Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
13 54 ... Supplementary work for basic throttle setting (S62)
This work is carried out:
- on engines with adjustable pull rods at both cylinder banks
- if the throttle opening of 24.2 mm +/-0.5 mm cannot be achieved when the full-load adaptation stop is set
The non-adjustable pull rod (1) of cylinder bank 1-4 is replaced by an adjustable pull rod (2) (versions as on cylinder bank 5-8).
Clip in adjustable pull rod (2) of cylinder bank 1-4 on throttle side only.
Clip in adjustable pull rod of cylinder bank 5-8 on throttle and servomotor sides.
Turn back stop screw (1) a few turns.
This ensures that the stop screw does not influence the servomotor-side stop.
Activate servomotor at specified value 100 % and check whether measurement (A) = 24.2 mm +/- 0.5 mm is achieved.
If measurement (A) > 24.2 mm +/- 0.5 mm, shorten pull rod of cylinder bank 5-8 by turning hexagon (1) until measurement (A) = 24.2 mm +/- 0.5 mm is achieved at all throttles 5-8.
Screw in stop screw (1) until front end of screw rests on stop lug.
Activate servomotor at specified value 0 %.
Synchronizing cylinder banks with each other:
Position adjustable pull rod (1) of cylinder bank 1-4 on servomotor side on ball head.
Turn hexagon to adjust length of pull rod (1) so that ball socket is aligned centrally to ball head.
Force off adjustable pull rod (2) of cylinder bank 5-8 on servomotor side.
Position dial gauge plates on throttle body of cylinders 2 and 3 and throttle body of cylinders 6 and 7. Mount dial gauges in dial gauge plate supports for measuring at throttle bodies 3 and 6.
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.