Contents Section: Automatic Trans All sections

On-Vehicle Service & Testing: Overview Subaru Forester SF рестайлинг

Automatic Trans 37 illustrations ~1271 words

Torque Converter Clutch Specifications. Scheme 23

Scheme 23: Torque Converter Clutch Specifications

Oil Pump Specifications. Scheme 24

Scheme 24: Oil Pump Specifications

Transmission Control Element Specifications. Scheme 25

Scheme 25: Transmission Control Element Specifications

Transmission Gear Ratio Specifications. Scheme 26

Scheme 26: Transmission Gear Ratio Specifications

Planetary Gear & Plate Specifications. Scheme 27

Scheme 27: Planetary Gear & Plate Specifications

Selector Position Specifications. Scheme 28

Scheme 28: Selector Position Specifications

Hydraulic Control & Lubrication Specifications. Scheme 29

Scheme 29: Hydraulic Control & Lubrication Specifications

Cooling And Harness Specifications. Scheme 30

Scheme 30: Cooling And Harness Specifications

Transfer Clutch Specifications. Scheme 31

Scheme 31: Transfer Clutch Specifications

Final Gear Reduction Specifications & Lubrication Chart. Scheme 32

Scheme 32: Final Gear Reduction Specifications & Lubrication Chart

Identifying Adjustable Transmission Parts (1 Of 3). Scheme 33

Scheme 33: Identifying Adjustable Transmission Parts (1 Of 3)

Identifying Adjustable Transmission Parts (2 Of 3). Scheme 34

Scheme 34: Identifying Adjustable Transmission Parts (2 Of 3)

Identifying Adjustable Transmission Parts (3 Of 3). Scheme 35

Scheme 35: Identifying Adjustable Transmission Parts (3 Of 3)

Location & Installing Direction Of Thrust Needle Bearing & Specifications Chart. Scheme 36

Scheme 36: Location & Installing Direction Of Thrust Needle Bearing & Specifications Chart

Transmission Case (Front Side) Fluid Passages. Scheme 37

Scheme 37: Transmission Case (Front Side) Fluid Passages

Transmission Case (LH Side) Fluid Passages. Scheme 38

Scheme 38: Transmission Case (LH Side) Fluid Passages

Transmission Case (Rear Side) Fluid Passages. Scheme 39

Scheme 39: Transmission Case (Rear Side) Fluid Passages

Oil Pump Cover Fluid Passages. Scheme 40

Scheme 40: Oil Pump Cover Fluid Passages

Oil Pump Housing Fluid Passages. Scheme 41

Scheme 41: Oil Pump Housing Fluid Passages

Transmission Case Fluid Passages. Scheme 42

Scheme 42: Transmission Case Fluid Passages

Extension Case Fluid Passages. Scheme 43

Scheme 43: Extension Case Fluid Passages

Identifying Torque Converter Clutch & Case Components. Scheme 44

Scheme 44: Identifying Torque Converter Clutch & Case Components

Tightening torque: N.m (kg-m, ft-lb)

T1: 18+/-5 (1.8+/-0.5, 13.0+/-3.6)

T2: 41+/-3 (4.2+/-0.3, 30.4+/-2.2)

T3: 44+/-3 (4.5+/-0.3, 32.5+/-2.2)

Identifying Oil Pump Components. Scheme 45

Scheme 45: Identifying Oil Pump Components

Tightening torque: N.m (kg-m, ft-lb)

T1: 7+/-1 (0.7+/-0.1, 5.1+/-0.7)

T2: 13+/-1 (1.3+/-0.1, 9.4+/-0.7

T3: 18+/-5 (1.8+/-0.5, 13.0+/-3.6)

T4: 25+/-2 (2.5+/-0.2, 18.1+/-1.4)

T5: 39+/-3 (4.0+/-0.3, 28.9+/-2.2)

T6: 41+/-3 (4.2+/-0.3, 30.4+/-2.2)

T7: 121+/-5 (12.3+/-0.5, 89.0+/-3.6)

