B. Vehicles With Shift Point Retard (CAT Heating)

Removing, Installing and adjusting control pressure cable with vacuum element

B. Vehicles with shift point retard (CAT heating)





Removing, installing (with shift point retard)




1 Turn and pull lacking plate (arrow) upwards.

2 Rotate control pressure cable with vacuum element and remove from transmission housing.

3 Carry out basic setting:
Transfer dimensions "a" and "b" from old control pressure cable to the new one.
a) Dimension "a": Measure and adjust position of the adjusting screw (11).
b) Subject vacuum element (7) to >400 mbar vacuum.
C) Push control pressure cable together and pull it apart again.
d) Dimension "b": Measure position of valve (2) and set to adjusting screw (10).




4 Push on cap (12).

Caution! Danger of water entering!

5 Pull out valve (2) with a hook, until it slots into mounting position.
6 Introduce control pressure cable with vacuum element into transmission and install. Ensure this is correctly locked into place.

Testing shift point retard

1 Connect both vacuum limits to switchover valve (Y3/3). Shift point retard is switched on.
2 During test drive, test in selector lever position "D" at low throttle: For adjustment values, refer to shift point table.

Note:
- Turn adjusting screw (11) clockwise: Shift point at lower speed
- Turn adjusting screw (11) anticlockwise: Shift point at higher speed.

Models 202.121/125 with Tempomat/cruise control




1 Accelerate in Tempomat mode in selector lever position "D" and establish upshift point 3-4 (nominal value 45-50 km/h).

2 Compare actual value with nominal value. If actual value differs from nominal value:
a Adjust the adjusting screw (11) from the vacuum element for shift point retard.
b Check electric control
c Check pneumatic control

3 In Tempomat mode at approx. 70 km/h, decelerate and introduce 4-3 downshift with selector lever from "D" to "3".
The downshift must take place immediately, (pay attention to engine braking effect).

4 If engine braking is not detectable:
a Check electric control.
b Check pneumatic control.