Nissan Frontier D22. Manual — part 14
OVERALL SYSTEM
AT-25
[RL4R01A]
D
E
F
G
H
I
J
K
L
M
A
B
AT
Overrun clutch reducing valve
Controls pressure that operates the overrun clutch to relief shocks caused during
engine braking.
Line pressure acts on the overrun clutch reducing valve in the 1st or 2nd position to
increase the pressure-regulating point with resultant high engine braking capabilities.
4th speed cut valve
Determines lock-up speed while operating in 4th gear.
●
Torque converter clutch control valve
●
Torque converter clutch solenoid valve
Activates or deactivates lock-up system.
Torque converter relief valve
Prevents abnormal increase of converter oil pressure.
Valve Name
Function
AT-26
[RL4R01A]
TROUBLE DIAGNOSIS — BASIC INSPECTION
TROUBLE DIAGNOSIS — BASIC INSPECTION
PFP:00000
A/T Fluid Check
ECS007IR
FLUID LEAKAGE CHECK
1.
Clean area suspected of leaking, — for example, mating surface
of converter housing and transmission case.
2.
Start engine, apply foot brake, place selector lever in D position
and wait a few minutes.
3.
Stop engine.
4.
Check for fresh leakage.
FLUID CONDITION CHECK
FLUID LEVEL CHECK
Stall Test
ECS007IS
STALL TEST PROCEDURE
1.
Check A/T fluid and engine oil levels. If necessary, add fluid and
oil.
2.
Drive vehicle for approx. 10 minutes or until fluid and oil reach
operating temperature.
3.
Set parking brake and block wheels.
4.
Install a tachometer where it can be seen by driver during test.
●
It is good practice to put a mark on point of specified
engine speed on indicator.
SAT288G
Fluid color
Suspected problem
Dark or black with burned odor
Wear of frictional material
Milky pink
Water contamination
●
Road water entering through filler
tube or breather
Varnished fluid, light to dark brown and
tacky
Oxidation
●
Over or under filling
●
Overheating
SAT638A
ATF operating temperature
: 50 - 80
°C (122 - 176°F)
SAT647B
SAT513G
TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-27
[RL4R01A]
D
E
F
G
H
I
J
K
L
M
A
B
AT
5.
Start engine, apply foot brake, and place selector lever in D
position.
6.
Accelerate to wide open throttle gradually while applying foot
brake.
●
During test, never hold throttle wide open for more than 5
seconds.
7.
Quickly note the engine stall revolution and immediately release
throttle.
8.
Shift selector lever to N position.
9.
Cool off ATF.
●
Run engine at idle for at least one minute.
10. Repeat steps 5 through 9 with selector lever in 2, 1 and R posi-
tions.
Stall revolution standard
: 2,100 - 2,300 rpm
SAT514G
SAT414F
AT-28
[RL4R01A]
TROUBLE DIAGNOSIS — BASIC INSPECTION
JUDGEMENT OF STALL TEST
LCIA0280E
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст