GEARTRAIN-PLANETARY
DESCRIPTION
Three planetary gear sets are used to produce the different gear ratios. These are located in the mechanical part of the transmission as the front, middle and rear planetary gear sets.
OPERATION
The annulus gear (1) and sun gear (3) elements of a planetary gear system are alternately driven and braked by the actuating elements of the multi-plate clutch and multiple-disc brake. The planetary pinion gears (2) can turn on the internal gearing of the annulus gear (1) and on the external gearing of the sun gear (3). This allows for a variety of gear ratios and the reversal of the rotation direction without the need for moving gear wheels or shift collars. When two components of the planetary gear set are locked together, the planetary gear set is locked and turns as a closed unit.
The torque and engine speed are converted according to the lever ratios and the ratio of the number of teeth on the driven gears to that on the drive gears, and is referred to as the gear ratio. The overall ratio of a number of planetary gear sets connected in series is obtained by multiplying the partial ratios.
DISASSEMBLY
| Output Shaft with Center and Rear Planetary Geartrain |
| 1 - TEFLON RINGS | 7 - DRIVING CLUTCH K3 |
| 2 - OUTPUT SHAFT WITH CENTER PLANETARY CARRIER | 8 - THRUST WASHER |
| 3 - NEEDLE BEARING | 9 - AXIAL NEEDLE BEARING |
| 4 - THRUST WASHER | 10 - SHIM |
| 5 - REAR PLANETARY
GEAR SET | 11 - RETAINING RING |
| 6 - REAR HOLLOW SHAFT/FREEWHEELING CLUTCH F2 |
1. Remove upper two visible Teflon rings (1) from output shaft.
2. Remove retaining ring (11), shim (10), thrust needle bearing (9) and thrust washer (8) from output shaft.
3. Remove clutch K3 (7).
4. Remove rear tubular shaft/freewheeling clutch F2 (6) from output shaft.
5. Remove rear gear set (5) with integrated tubular shaft of center gear set from output shaft.
6. Remove thrust washer (4).
ASSEMBLY
| Output Shaft with Center and Rear Planetary Geartrain |
| 1 - TEFLON RINGS | 7 - DRIVING CLUTCH K3 |
| 2 - OUTPUT SHAFT WITH CENTER PLANETARY CARRIER | 8 - THRUST WASHER |
| 3 - NEEDLE BEARING | 9 - AXIAL NEEDLE BEARING |
| 4 - THRUST WASHER | 10 - SHIM |
| 5 - REAR PLANETARY
GEAR SET | 11 - RETAINING RING |
| 6 - REAR HOLLOW SHAFT/FREEWHEELING CLUTCH F2 |
1. Mount thrust washer (4) with the collar pointing towards the planet carrier.
2. Mount the rear gear set (5) on the rear hollow shaft (6).
3. Using grease, install lower three Teflon rings (1) in the groove so that the joint stays together
4. Put rear hollow shaft/freewheeling clutch F2 (6) with rear gear set (5) onto output shaft.
5. Install clutch K3 (7).
6. Mount retaining ring, shim, thrust needle bearing and thrust washer (8 - 11).
7. Using grease, insert the upper two Teflon rings (1) in the groove so that the joint remains together.
NOTE: During the test, apply a contact force by hand to K3 in the direction of the arrow.
8. Inspect axial play between shim (10) and retaining ring (11). Check axial play "S" between shim (10) and retaining ring (1) using a feeler gauge. Clearance should be 0.15-0.6 mm (0.006-0.024 in.). Shims are available in thicknesses of 3.0 mm (0.118 in.), 3.4 mm (0.134 in.), and 3.7 mm (0.146 in.). Adjust as necessary