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Automatic Transaxle (Cvt) (Except Wrx): Other Subaru XV GP

Automatic Trans 32 illustrations ~1858 words

OIL PUMP

TypeInternal gear pump
Driving methodDriven by chain
Number of teethInner rotor8
Outer rotor9

TRANSMISSION CONTROL ELEMENT

TypeForward continuously variable speed change, 1 reverse, planetary gear
Multi-plate clutch1 sets
Multi-plate brake1 sets

TRANSMISSION GEAR RATIO

Forward3.581 - 0.570
Rev3.667

PLATE

Number of forward clutch drive plates3
Number of reverse brake drive plates4

SELECTOR POSITION

P (Park)Transmission neutral, output shaft locked, engine start enabled
R (Reverse)Rev
N (Neutral)Transmission neutral, engine start enabled
D (Drive)Forward continuously variable speed change
M (manual mode) (paddle shift + side)Manual gear change 1st --> 2nd --> 3rd --> 4th --> 5th --> 6th
M (manual mode) (paddle shift - side)Manual gear change 1st <-- 2nd <-- 3rd <-- 4th <-- 5th <-- 6th
L (low)Forward continuously variable speed change (engine brake)

TRANSFER

Transfer typeMulti-plate transfer (MP-T)
Number of transfer clutch drives & driven plates4
Control methodElectronic hydraulic type
Reduction gear ratio1.000 (43/43)

REDUCTION GEAR RATIO

Front final reduction gear ratio3.700
Lubrication oilGL-5 (75W-85)
Front differential oil capacityL (US qt, Imp qt)1.3 - 1.4 (1.4 - 1.5, 1.1 - 1.2)

Scheme 367

Scheme 367: TORQUE CONVERTER ASSEMBLY AND CONVERTER CASE

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

T1: 18 (1.8, 13.3)

T2: 22 (2.2, 16.2)

T3: 22.5 (2.3, 16.6)

T4: 25 (2.5, 18.4)

T5: 41 (4.2, 30.2)

T6: 50 (5.1, 36.9)

T7: 70 (7.1, 51.6)

T8: < Refer to INSTALLATION , Drive Plate. >

Scheme 368

Scheme 368: OIL PUMP ASSY

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

T1: 8.5 (0.9, 6.3)

T2: 21 (2.1, 15.5)

Scheme 369

Scheme 369: TRANSMISSION CASE

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

T1: 9 (0.9, 6.6)

T2: 13 (1.3, 9.6)

T3: 17 (1.7, 12.5)

T4: 25 (2.5, 18.4)

T5: 50 (5.1, 25.8)

Scheme 370

Scheme 370: CONTROL VALVE BODY

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

T1: 5 (0.5, 3.7)

T2: 7 (0.7, 5.2)

T3: 8 (0.8, 5.9)

T4: 9 (0.9, 6.6)

T5: 31 (3.2, 22.9)

Scheme 371

Scheme 371: REVERSE BRAKE ASSEMBLY

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

T1: 16 (1.6, 11.8)

T2: 37 (3.8, 27.3)

Scheme 372

Scheme 372: FORWARD CLUTCH ASSEMBLY

Scheme 373

Scheme 373: TRANSMISSION CONTROL DEVICE

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

T1: 5 (0.5, 3.7)

T2: 7 (0.7, 5.2)

T3: 9 (0.9, 6.6)

T4: 18 (1.8, 13.3)

T5: 25 (2.5, 18.4)

Scheme 374

Scheme 374: PRIMARY PULLEY, SECONDARY PULLEY & VARIATOR CHAIN AND REDUCTION DRIVE GEAR

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

T1: 16 (1.6, 11.8)

T2: 21 (2.1, 15.5)

T3: 67.5 (6.9, 49.8)

Scheme 375

Scheme 375: FRONT DIFFERENTIAL GEAR

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

T1: 25 (2.5, 18.4)

T2: 43 (4.4, 31.7)

T3: 64 (6.5, 47.2)

T4: < Refer to ASSEMBLY , Drive Pinion Shaft Assembly. >

Scheme 376

Scheme 376: TRANSFER AND EXTENSION CASE

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

T1: 25 (2.5, 18.4)

