Mercedes-Benz 603 Service Manual page 30

Testing
1 Warm engine up to operating temperature
(approx. 80 " C).
2 Remove all nozzle holders (07-230).
Open cap on coolant expansion tank only at
coolant temperatures below 90 " C.
3 Remove cap on coolant expansion tank.
4 Check coolant level in coolant expansion
tank and add, if necessary.
5 Open retaining strap on air cleaner cover on
naturally aspirated engines or unscrew hex. head
bolts on air cleaner cap on Turbo-engines,
remove air cleaner cap and take out filter
cartridge.
6 Remove 011 filler cap.
7 Move piston in cylinder to be checked to
TDC, ignition stroke.
8 Bolt appropriate adapter (01) with straight or
angular connector (02) into precombustion
chamber of cylinder to be checked.
9 Calibrate cylinder leakage tester and bolt
connection hose (03) of tester onto connector
01.10 - 01X.3
EXIT