Identifying Transmission Case & Control Device Components. Scheme 46

Scheme 46: Identifying Transmission Case & Control Device Components

Tightening torque: N.m (kg-m, ft-lb)

T1: 3.4+/-0.5 (0.35+/-0.05, 2.5+/-0.4)

T2: 4.9+/-0.5 (0.50+/-0.05, 3.6+/-0.4)

T3: 6+/-1 (0.6+/-0.1, 4.3+/-0.7)

T4: 8+/-1 (0.8+/-0.1, 5.8+/-0.7)

T5: 13+/-1 (1.3+/-0.1, 9.4+/-0.7)

T6: 13.7+/-2.0 (1.4+/-0.2, 10.1+/-1.4)

T7: 18+/-3 (1.8+/-0.3, 13.0+/-2.2)

T8: 25+/-2 (2.5+/-0.2, 18.1+/-1.4)

T9: 33+/-10 (3.3+/-1.0, 24+/-7)

T10: 24.5+/-2.9 (2.5+/-0.3, 18.1+/-2.2)

T11: 44+/-4 (4.5+/-0.4, 32.5+/-2.9)

Identifying Control Valve & Harness Routing Components. Scheme 47

Scheme 47: Identifying Control Valve & Harness Routing Components

Tightening torque: N.m (kg-m, ft-lb)

T1: 7+/-1 (0.7+/-0.1, 5.1+/-0.7)

T2: 8+/-1 (0.8+/-0.1, 5.8+/-0.7)

Identifying High Clutch & Reverse Clutch Components. Scheme 48

Scheme 48: Identifying High Clutch & Reverse Clutch Components

Identifying Planetary Gear & 2-4 Brake Components. Scheme 49

Scheme 49: Identifying Planetary Gear & 2-4 Brake Components

Identifying Low Clutch And Low & Reverse Brake Components. Scheme 50

Scheme 50: Identifying Low Clutch And Low & Reverse Brake Components

Tightening torque: N.m (kg-m, ft-lb)

T: 25+/-2 (2.5+/-0.2, 18.1+/-1.4)

Identifying Reduction Gear Components. Scheme 51

Scheme 51: Identifying Reduction Gear Components

Tightening torque: N.m (kg-m, ft-lb)

T: 100+/-5 (10.2+/-0.5, 73.8+/-3.6)

Identifying Differential Case Components. Scheme 52

Scheme 52: Identifying Differential Case Components

Tightening torque: N.m (kg-m, ft-lb)

T1: 25+/-2 (2.5+/-0.2, 18.1+/-1.4)

T2: 62+/-5 (6.3+/-0.5, 45.6+/-3.6)

Identifying Transfer & Extension Case Components. Scheme 53

Scheme 53: Identifying Transfer & Extension Case Components

Tightening torque: N.m (kg-m, ft-lb)

T1: 13+/-1 (1.3+/-0.1, 9.4+/-0.7)

T2: 25+/-2 (2.5+/-0.2, 18.1+/-1.4)

Engine Brake Operation

Engine brake operation

D range --> 4th gear

3 range --> 3rd gear

2 range --> 2nd gear

1 range --> 1st gear

General Information

The stall test is of extreme importance in diagnosing the condition of the automatic transmission and the engine. It should be conducted to measure the engine stall speeds in R and 2 ranges.

Purposes of the stall test

  1. To check the operation of the automatic transmission clutch.
  2. To check the operation of the torque converter clutch.
  3. To check engine performance.

Scheme 54

Scheme 54: Test Methods
  1. Preparations before test: Check that throttle valve opens fully. Check that engine oil level is correct. Check that coolant level is correct. Check that ATF level is correct. Check that differential gear oil level is correct. Increase ATF temperature to 50 to 80°C (122 to 176°F) by idling the engine for approximately 30 minutes (with select lever set to "N" or "P").
  2. Install an engine tachometer at a location visible from the driver's compartment and mark the stall speed range on the tachometer scale.
  3. Place the wheel chocks at the front and rear of all wheels and engage the parking brake.
  4. Move the manual linkage to ensure it operates properly, and shift the select lever to the 2 range.
  5. While forcibly depressing the foot brake pedal, gradually depress the accelerator pedal until the engine operates at full throttle. (Scheme 54): Identifying Action Taken For Stall Test
  6. When the engine speed is stabilized, read that speed quickly and release the accelerator pedal.
  7. Shift the select lever to Neutral, and cool down the engine by idling it for more than one minute.
  8. Record the stall speed.
  9. If stall speed in 2 range is higher than specifications, low clutch slipping and 2-4 brake slipping may occur. To identify it, conduct the same test as above in D range.
  10. Perform the stall tests with the select lever in the R range.