T2: 35 (3.6, 25.8)

T3: 95 (9.7, 70.1)

Scheme 377

Scheme 377: TRANSMISSION HARNESS AND SENSOR

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

T1: 7 (0.7, 3.7)

T2: 8 (0.8, 5.9)

T3: 14 (1.4, 10.3)

T4: 39 (4.0, 28.8)

Scheme 378

Scheme 378: CVTF COOLER (WITH WARMER FEATURE)

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

T: 23 (2.3, 17.0)

Scheme 379

Scheme 379: TRANSMISSION CONTROL MODULE

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

T: 7.5 (0.8, 5.5)

Scheme 380

Scheme 380: TRANSMISSION MOUNTING

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

T1: 35 (3.6, 25.8)

T2: 40 (4.1, 29.5)

T3: 50 (5.1, 36.9)

T4: 58 (5.9, 42.8)

T5: 70 (7.1, 51.6)

CAUTION

  1. Wear appropriate work clothing, including a cap, protective goggles and protective shoes when performing any work.
  2. Remove contamination including dirt and corrosion before removal, installation or disassembly.
  3. Keep the disassembled parts in order and protect them from dust and dirt.
  4. Do not place the valve cover with its inner side facing up until it is installed, to prevent intrusion of foreign matter into the control valve body.
  5. Before removal, installation or disassembly, be sure to clarify the failure. Avoid unnecessary removal, installation, disassembly and replacement.
  6. When disassembling the case and other light alloy parts, use a plastic hammer to force it apart. Do not pry apart with screwdrivers or other tools.
  7. Vehicle components are extremely hot after driving. Be wary of receiving burns from heated parts.
  8. Use SUBARU genuine CVTF and recommended grease. Do not mix CVTF, grease etc. of different grades or manufacturers.
  9. Be sure to tighten bolts and nuts to the specified torque.
  10. Place lifts, shop jacks or rigid racks at specified locations.
  11. Apply CVTF onto sliding or revolving surfaces before installation.
  12. Replace deformed or damaged snap rings with new parts.
  13. Before installing O-rings or oil seals, apply sufficient amount of CVTF or gear oil to appropriate locations in order to avoid damage and deformation.
  14. Be careful not to incorrectly install or fail to install O-rings, snap rings and other such parts.
  15. Before securing a part on a vise, place cushioning material such as wood blocks, aluminum plate, or cloth between the part and the vise.
  16. Avoid damaging the mating surface of the case.
  17. Before applying liquid gasket, completely remove the old liquid gasket.
  18. After removing the sensors, breather hose and plugs, plug the holes to avoid foreign materials intruding as necessary.
  19. During disassembly or assembly, be sure to use nylon gloves or paper towels. Do not use cloth gloves or waste cloth.

GENERAL TOOL

TOOL NAMEREMARKS
Circuit testerUsed for measuring resistance and voltage.
Thickness gaugeUsed for measuring the clearance in reverse brake, forward clutch and transfer clutch.
CaliperUsed for measuring the dimension.
Spring scaleUsed for measuring the starting torque of the drive pinion.
TORX® bit T70Used for removing and installing differential gear oil drain plug.
STRAIGHT PIN REMOVERUsed for removing and installing the straight pin.
Push/pull gaugeUsed for measuring clutch clearance.
Angle gaugeUsed for installing the drive plate.

CONDITION CHECK

Note. When replacing CVTF, determine the condition inside the transmission body by inspecting the drained CVTF.

Fluid conditionTrouble and possible causeCorrective action
Metal particles.Excessive wear of the internal of the transmission body.Replace CVTF and check if CVT operates correctly.
Thick and varnish-form fluid.Burnt clutchesReplace CVTF and check the CVT body or vehicle for faulty.
Clouded CVTF or bubbles.Water mixed in fluid.Replace CVTF and check the water entering point.

