Mercedes-Benz 603 Service Manual page 27

Bolt compression pressure recorder into pre-
chamber of cylinder to be tested with appropriate
adapter (03) and flexible connector (02).
Note
On engines with angular injection use adapter
602 589 00 63 00.
8 Crank engine at least 8 revolutions to test
compression.
9 Perform test on remaining cylinders in same
manner.
10 After completing the compression test
compare pressures measured with specified
values.
Note
If one or more cylinders do not have the
minimum compression pressure, check cylinder
for leakage (01-015) and determine cause.
11 Install in reverse order.
01.10 - OlO&
EXIT