Note. Do not continue the stall test for MORE THAN FIVE SECONDS at a time (from closed throttle, fully open throttle to stall speed reading). Failure to follow this instruction causes the engine oil and ATF to deteriorate and the clutch and brake to be adversely affected. Be sure to cool down the engine for at least one minute after each stall test with the select lever set in the P or N range and with the idle speed lower than 1,200 rpm. If the stall speed is higher than the specified range, attempt to finish the stall test in as short a time as possible, in order to prevent the automatic transmission from sustaining damage.

Stall speed (at sea level): 2,100 - 2,600 rpm

Stall Test Evaluation Chart. Scheme 55

Scheme 55: Stall Test Evaluation Chart

If the shift lever is shifted while the engine is idling, there will be a certain time elapse or lag before the shock can be felt. This is used for checking the condition of the low clutch, reverse clutch, low & reverse brake and one-way clutch.

CAUTIONPerform the test at normal operation fluid temperature 60 to 80°C (140 to 176°F). Be sure to allow a one minute interval between tests. Make three measurements and take the average value.

If the clutch or the brake shows a sign of slippage or shifting sensation is not correct, the line pressure should be checked.

  1. Excessive shocks during upshift or shifting takes place at a higher point than under normal circumstances, may be due to the line pressure being too high.
  2. Slippage or inability to operate the vehicle may, in most cases, be due to loss of oil pressure for the operation of the clutch, brake or control valve.
  1. Line pressure measurement (under no load) CAUTION: Before measuring line pressure, jack-up all wheels. Maintain temperature of ATF at approximately 50°C (122°F) during measurement. (ATF will reach the above temperature after idling the engine for approximately 30 minutes with select lever in "N" or "P".)
  2. Line pressure measurement (under heavy load). CAUTION: Before measuring line pressure, apply both foot and parking brakes with all wheels chocked (Same as for "stall" test conditions). Measure line pressure when select lever is in "R", "2" with engine under stall conditions. Measure line pressure within 5 seconds after shifting the select lever to each position. (If line pressure needs to be measured again, allow the engine to idle and then stop. Wait for at least one minute before measurement). Maintain the temperature of ATF at approximately 50°C (122°F) during measurement. (ATF will reach the above temperature after idling the engine for approximately 30 minutes with the select lever in "N" or "P").

Scheme 56

Scheme 56: Test Methods

Scheme 57

Scheme 57

Scheme 58

Scheme 58
  1. Temporarily attach the ST to a suitable place in the driver's compartment, remove the blind plug located in front of the toe board and pass the hose of the ST to the engine compartment. ST 498575400 OIL PRESSURE GAUGE ASSEMBLY (Scheme 56): Routing Pressure Gauge Into Driver's Compartment
  2. Remove the test plug and install ST instead. ST 498897200 OIL PRESSURE GAUGE ADAPTER (Scheme 57): Identifying Pressure Gauge Test Plug For Line Pressure At Transmission
  3. Connect ST1 with ST2. ST1 498897200 OIL PRESSURE GAUGE ADAPTER ST2 498575400 OIL PRESSURE GAUGE ASSEMBLY
  4. Check for duty ratio changes by opening and closing throttle valve using Subaru Select Monitor. Insert the cartridge to Subaru Select Monitor. (Scheme 58): Identifying Subaru Select Monitor Connect Subaru Select Monitor to data link connector.
  5. Check line pressure in accordance with the following chart.

Line Pressure Specification Chart. Scheme 59

Scheme 59: Line Pressure Specification Chart