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.
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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:
Sae Standards
In accordance with new regulations, SAE (Society of Automotive Engineers)
standard names and abbreviations are now used in this manual. The table below
lists the names and abbreviations that have been used in Mazda manuals up to
now and their SAE equivalents.
...
Clock Spring Inspection [Standard Deployment Control System]
1. Disconnect the negative battery cable and wait for 1 min or more..
2. Remove the driver?side air bag module..
3. Remove the steering wheel..
4. Remove the column cover..
5. Remove the clock spring..
6. Verify that the continuity is as indicated in the table.
If not as indicated ...
Engine Tune Up
Engine Tune-up Preparation
NOTE:
If the accelerator pedal is depressed continuously for a specified time,
the engine speed may decrease to the idle speed. This is due to the fuel cut
control operation, which prevents overheating, and it does not indicate a malfunction.
The engine s ...
