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Volvo 850 automatic transmission service manual

Volvo 850 service & repair manual

TRANSMISSION SERVICING – A/T

1995 Volvo 850

AUTOMATIC TRANSMISSION SERVICING Volvo 850, 940, 960

APPLICATION

VOLVO AUTOMATIC TRANSMISSION APPLICATIONS
Vehicle Model Transmission Model
850 ………………………………………. AW50-42
940 ………………………………………… AW-70
940 Turbo …………………………………… AW-71
960 ………………………………………… AW-40

LUBRICATION

SERVICE INTERVAL

Check fluid level every 10,000 miles.

CHECKING FLUID LEVEL

1) Ensure vehicle is level. Apply parking brake and gear selector lever to “P” position. Start and idle engine. Move gear selector lever through all gears, while pausing 4-5 seconds for engagement at each position.
2) Return gear selector lever to “P” position. Wait 2 minutes and check fluid level with engine idling. Level should be between MIN and MAX marks.

RECOMMENDED FLUID

FLUID SPECIFICATIONS
Application ATF Type
850 (AW50-42) ………………….. Dexron IIE Or Mercon
940 (AW-70) ………………………… Type “F” Or “G”
940 Turbo (AW-71) …………………… Type “F” Or “G”
960 …………………………… Dexron IIE Or Mercon

FLUID CAPACITIES

TRANSAXLE REFILL CAPACITIES
Application Refill Qts. (L) Dry Fill Qts. (L)
850 (AW50-42) ………… N/A …………… 8.1 (7.6)
940 (AW-70) ……….. 4.1 (3.9) ………… 7.8 (7.4)
940 Turbo (AW-71) ….. 4.1 (3.9) ………… 7.8 (7.4)
960 (AW-40) ………. 5.6L (5.2) ………… 8.2 (7.7)

DRAINING & REFILLING

940
1) Remove drain plug and drain transmission. Disconnect filler tube and remove oil pan.
2) Remove and clean oil strainer. Install strainer. Tighten strainer bolts to 18-25 INCH lbs. (2-3 N.m). Install oil pan with new gasket. Tighten bolts to 42 INCH lbs. (5 N.m). Tighten filler tube to 65 ft. lbs. (88 N.m).
3) To flush oil cooler, disconnect fluid return pipe from transmission. Place end of pipe in container. Add about 3.5 qts. (3. 4L) of fluid in transmission.
4) Start engine and let idle. Turn off engine when clean oil comes out of pipe. Connect pipe and fill transmission.

ADJUSTMENTS

NOTE: Adjustment procedures for some models are not available.

THROTTLE & KICKDOWN CABLES

850
volvo 850 throttle kickdown cable automatic transmission gearbox
Depress accelerator pedal. With pedal depressed, distance from cable sheath to clip on cable should be approximately 1.98-2.06″ (50.2-52.3 mm). See Fig. 1. Adjust distance on cable sheath if necessary.
Fig. 1: Checking Transmission Throttle Cable
Courtesy of Volvo Cars of North America.

GEARSHIFT CABLE

850
1) Shift gear selector lever to “R” position. Disconnect gearshift cable at transmission rod arm. Move transmission rod arm forward to “P” position. See Fig. 2.
NOTE: Do not move transmission cable to adjust selector lever position. Transmission cable position must not be altered.
2) Ensure vehicle is in Park by attempting to roll vehicle. Move transmission rod arm to “R” (next position). Apply a small amount of grease to rod arm pin. Carefully reinstall cable on transmission
rod arm. Ensure gear selector does not move during installation.
volvo 850 gearshift cable automatic transmission gearbox AT
3) Move gear selector lever to “N” position. Push lever forward, but do not touch lock button. Play should be felt. Move gear selector lever to “D” position. Push selector lever backward, but do not touch lock button. Play should be felt.
Fig. 2: Adjusting Rod Arm
Courtesy of Volvo Cars of North America.

GEARSHIFT LINKAGE

940
1) Engine should start in Neutral or Park only. Back-up lights should only operate in Reverse. Gear selector should be vertical in Park. If gear selector is not vertical, proceed to next step.
2) Place gear selector in Park. Loosen lock nuts for actuator and selector rods. See Fig. 3. Ensure transmission lever is in Park. Rotate output shaft on transmission until it locks.
3) Place gear selector in a vertical position, or slightly forward, and tighten lock nut. Push reaction lever lightly rearward until a slight resistance is felt. Tighten lock nut to 42 INCH lbs. (5
N.m).
4) Ensure free play between pin and stop in Drive and Neutral is less than or equal to play between pin and stop in “3” and “2” positions. If free play is correct, tighten lock nut to 12-17 ft. lbs. (17-23 N.m).
NOTE: If gear selector is stiff in “3” position, move reaction lever approximately 1/8″ toward front and recheck operation.
5) After adjustment, ensure vehicle only starts in Neutral or
volvo 940 gear shift linkage automatic transmission AW71 gearbox
Park and back-up lights come on only in Reverse.
Fig. 3: Adjusting Shift Linkage (940) Courtesy of Volvo Cars of North America.

NEUTRAL SAFETY SWITCH

Neutral safety switch is located at bottom of selector lever. No adjustment is necessary.

SHIFT INTERLOCK SYSTEM

Testing and adjustment information for shift interlock system is not available. See WIRING DIAGRAMS.

WIRING DIAGRAMS

volvo 850 automatic transmission gearbox AT wiring diagram

Fig. 4: Shift Interlock System Wiring Diagram (1995-96 850)
volvo 940 740 automatic transmission gearbox AT wiring diagram AW71
Fig. 5: Shift Interlock System Wiring Diagram (1995 940)
volvo 960 automatic transmission gearbox AT wiring diagram
Fig. 6: Shift Interlock System Wiring Diagram (1995-96 960)

 

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