TORQUE CONVERTER STALL TEST
This test measures the maximum engine speed when the selector lever is in the "D" or "R" position and the torque converter stalls. This tests the operation of the torque converter, stator and one-way clutch operation, as well as the holding performance of the clutches and brakes in the transaxle.
| WARNING | Do not let anyone stand in front of or behind the vehicle while this test is performed. |
Scheme 1
- Check the transmission fluid level and temperature. Check the engine coolant temperature. Transmission fluid level: At the "HOT" mark on the dipstick Transmission fluid temperature: 70 - 80°C (158 - 176°F) Engine coolant temperature: 80 - 100°C (176 - 212°F) NOTE: Measures transmission fluid temperature with scan tool MB991958 (MUT-III sub assembly).
- Chock both rear wheels.
- Connect a tachometer.
- Apply the parking and service brakes fully.
- Start the engine. CAUTION: The throttle should not be fully open for any more than five seconds. If you repeat the stall test when the transmission fluid temperature is greater than 80°C (176°F), move the selector lever to the "N" position and let the engine run at approximately 1,000 r/min for at least one minute. Wait until the transmission fluid temperature returns to 80°C (176°F) or less.
- Move the selector lever to the "D" position. Fully depress the accelerator pedal and read the maximum engine speed. Standard value: Stall speed: 2,300 - 2,800 r/min
- Move the selector lever to the "R" position. Fully depress the accelerator pedal and read the maximum engine speed. Standard value: Stall speed: 2,300 - 2,800 r/min
TORQUE CONVERTER STALL TEST JUDGMENT RESULTS
- Stall speed is too high in both "D" and "R" range Malfunction of the torque converter (Slippage on the splines of the torque converter and the input shaft) Low line pressure Low-reverse brake slippage and malfunction of the one-way clutch
- Stall speed is too high in "D" range only Underdrive clutch slippage
- Stall speed is too high in "R" range only Reverse clutch slippage
- Stall speed too low in both "D" and "R" ranges Malfunction of the torque converter (Slippage of the one-way clutch) Insufficient engine output
>> A << Selector lever to "P" position. Turn the ignition key to "LOCK" (OFF) position. Install the shift lock cable unit rod to the selector lever assembly lock cam, and tighten the shift lock cable unit installation bolt to the specified torque. Tightening torque: 5.0 +/- 1.0 N.m (44 +/- 9 in-lb) Check the selector lever operation. (Refer to SELECTOR LEVER OPERATION CHECK ) >> B << TRANSAXLE CONTROL CABLE ASSEMBLY (TRANSAXLE SIDE)/ADJUSTING NUT INSTALLATION Place the selector lever and manual control lever in the "N" position. Place the cable stud into the manual control lever slot and install the adjusting nut loosely. Gently push the transaxle control cable into the manual control lever slot until the cable is taut. Tighten the adjusting nut to the specified torque. Tightening torque: 12 +/- 2 N.m (107 +/- 17 in-lb) INSPECTION Check the cable assembly for function and for damage. DISASSEMBLY AND ASSEMBLY INSPECTION SHIFT SWITCH ASSEMBLY CONTINUITY CHECK A/T KEY INTERLOCK AND SHIFT LOCK MECHANISMS REMOVAL AND INSTALLATION CAUTION: When removing and installing the shift lock cable unit, be careful not to hit the SRS-ECU. INSTALLATION SERVICE POINTS >> A << SHIFT LOCK CABLE UNIT INSTALLATION Selector lever to "P" position. Turn the ignition key to "LOCK" (OFF) position. Install the shift lock cable unit rod to the selector lever assembly lock cam, and tighten the shift lock cable unit installation bolt to the specified torque. Tightening torque: 5.0 +/- 1.0 N.m (44 +/- 9 in-lb) Check the selector lever operation. (Refer to SELECTOR LEVER OPERATION CHECK ) INSPECTION Check the cable assembly for function and for damage. TRANSAXLE ASSEMBLY REMOVAL AND INSTALLATION CAUTION: *: Indicates parts which should be temporarily tightened, and then fully tightened after placing the vehicle on the ground and loading the full weight of the engine on the vehicle body. Required Special Tools: MB991454: Engine Hanger Balancer MB991527: Hanger MB991895: Engine Hanger MB991928: Engine Hanger Slide Bracket (HI) MB991932: Foot (standard) MB991929: Joint (50) MB991930: Joint (90) MB991934: Chain and Hook Assembly REMOVAL SERVICE POINTS << A >> TRANSAXLE UPPER PART CONNECTING BOLTS REMOVAL Do not fully unscrew the bolts from the transaxle assembly. Only loosen the bolts. << B >> DRIVE PLATE BOLTS REMOVAL Turn the crank shaft so that it is positioned to allow the drive plate bolt to be unscrewed. Push in the torque converter into the transaxle side and make a point to ensure that the torque converter does not remain on the engine side. << C >> TRANSAXLE MOUNT ASSEMBLY REMOVAL Jack up the transaxle assembly gently and then remove the transaxle mounting. << D >> ENGINE ASSEMBLY SUPPORTING < Engine hanger MB991895 is used > Set the special tool MB991895 to the front fender assembling bolt (A, B) and radiator upper insulator assembling bolt (C, D) inside