Operation Manual

Job Card No.:
Engine:
Filing No.:
Cylinder Head
© 1199
0178-08-10 1982
01.08.01
S/BVM 628
Inspection
When using an endoscope all cylinder heads are to be inspected as per Job Card 01.05.04. Should
abnormal wear be found, remove one cylinder head per cylinder bank. To avoid any misjudgements, we
recommend removal of the cylinder head (Job Card 01.04.01) having the poorest appearance, for checking
and maintenance. The removed and dismantled cylinder head serves as comparison.
When adopting the above procedure, it is essential to observe the intervals for inspection of the combustion
chamber per endoscope, in accordance with the Maintenance Schedule.
It should be generell noted, however, that the use of the endoscope serves, firstly, to simplify maintenance
work and, secondly to help determine the lifespan of the components, depending on the application
concerned.
If no endoscope is available, one cylinder head of each cylinder bank (not one of the end cylinder heads) is
to be removed (Job Card 01.04.01) for checking and servicing.
The cylinder head servicing should be carried out together with the following jobs:
● Rocker Arm Inspection, Job 01.02.03
● Valve Guide Clearance Checking, Job 01.06.01
● Valve Seat and Cone Checking, Job 01.07.01
● Starting Valve Inspection, Job 01.11.01
● Safety Valve Servicing, Job 01.12.01
● Exhaust Manifold Inspection, Job 06.01.01
● Exhaust Elbow Inspection, Job 06.01.03
If these initial inspections reveal no faults, inspection of the remaining cylinder heads in the manner described
can be postponed until the next check becomes due in accordance with the Maintenance Schedule
IIf the findings again prove to be positive, maintenance of all of the cylinder heads can be put off again until
the next inspection becomes due.
However, should it be found during one of these inspections that the dismantled cylinder head has defects,
be sure to remove also the remaining heads for inspection and maintenance.
For refitting the cylinder head, see Job Card 01.09.01.
The Number of running hours up to the time when all cylinder heads must be serviced should be locally
entered in the Maintenance Schedule as the regular service interval to be opbserved in future.
Job Cards:
- 01.04.01
- 01.05.04
- 01.09.01
Servicing
The cylinder servicing intervals may differ very
considerably since they are governed by engine
application and load, as well as by fuel and lube oil
qualities. To arrive at a rational servicing interval, we
suggest that the following method be adopted.