with travel drive gear (25) .
The planet reduction gears reduce the travel speed. The speed is reduced in a ratio of sun gear tooth numbers to ring gear tooth numbers.
Note: Refer to the Hydraulic System System Operation, "Planetary Gear Operation (Final Drive)" for information on the operation of the planetary gear.