the engine room, as shown in the figure of the instructions. Set the special tools MB991454 and MB991527, support the engine transaxle assembly, and unscrew the transaxle assembly upper part coupling bolts that were priority loosened. < Engine hanger MB991928 is used > Assemble the engine hanger (special tool MB991928). Set following parts to the base hanger. Slide bracket (HI) Foot (standard) (MB991932) Joint (90) (MB991930) Joint (50) (MB991929) Set the special tool MB991895 to the strut mounting nuts (A, B) and radiator upper insulator assembling bolt (C, D) inside the engine room, as shown in the figure of the instructions. NOTE: Adjust the engine hanger balance by sliding the slide bracket (HI). Set the special tools MB991454 and MB991895, support the engine transaxle assembly, and unscrew the transaxle assembly upper part coupling bolts that were priority loosened. INSTALLATION SERVICE POINTS >> A << TRANSAXLE ASSEMBLY INSTALLATION Engage the torque converter into the transaxle side securely, and then assemble the transaxle assembly on the engine. >> B << TRANSAXLE MOUNT STOPPER INSTALLATION Install the transaxle mount stopper so that the arrow mark points as shown in the illustration. >> C << TRANSAXLE STAY INSTALLATION Install the transmission stay as below. Tighten the engine-side bolts to the specified torque. Tightening torque: 22 +/- 4 N.m (16 +/- 3 ft-lb) Tighten the transmission-side bolts to the specified torque. Tightening torque: 44 +/- 10 N.m (33 +/- 7 ft-lb) >> D << TRANSAXLE UPPER PART CONNECTING BOLTS INSTALLATION Assemble the harness clamp as shown in the illustration of the instructions. The bolts A shown in the illustration of the instructions should then be tightened along with the grounding. >> E << TRANSAXLE CONTROL CABLE (TRANSAXLE SIDE)/ADJUSTING NUT INSTALLATION Place the selector lever and manual control lever in the "N" position. Place the cable stud into the manual control lever slot and install the adjusting nut loosely. Gently push the transaxle control cable into the manual control lever slot until the cable is taut. Tighten the adjusting nut to the specified torque. Tightening torque: 12 +/- 2 N.m (107 +/- 17 in-lb) TRANSFER ASSEMBLY REMOVAL AND INSTALLATION CAUTION: *: Indicates parts which should be initially tightened, and then fully tightened after placing the vehicle horizontally and loading the full weight of the engine on the vehicle body. REMOVAL SERVICE POINT << A >> TRANSFER ASSEMBLY REMOVAL CAUTION: After pulling out the transfer assembly, upon returning the transaxle assembly to the original position be careful not to damage the bush parts of the roll stopper. Use a tire lever, etc. to slide the transaxle assembly to the front of the vehicle, create a clearance between the transaxle assembly and cross member, and then pull out the transfer assembly from that clearance. TRANSMISSION FLUID COOLER, HOSE AND PIPE REMOVAL AND INSTALLATION REMOVAL SERVICE POINT << A >> SPLASH SHIELD CLIP REMOVAL Remove the clip shown in the illustration. SPECIFICATIONS FASTENER TIGHTENING SPECIFICATIONS Fastener Tightening Specifications (1 Of 2) ITEM SPECIFICATION Key interlock and shift lock mechanisms Shift lock cable unit fixing bolt 5.0 ± 1.0 N.m (44 ± 9 in-lb) Transaxle assembly Adjusting nut 12 ± 2 N.m (107 ± 17 in-lb) Bell housing cover attaching bolt 9.0 ± 1.0 N.m (80 ± 9 in-lb) Drive plate bolt 49 ± 3 N.m (36 ± 2 ft-lb) Starter motor connecting bolt 30 ± 3 N.m (23 ± 2 ft-lb) Transaxle assembly lower part coupling bolt 48 ± 6 N.m (36 ± 4 ft-lb) Transaxle assembly upper part coupling bolt 48 ± 6 N.m (36 ± 4 ft-lb) Transaxle mount bracket mounting nut 47 ± 7 N.m (35 ± 5 ft-lb) Transaxle mount stopper mounting nut 82 ± 7 N.m (61 ± 5 ft-lb) Transaxle stay mounting bolt To engine 22 ± 4 N.m (16 ± 3 ft-lb) To transaxle 44 ± 10 N.m (33 ± 7 ft-lb) Transmission fluid drain plug 32 ± 2 N.m (24 ± 1 ft-lb) Transmission range switch mounting bolt 11 ± 1 N.m (96 ± 8 in-lb) Transaxle control Adjusting nut 12 ± 2 N.m (107 ± 17 in-lb) Detente spring 1.8 ± 0.2 N.m (16 ± 2 in-lb) Shift lock cable unit fixing bolt 5.0 ± 1.0 N.m (44 ± 9 in-lb) Shift knob attaching screw 1.8 ± 0.2 N.m (16 ± 2 in-lb) Shift switch attaching screw 5.0 ± 1.0 N.m (44 ± 9 in-lb) Selector lever assembly 12 ± 2 N.m (102 ± 22 in-lb) Transaxle control cable assembly 12 ± 2 N.m (107 ± 17 in-lb) Fastener Tightening Specifications (2 Of 2) ITEM SPECIFICATION Transfer assembly Air guide attaching bolt 9.0 ± 2.0 N.m (80 ± 17 in-lb) Air guide attaching nut 5.0 ± 1.0 N.m (44 ± 9 in-lb) Rear roll stopper bracket mounting nut 52 ± 7 N.m (39 ± 5 ft-lb) Transfer connecting bolt 69 ± 9 N.m (51 ± 7 ft-lb) Transfer oil drain plug 32 ± 2 N.m (24 ± 1 ft-lb) Transfer oil filler plug 32 ± 2 N.m (24 ± 1 ft-lb) Transmission fluid cooler Cooler bracket attaching Bolt 12 ± 2 N.m (102 ± 22 in-lb) Nut 12 ± 2 N.m (102 ± 22 in-lb) Transmission fluid cooler attaching bolt 12 ± 2 N.m (102 ± 22 in-lb) SERVICE SPECIFICATIONS LUBRICANTS Не нашли то, что искали? 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