Mazda CX-5 Service & Repair Manual: Planetary Gear [Fw6 A EL, Fw6 Ax EL]
Purpose/Function
-
The planetary gear is a mechanism which shifts the drive force from the engine. The planetary gear consists of multiple gears which rotate individually while revolving. By controlling the individual rotation and revolving of the gears, the transaxle performs gear shifting at the optimum gear speed according to the driving conditions.
Construction
-
The planetary gear is positioned in the order of the front planetary gear, rear planetary gear, and reduction planetary gear from the torque converter side. The planetary gear is a single planetary gear type. For the component parts of each planetary gear, refer to the following figure.
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The planetary gear is composed of the sun gear, pinion gear, planetary carrier, and internal gear as shown in the figure.
-
There are two types of pinion gear rotation, rotation (rotation) on an axis of the center for each pinion gear and rotation (revolution) on an axis of center for the planetary carrier. The planetary gear operates shifting function by switching the input, fixed, or output of the internal gear, pinion gear, and planetary carrier.
-
The relation of rotation speed of each element for the planetary gear set is generally indicated as follows:
(ZR + ZS) NC = ZR NR + ZS NS: (1)
-
Z: Number of teeth
-
N: Rotation speed
-
Additional character R: Internal gear
-
Additional character S: Sun gear
-
Additional character C: Planetary carrier (pinion gear)
-
Meaning of symbols
|
Planetary gear unit |
Number of teeth |
Symbols |
|
|
Front |
Internal gear |
97 |
ZRFr |
|
Planetary carrier (part of pinion gear) |
29 |
ZCFr |
|
|
Sun gear |
38 |
ZSFr |
|
|
Rear |
Internal gear |
95 |
ZRRr |
|
Planetary carrier (part of pinion gear) |
27 |
ZCRr |
|
|
Sun gear |
40 |
ZSRr |
|
|
Reduction |
Internal gear |
109 |
ZRRed |
|
Planetary carrier (part of pinion gear) |
21 |
ZCRed |
|
|
Sun gear |
68 |
ZSRed |
|
Meaning of symbols
Operation
1GR
Rotation speed for each gear
|
Planetary gear unit |
Front planetary gear |
|
Internal gear |
0 (Fix) |
|
Planetary carrier (part of pinion gear) |
NCFr (Output) |
|
Sun gear |
NSFr (Input) |
2GR
Rotation speed for each gear
|
Planetary gear unit |
Front planetary gear |
Rear planetary gear |
|
Internal gear |
NRFr=NC |
0 (Fix) |
|
Planetary carrier (part of pinion gear) |
NCFr (Output) |
NCRr=Nc |
|
Sun gear |
NSFr (Input)=NS |
NSRr=NS |
3GR
Rotation speed for each gear
|
Planetary gear unit |
Front planetary gear |
Rear planetary gear |
Reduction |
|
Internal gear |
NRFr=NC1 |
NRRr=Nc2 |
0 (Fix) |
|
Planetary carrier (part of pinion gear) |
NCFr (Output) |
NCRr=Nc1 |
NCRed=Nc2 |
|
Sun gear |
NSFr (Input)=NS |
NSRr=NS |
NSRed=NS |
4GR
Rotation speed for each gear
|
Planetary gear unit |
Front planetary gear |
|
Internal gear |
NRFr (Input) |
|
Planetary carrier (part of pinion gear) |
NCFr (Output) |
|
Sun gear |
NSFr (Input) |
5GR
Rotation speed for each gear
|
Planetary gear unit |
Front planetary gear |
Rear planetary gear |
Reduction |
|
Internal gear |
NRFr=NC1 |
NRRr=Nc2 |
0 (Fix) |
|
Planetary carrier (part of pinion gear) |
NCFr (Output) |
NCRr (Input)=Nc1 |
NCRed=Nc2 |
|
Sun gear |
NSFr=NS |
NSRr=NS |
NSRed=Nc1 |
6GR
Rotation speed for each gear
|
Planetary gear unit |
Front planetary gear |
Rear planetary gear |
|
Internal gear |
NRFr=NC |
0 (Fix) |
|
Planetary carrier (part of pinion gear) |
NCFr (Output) |
NCRr (Input)=Nc |
|
Sun gear |
NSFr=NS |
NSRr=NS |
Reverse
Rotation speed for each gear
|
Planetary gear unit |
Front planetary gear |
Rear planetary gear |
Reduction |
|
Internal gear |
NRFr (Fix) |
NRRr=Nc |
0 (Fix) |
|
Planetary carrier (part of pinion gear) |
NCFr (Output) |
NCRr (Fix) |
NCRed=Nc |
|
Sun gear |
NSFr=NS |
NSRr=NS |
NSRed (Input) |
Pilot Bearing Inspection [C66 M R]
1. Without removing the pilot bearing, turn the bearing while applying force
in the axial direction.
If there is any malfunction, replace the pilot bearing..
...
Power Flow [Fw6 A EL, Fw6 Ax EL]
Power flow
1 GR
2 GR
3 GR
4 GR
5 GR
6 GR
REVERSE
...
Other materials:
Steering Shaft Inspection
1. Inspect the steering column for excessive play and damage.
2. Verify that the clearance between the projection on the steering column shown
in the figure and the bracket is less than 2.0 mm {0.079 in}.
If the clearance between the projection and bracket is 2.0 mm {0.079 in}
or ...
Engine Coolant
Inspecting Coolant Level
WARNING
Do not use a match or live flame in the engine compartment. DO NOT ADD COOLANT
WHEN THE ENGINE IS HOT:
A hot engine is dangerous. If the engine has been running, parts of the engine
compartment can become very hot. You could be burned.
Carefully inspect the e ...
License Plate Light Bulb Removal/Installation
1. Disconnect the negative battery cable..
2. Insert a tape-wrapped flathead screwdriver into the clearance between the
lens and license plate light shown in the figure.
3. Move the flathead screwdriver in the direction of the arrow shown in the figure,
pull out the lens from the license ...
