Infiniti I30 (A33). Manual — part 16
SAT767B
A/T Fluid Check
NHAT0026
FLUID LEAKAGE CHECK
NHAT0026S01
1.
Clean area suspected of leaking. — for example, mating sur-
face of converter housing and transmission case.
2.
Start engine, apply foot brake, place selector lever in D posi-
tion and wait a few minutes.
3.
Stop engine.
SAT288G
4.
Check for fresh leakage.
SAT638A
FLUID CONDITION CHECK
NHAT0026S02
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
FLUID LEVEL CHECK
NHAT0026S03
Refer to MA-21, “Checking A/T Fluid”.
SAT647B
Stall Test
NHAT0027
STALL TEST PROCEDURE
NHAT0027S01
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.
ATF operating temperature:
50 - 80°C (122 - 176°F)
GI
MA
EM
LC
EC
FE
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS — BASIC INSPECTION
A/T Fluid Check
AT-61
SAT513G
3.
Set parking brake and block wheels.
4.
Install a tachometer where it can be seen by driver during test.
I
It is good practice to mark the point of specified engine
rpm on indicator.
SAT514G
5.
Start engine, apply foot brake, and place selector lever in D
position.
6.
Accelerate to wide open throttle gradually while applying foot
brake.
7.
Quickly note the engine stall revolution and immediately
release throttle.
I
During test, never hold throttle wide open for more than 5
seconds.
Stall revolution:
2,150 - 2,450 rpm
SAT771B
8.
Move selector lever to N position.
9.
Cool off ATF.
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Run engine at idle for at least one minute.
10. Repeat steps 5 through 9 with selector lever in 2, 1 and R
positions.
JUDGEMENT OF STALL TEST
NHAT0027S02
The test result and possible damaged components relating to each
result are shown in the illustrations on next page.
In order to pinpoint the possible damaged components, follow the
“WORK FLOW CHART”shown in AT-60.
NOTE:
Stall revolution is too high in D, 2 or 1 position:
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Slippage occurs in 1st gear but not in 2nd and 3rd gears. . .
Low one-way clutch slippage
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Slippage occurs in the following gears:
1st through 3rd gears in D position and engine brake functions
with overdrive control switch set to OFF.
1st and 2nd gears in 2 position and engine brake functions with
accelerator pedal released (fully closed throttle). . . Forward
clutch or forward one-way clutch slippage
Stall revolution is too high in R position:
I
Engine brake does not function in 1 position. . . Low & reverse
brake slippage
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Engine brake functions in 1 position. . . Reverse clutch slip-
page
Stall revolution within specifications:
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Vehicle does not achieve speed of more than 80 km/h (50
TROUBLE DIAGNOSIS — BASIC INSPECTION
Stall Test (Cont’d)
AT-62
MPH). . . One-way clutch seizure in torque converter housing
CAUTION:
Be careful since automatic fluid temperature increases abnor-
mally.
I
Slippage occurs in 3rd and 4th gears in D position. . . High
clutch slippage
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Slippage occurs in 2nd and 4th gear in D position. . . Brake
band slippage
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Engine brake does not function in 2nd and 3rd gears in D
position, 2nd gear in 2 position, and 1st gear in 1 position with
overdrive control switch set to OFF.
Stall revolution less than specifications:
I
Poor acceleration during starts. . . One-way clutch seizure in
torque converter
GI
MA
EM
LC
EC
FE
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS — BASIC INSPECTION
Stall Test (Cont’d)
AT-63
SAT600J
TROUBLE DIAGNOSIS — BASIC INSPECTION
Stall Test (Cont’d)
AT-64
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