Mercedes-Benz 602, Service Manual

Page: 24 / 324

Contact handle for compression pressure recorder
001 589 78 21 00, connect, adapter line
124 589 36 63 00 (items 3 5).
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
turn over a number of times to clean out; the
transmission must be in neutral and the shutoff
lever on the injection pump pressed to “stop”
(item 6).
Compression pressure recorder (01) bolt appropriate adapter (03) and flexible
connector (02) into precombustion chamber of
cylinder to be checked (item
Compression check; shift transmission to neutral and turn
engine over at least 9 revolutions with the
shutoff lever on the injection pump pushed to
“stop” (items 8 9).
Note
Check compression in remaining cylinders in
same manner.
Measured compression values compare with specified test values (item 10).
Note
If
one or more cylinders do not have the
minimum compression, determine cause.
Test values with engine at operating temperature (approx. 80 bar
Compression pressure, normal 26 32
Minimum compression pressure approx. 18
Permissible difference between individual cylinders max. 3
Tightening torques
Nm
Union nuts on injection lines (reference value) 1 0 - 2 0
Nozzle holders in prechambers
Nozzle holders for angular injection 30