PROCEDURE

CAUTIONDo not turn the power of the Subaru Select Monitor OFF during work, and do not disconnect the data link connector. On completing the work in FWD, switch back in AWD.
  1. Shift the select lever to "P" range.
  2. Connect the Subaru Select Monitor to data link connector.
  3. Turn the ignition switch to ON.
  4. Turn off all switches causing an electrical load, such as headlights, A/C, seat heater and rear defogger.
  5. Select {Work Support} in the «Transmission Diagnosis» display screen of the Subaru Select Monitor.
  6. Select {Maintenance mode} in the «Work Support» screen of Subaru Select Monitor.
  7. Select {AWD ON/OFF switching mode} in the «Maintenance mode» screen of the Subaru Select Monitor.
  8. Follow the messages displayed on the Subaru Select Monitor screen when working. Switching completes successfully if any of the following messages is displayed. When switching from AWD to FWD: {Switched to FF. To return to AWD, perform basic mode again.} When switching from FWD to AWD: {Switched to AWD. To return to FF, perform basic mode again.} NOTE: If communication error occurs during switching mode, start in the "AWD ON/OFF switching mode" again. If operation is interrupted before the successful end message is displayed, perform the {AWD ON/OFF switching mode} from the beginning until confirming the operation is successfully ended. If this mode fails to complete successfully, the cause is as follows. Select lever is not in "P" range. Engine is running. For detailed operation procedures, refer to "PC application help for Subaru Select Monitor".

GENERAL PRECAUTION

Road tests should be conducted to properly diagnose the condition of CVT.

CAUTIONAlways observe the local traffic laws when performing the test.

D RANGE SHIFT FUNCTION

Make sure the engine speed is 1, 100 - 1, 300 rpm while driving on the level road at 50 km/h (31 MPH) after accelerating from halting to 1/4 of accelerator opening angle. Then stop the vehicle. Check normal gear change has occurred while the vehicle speed changes from a constant speed to zero.

KICK-DOWN FUNCTION

Check if engine speed will rise by operating the accelerator opening angle to the full from a constant speed of 50 km/h (31 MPH) or more.

LOCK-UP FUNCTION

When the accelerator is lightly depressed while driving on a flat road in "D" range, check that rpm does not change abruptly.

OIL LEAKAGE

After the driving test, inspect for leakage of CVTF and differential gear oil from the transmission body.

FRONT DIFFERENTIAL SIDE

Install in the reverse order of removal.

Insertion depth A

16 - 36 mm (0.63 - 1.42 in)

Scheme 381

Scheme 381: FRONT DIFFERENTIAL SIDE

TRANSMISSION CASE SIDE

Install in the reverse order of removal.

Tightening torque

Transmission case cover

8 N.m (0.8 kgf-m, 5.9 ft-lb)

PLANETARY CARRIER ASSY

Note. Disassemble the balance oil guide only.

Scheme 382

Scheme 382: PLANETARY CARRIER ASSY
  1. Remove the snap ring.
  2. Remove the balance oil guide.

Scheme 383

Scheme 383: INTERNAL GEAR

Scheme 384

Scheme 384
  1. Remove the snap ring.
  2. Remove the thrust gear plate.

