Infiniti I30 (A33). Manual — part 5
Cross-sectional View
NHAT0011
SAT577J
1.
Band servo piston
2.
Reverse clutch drum
3.
Converter housing
4.
Oil pump
5.
Brake band
6.
Reverse clutch
7.
High clutch
8.
Front planetary gear
9.
Low one-way clutch
10. Rear planetary gear
11. Forward clutch
12. Overrun clutch
13. Low & reverse brake
14. Output gear
15. Idler gear
16. Forward one-way clutch
17. Pinion reduction gear
18. Final gear
19. Differential case
20. Input shaft
21. Torque converter
GI
MA
EM
LC
EC
FE
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
OVERALL SYSTEM
Cross-sectional View
AT-17
Hydraulic Control Circuit
NHAT0012
SAT578J
OVERALL SYSTEM
Hydraulic Control Circuit
AT-18
Shift Mechanism
NHAT0013
CONSTRUCTION
NHAT0013S01
SAT998I
1.
Torque converter
2.
Oil pump
3.
Input shaft
4.
Brake band
5.
Reverse clutch
6.
High clutch
7.
Front sun gear
8.
Front pinion gear
9.
Front internal gear
10. Front planetary carrier
11. Rear sun gear
12. Rear pinion gear
13. Rear internal gear
14. Rear planetary carrier
15. Forward clutch
16. Forward one-way clutch
17. Overrun clutch
18. Low one-way clutch
19. Low & reverse brake
20. Parking pawl
21. Parking gear
22. Output shaft
23. Idle gear
24. Output gear
FUNCTION OF CLUTCH AND BRAKE
NHAT0013S02
Clutch and brake components
Abbr.
Function
Reverse clutch 5
R/C
To transmit input power to front sun gear 7.
High clutch 6
H/C
To transmit input power to front planetary carrier 10.
Forward clutch 15
F/C
To connect front planetary carrier 10 with forward one-way
clutch 16.
Overrun clutch 17
O/C
To connect front planetary carrier 10 with rear internal gear 13.
Brake band 4
B/B
To lock front sun gear 7.
Forward one-way clutch 16
F/O.C
When forward clutch 15 is engaged, to stop rear internal gear
13 from rotating in opposite direction against engine revolution.
Low one-way clutch 18
L/O.C
To stop front planetary carrier 10 from rotating in opposite direc-
tion against engine revolution.
Low & reverse brake 19
L & R/B
To lock front planetary carrier 10.
GI
MA
EM
LC
EC
FE
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
OVERALL SYSTEM
Shift Mechanism
AT-19
CLUTCH AND BAND CHART
NHAT0013S03
Shift posi-
tion
Reverse
clutch
5
High
clutch
6
For-
ward
clutch
15
Over-
run
clutch
17
Band servo
For-
ward
one-
way
clutch
16
Low
one-
way
clutch
18
Low &
reverse
brake
19
Lock-up
Remarks
2nd
apply
3rd
release
4th
apply
P
PARK POSI-
TION
R
q
q
REVERSE
POSITION
N
NEUTRAL
POSITION
D*4
1st
q
*1D
B
B
Automatic
shift
1
k
2
k
3
k
4
2nd
q
*1 A
q
B
3rd
q
q
*1 A
*2C
C
B
*5
q
4th
q
C
*3C
C
q
q
2
1st
q
D
B
B
Automatic
shift
1
k
2
g
3
2nd
q
A
q
B
1
1st
q
q
B
q
Locks (held
stationary) in
1st speed
1
g
2
g
3
2nd
q
q
q
B
*1: Operates when overdrive control switch is set in OFF position.
*2: Oil pressure is applied to both 2nd “apply” side and 3rd “release” side of band servo piston. However, brake band does not contract
because oil pressure area on the “release” side is greater than that on the “apply” side.
*3: Oil pressure is applied to 4th “apply” side in condition *2 above, and brake band contracts.
*4: A/T will not shift to 4th when overdrive control switch is set in OFF position.
*5: Operates when overdrive control switch is OFF.
q
: Operates
A: Operates when throttle opening is less than 3/16, activating engine brake.
B: Operates during “progressive” acceleration.
C: Operates but does not affect power transmission.
D: Operates when throttle opening is less than 3/16, but does not affect engine brake.
OVERALL SYSTEM
Shift Mechanism (Cont’d)
AT-20
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