Mounting Automatic Transmission

WARNING: This page is about a different variant/trim than selected.

WARNING: Danger of objects or loads falling down

Risk of squashing or crushing
→ Secure components to prevent them from falling down.

Information

Screws which are tightened with a torque angle must be replaced with new ones.

Information

The tightening specifications for the basic engine are stored centrally.

> 1X00IN TECHNICAL VALUES

> 2X00IN TECHNICAL VALUES

> 1001IN TIGHTENING TORQUES, TIGHTENING SEQUENCES AND ASSEMBLY OVERVIEWS

Tightening torques and assembly instructions for other assemblies (e.g. chassis, electrics, transmission or body) or for peripheral engine equipment can be found in the corresponding documents.

Information

The sealing rings at the ends of the ATF lines on the transmission and cooler sides must be replaced before installation.

Fix engine to the crankshaft with special tool > 9595 - fixing pins.

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Disconnecting the crankshaft
NOTE:
Torque converter installed incorrectly
- Risk of damage to transmission and torque converter
  → Always observe installation dimension
  
  → When securing the transmission, check that the torque converter can turn freely and is not jammed.
  
  → Do not use force when screwing the engine and transmission together
CAUTION:
ATF pump can be damaged if not installed correctly.
- Risk of shearing off drivers on ATF pump pinion
  → Precisely align cut-outs on the converter hub with the drivers on the ATF pump pinion
  
  → Install the converter slowly and carefully
Before installing the transmission, make sure that the torque converter is inserted correctly in the transmission.
Check ins allocation dimension -a- .

> Control value (minimum dimension) 4.5 mm --

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Installation dimension for torque converter
Insert special tool > 9689 - centering pin in converter.

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Torque converter centering pin
Lift the transmission using the workshop crane and move it into the installation position with respect to the engine.
Put engine and transmission together.
The dowel sleeves on the engine must slip perfectly into the bores on the transmission bell housing.

Fit new transmission screws with the primary catalytic converter holders.

7.1 Tighten the two bottom screws using > 9687/1 - insert.
1. 7.1.1 > Initial tightening 38 (28 ftlb.) Nm --
2. 7.1.2 > Final tightening torque angle 90 Degree --

7.2 Tighten the remaining screws.

7.2.1 > Initial tightening 38 (28 ftlb.) Nm --

7.2.2 > Final tightening + 90 Degree --

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Fitting transmission screws

Remove special tool > 9689 - centering pin.
Tighten screws -1- and 2- on the rear cross member -3- .
> Initial tightening 50 (37 ftlb.) Nm --

> Final tightening 90° --

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Rear transmission cross member
Remove workshop crane from the engine.
Information
- A second fitter is required.
- Replace converter screws.
  Fit and tighten new converter screws:
  
  >373519 REMOVING AND INSTALLING AUTOMATIC TRANSMISSION
Place new screw on special tool > 9688 - bit insert and screw in screw.

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Opening for converter screw on engine
Position bit snap-on head and special tool > 9687 - insert and screw in screw, but do not tighten.
Turn crankshaft clockwise with special tool > 9714 - socket wrench insert.
Insert > 9595 - locating pin into the front bore on the converter bell housing -arrow- and hold it in place with slight pressure until it engages when the crankshaft is turned.

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Disconnecting converter screws
Complete the steps described above for the other five screws.
Pull off special tool > 9595 - locating pin before tightening the converter screws.
1. 16.1 Tighten converter screws.
  > Tightening torque 85 (63 ftlb.) Nm --
Insert plug for converter assembly opening. To do this, moisten the groove on the plug with water.

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Plug used to seal converter opening
Starting at the cut-out in the engine block -1- , press in the plug all the way round from position -2-3- .

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Plug
Check the position of the stopper -2- using an inspection mirror -1- . Make sure that the sealing lip -3- makes contact all the way round.

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Installation position of plug

Secure holder -1- for ATF lines to the front of the transmission.

> Tightening torque 23 (17 ftlb.) Nm --

20.1 Clip ATF line into holder -A- .

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Holder for ATF lines at front of transmission

Position the front ATF line -2- on the ATF heat exchanger -3- . Make sure that the lines are seated correctly.
1. 21.1 Tighten screws -1- .
  > Tightening torque 8 (6 ftlb.) Nm --
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ATF lines, top

Position lines -2- with holder in the transmission -3- .

Make sure that the lines are seated correctly.

22.1 Tighten fastening screw -1- .

> Tightening torque 20 (15 ftlb.) Nm --

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Mounting for ATF lines, rear

Tighten heat shield -1- screws -2- on the automatic transmission -3- .) Tightening torque 15 (11 ftlb.) Nm --

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Heat shield for automatic transmission
Push the vacuum hose -1- onto the T-piece -2- .

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Vacuum supply

Clip vacuum line -3- into the holder -4- .
Connect the coolant hose -2- for the ATF heat exchanger on the right to the connection piece and fit the clamp -1- .

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Right coolant line
Clip the hose -1- for the transmission vent into the holder -2- .

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Transmission vent hose

Connect the electric plug connection -1- for the crankshaft pulse sender at the bottom of the transmission and lock it.

27.1 Secure the wire harness with a tie-wrap if necessary.

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Plug connection for crankshaft pulse sender

Fit the front cardan shaft.
> 390219 Removing and installing front cardan shaft - section on "INSTALLING "

Place the catalytic converters in position on the engine and transmission assembly.

> 267619 REMOVING AND INSTALLING PRIMARY CATALYTIC CONVERTER

> 267319 REMOVING AND INSTALLING (MAIN) CATALYTIC CONVERTER

29.1 Fit and tighten the fastening nuts -1- on the primary catalytic converters.

> Tightening torque 23 (17 ftlb.) Nm --

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Primary catalytic converters

29.2 Tighten the screws -1- on the primary catalytic converters -3- to the gear supports -2- .

> Tightening torque 23 (17 ftlb.) Nm --

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Holder for primary catalytic converter

29.3 Tighten the screws -1- on the rear catalytic converters to the brackets -2- on the transmission.

> Tightening torque 23 (17 ftlb.) Nm --

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Holder for catalytic converters

Clip the wire harness -1- for the oxygen sensor on the right into the holders -2- on the engine.

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Wire harness for right oxygen sensor
Clip the wire harness -1- for the oxygen sensor on the left at the cylinder head cover into the holder -2- .

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Wire harness for left oxygen sensor
Place the holder -2- for the coolant lines in position on the transmission and fit the fastening screw -1- .
> Tightening torque 10 (7.5 ftlb.) Nm --

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Holder for coolant lines
Connect the coolant hoses -2- on the left of the transmission and fit the clamps -1- .

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Coolant hoses on left