Transmission Mount: Service and Repair

A Engine mount without stop
B Engine mount with stop

NOTE: Models 116.120, 123.133/153, 123.193 (USA) (J) version and 126.120 are provided with an engine mount without stop since start of series.

Model 123.193 standard version has been provided with an engine mount with stop up to July 1981.

Starting July 1981 likewise without stop.

For this purpose. vehicles with automatic transmission W 4 B 025 (722.120) had to be provided with a rubber buffer on transmission tunnel to prevent transmission vent from knocking against tunnel.

If a new engine mount with stop is installed, the stop requires adjustment after 1000 - 1500 km and 7500 km.


Removal





1 Unscrew nuts (1).
2 Unscrew screws (14).






Model 116.120
1 Nut M 12 x 1.5
2 Spring washer B 12
4 Engine mount
12 Engine carrier
13 2 washers
14 2 screws M 8 x 15
16 4 washers 8 A
17 4 screws M 8 x 20
18 2 snap rings A 8


3 Push transmission in upward direction by means of a pit lift at intermediate flange and remove engine mount (4).






Models 123.133/153 and 123.193 standard version starting July 1981 (J) (USA) version from Start of series
1 Nut M 12 x 1.5
2 Spring washer B 12
4 Engine mount
12 Engine carrier
13 Washer
14 Combination screw
15 Cage nut
16 Washer
17 Combination screw






Model 123.193 standard version up to July 1981
1 Nut M 12 x 1.5
2 Spring washer B 12
4 Engine mount
6 Threaded plate
8 Holder
10 Washer 8.4
11 Adjusting screws M 8 x 75
12 Engine carrier
13 2 washers
14 2 screws M 8 x 18
15 4 cage nuts
16 4 washers
17 4 screws M 10 x 22






Model 126.120
1 Nut M 12 x 1.5
2 Spring washer
4 Engine mount
12 Engine carrier
16 washer 10.5
17 Combination screw M 10 x 22
13 Washer
14 Combination screw M 8 x 15
15 Nut holder


4 On model 123.193 standard version up to July 1981, unscrew adjusting screw (11 and take engine mount (4) out of holder.



Installation
5 On model 123.193 standard version up to July 1981, place new engine mount into holder (8).
6 Place new engine mount with or without holder (depending on model) on engine carrier (12).
7 On model 123.193 screw-in adjusting screw (11) (do not tighten).
8 Lower transmission.
9 Position screws (14) and tighten to 30 Nm.
10 Screw-on nut (1). Torque reference value 70 Nm.
11 On model 123.193, adjust engine stop.