2. Drain coolant (see chapter 2).
3. Loosen the clamp screw or nut and remove the end stop from the cable (see pictures).
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4. Unscrew the lock nut and remove the adjusting ring and cable sheath from the bracket on the injection pump (see photo).
5. Unscrew the temperature sensor from the cover of the thermostat housing and remove the washer.
6. Install a new temperature sensor with a new washer and tighten securely.
7. Insert the cable with the adjusting ring into the bracket, screw on the lock nut and tighten it by hand.
8. Insert the end of the cable into the lever, install the end stop and lightly grab it.
9. With a cold engine, move the fast idle lever on the 2 knurled adjuster (Bosch injection pump until January 1984) all the way towards the handwheel and then tighten the clamp screw or nut with the end stop touching the lever or adjuster.
10. Adjust the cable with the adjusting ring so that the fast idle lever touches its stop (or the regulator has been pushed all the way in) and then tighten the adjusting ring locknuts.
11. Measure the exposed part of the rope.
12. Fill liquid into the cooling system (see chapter 2), start the engine and bring it up to normal operating temperature.
13. With a hot engine, check that the exposed part of the cable has increased by at least 6.0 mm, which indicates that the temperature sensor is working properly.
14. In the case of Bosch injection pumps produced before January 1984, check that there is a gap of 1.0 mm between the end clamp and the end of the regulator. If this is not the case, adjust the gap using the adjusting ring.
15. Check that the engine speed increases when the fast idle lever or governor is moved all the way towards the flywheel. On early Bosch pumps, the speed should increase by 200±50 rpm. For other pumps, the idle speed should be 950±50 rpm. If necessary, turn the knurled knob or lever stop.
16. Turn off the engine.