AC60E AUTOMATIC TRANSMISSION / TRANSAXLE  AUTOMATIC TRANSMISSION SYSTEM(for 7GR-FKS)  HYDRAULIC TEST  

PERFORM HYDRAULIC TEST

CAUTION:

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Do not perform a stall test if there are any people or objects near the vehicle.

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The vehicle could begin moving suddenly, resulting in a serious accident.

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Do not perform a stall test if any wheel chocks are out of position.

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The vehicle could begin moving suddenly, resulting in a serious accident.

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Do not perform the stall test on a slippery or low-friction surface that could allow the tires to spin.

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The vehicle could begin moving suddenly, resulting in a serious accident.

NOTICE:

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Perform the test while the ATF (Automatic Transmission Fluid) temperature is between 50 and 80°C (122 and 176°F).

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Be careful to prevent the hose of SST from interfering with the exhaust pipe.

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This check must be conducted after checking and adjusting the engine.

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Perform the test with the air conditioning off.

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When conducting stall test, do not continue for more than 5 seconds.

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When performing the stall speed test more than once, make sure to wait 15 seconds or more between tests.

a.

0.688,0.406 1.104,0.292 false 1.177,0.208 1.635,0.406 0.458,0.198 10 false SST 1.677,0.531 2.135,0.729 0.458,0.198 10 false SST

Measure the line pressure.

i.

Warm up the ATF (Automatic Transmission Fluid).

ii.

Turn the ignition switch off.

iii.

Lift the vehicle up.

iv.

Remove the test plug from the transmission case and connect SST.

SST

09993-19015  (09993-00010, 09993-00040)

v.

Lower the vehicle.

vi.

Fully apply the parking brake and chock the 4 wheels.

vii.

Start the engine and check the idling speed.

viii.

Keep your left foot pressed firmly on the brake pedal and move the shift lever to D.

ix.

Fully depress the accelerator pedal with your right foot. Quickly read the highest line pressure when the engine speed reaches the stall speed.

x.

In the same manner, perform the test with the shift lever in R.

Specified Line Pressure

Condition	D Position	R Position
Stall speed	1550 to 1740 kPa (15.8 to 17.8 kgf/cm2, 225 to 252 psi)	1650 to 1840 kPa (16.8 to 18.8 kgf/cm2, 239 to 267 psi)

Evaluation

Problem	Possible Cause
Measured values are higher than the specified value in all positions	· Shift solenoid valve SLT defective · Regulator valve defective
Measured values are lower than the specified value in all positions	· Shift solenoid valve SLT defective · Regulator valve defective · Oil pump defective
Pressure is low in D position only	· D position circuit fluid leak · No. 1 clutch (C1) defective
Pressure is low in R position only	· R position circuit fluid leak · No. 2 brake (B2) defective · No. 3 brake (B3) defective