Scheme 385

Scheme 385: FORWARD CLUTCH ASSEMBLY

Scheme 386

Scheme 386

Scheme 387

Scheme 387

Scheme 388

Scheme 388
  1. Install the forward clutch piston to forward clutch drum. NOTE: Apply CVTF to the seal of forward clutch piston. Insert it all the way to the end.
  2. Install the return spring.
  3. Install the chamber COMPL. NOTE: Apply CVTF to the sealing area of chamber COMPL.
  4. Compress the return spring using the ST to install the snap ring. ST1 18762AA010 COMPRESSOR SPECIAL TOOL ST2 398673600 COMPRESSOR
  5. Check the operation of forward clutch piston by blowing compressed air intermittently from forward clutch carrier hole.
  6. Place the driven plate, drive plate and retaining plate neatly in this order on surface table.
  7. Set the dial gauge to retaining plate, and read its scale. NOTE: The value, which is read in the gauge at this time, is zero point.
  8. Scale and record the weight "Z" of a flat board which will be put on retaining plate. NOTE: The value, which is read in the gauge at this time, is zero point. Use a flat board weighing less than 52 N (5.3 kgf, 11.7 lb).
  9. Put the flat board on retaining plate.
  10. Using the following formula, read the push/pull gauge and calculate "N". N = 52 N (5.3 kgf, 11.7 lb) - Z 52 N (5.3 kgf, 11.7 lb) : Load applied to clutch plate Z: Flat board weight
  11. Press the center of retaining plate by applying a force of "N" using push/pull gauge, and then measure and record the compression amount "A". NOTE: Measure at four points with a 90° interval and calculate the average.
  12. Install the dish plate, drive plate, driven plate, retaining plate and snap ring to the forward clutch carrier. NOTE: Install the dish plate in the correct direction.
  13. Measure and record the clearance "B" between the retaining plate and snap ring.
  14. Piston stroke calculation Calculate with A and B dimensions recorded before. If it exceeds the limit, replace with a new drive plate and adjust within the initial standard value. S mm (in) = A + B S: Piston stroke A: Compression amount of drive plate and dish plate B: Clearance between retaining plate and snap ring Initial standard: 1.0 - 1.4 mm (0.040 - 0.055 in) Limit thickness: 1.6 mm (0.063 in) Retaining plate Item number Thickness mm (in) 31567AB760 4.2 (0.165) 31567AB770 4.4 (0.173) 31567AB780 4.6 (0.181) 31567AB790 4.8 (0.189) 31567AB830 5.0 (0.197)

Note. Assemble in the reverse order of disassembly.

INTERNAL GEAR

Note. Assemble in the reverse order of disassembly.

SIDE RETAINER

Note. After adjusting the drive pinion backlash and tooth contact, replace the oil seal and O-ring with new parts.

Scheme 389

Scheme 389: SIDE RETAINER

Scheme 390

Scheme 390
  1. Remove the O-ring.
  2. Remove the oil seal.

Scheme 391

Scheme 391: DIFFERENTIAL CASE ASSY

Scheme 392

Scheme 392

Scheme 393

Scheme 393

Scheme 394

Scheme 394

Scheme 395

Scheme 395

Scheme 396

Scheme 396

Scheme 397

Scheme 397
  1. Install the washer and differential bevel gear into the differential case (RH).
  2. Install the differential bevel pinions into differential case (RH) and install the pinion shaft.
  3. Install the straight pin.
  4. Install the washer and differential bevel gear to the differential case (LH).
  5. Install the differential case (RH) to the hypoid driven gear.
  6. Install the differential case (LH) to the differential case (RH).
  7. Using the ST, install the hypoid driven gear by tightening the installation bolt. ST 18270KA020 SOCKET (E20) Tightening torque: 64 N.m (6.5 kgf-m, 47.2 ft-lb)
  8. Measure the backlash, and select the washer. Install the SUBARU genuine axle shaft to differential case. Part No. 38415AA070 Axle shaft Using ST1 and ST2, insert the ST2 through the window of differential case. Measure the backlash of the gear. NOTE: Measure the backlash by applying a differential bevel pinion tooth between two differential bevel gear teeth. When measuring, fix the differential bevel pinion gear in place with a screwdriver covered with cloth, or a similar tool. ST1 498247001 MAGNET BASE ST2 498247100 DIAL GAUGE Specification: 0.13 - 0.18 mm (0.0051 - 0.0071 in) If the backlash is not within specification, select a washer from the table below and replace. Washer Part No. Thickness mm (in) 803038021 0.95 (0.037) 803038022 1.00 (0.039) 803038023 1.05 (0.041)
  9. Using the ST, install the left and right taper roller bearings. ST1 499277100 BUSHING 1-2 INSTALLER ST2 398497701 SEAT

Note. After adjusting the backlash and tooth contact, replace the oil seal and O-ring of side retainer with new parts.

Scheme 398

Scheme 398: SIDE RETAINER
  1. Using the ST, install the oil seal. NOTE: Use a new oil seal. Apply differential gear oil to the oil seal lip and press-fitting surface. Oil seal has an identification mark (R, L). When installing oil seals, do not confuse the left and right. ST 18675AA000 DIFFERENTIAL SIDE OIL SEAL INSTALLER
  2. Install the O-ring. NOTE: Use new O-rings. Apply the differential gear oil to O-ring.