Mercedes-Benz 603 Service Manual page 311

Tester (020) with Y distributor
Test data
Boost pressure at full load in drive position " 3" at
n = 4000 rpm
Special tool
603 589 03 21 00
Commercial tester
09 10 III- 10012
connect to measuring point " C" and test boost
pressure.
Specification: 0.85-0.95 bar gauge pressure at
4000 rpm full load in drive position " 3" .
Note
This test can be conducted on the
dynamometer or on the road.
If the specified boost pressure is not reached,
perform the following checks:
Connecting line from boost pressure control
valve to compressor housing.
Switchover valve of engine overload protection
(09-250).
White vacuum line and rubber connections.
If all components are in working order, replace
turbocharger.
e.g. Bosch, MOT 002.01
Sun, DIT 9000
Sun, FMT-101 S/Master 3,
Sun, MCM-2110,
All-Test 361 O-MB
EXIT