5 Maintenance
5.1 50-hours check
50-hours check
One-time operations to be carried out after a test run or after the first 10 to 50 operating hours of the cylin-
der head (with a new engine, after installation of new cylinder heads, after component maintenance or ex-
tended component maintenance).
When installing a cylinder head with run-in mating faces (e.g. after piston replacement), a repeated check
after the first 50 operating hours is not necessary.
Qualifi-
cation
Interval
Item
Maintenance tasks
Task
[h]
[a]
QL1
-
-
Valve gear
Check valve clearance (→ Page 141)
-
Table 21: 50-hours check
48 | Maintenance | MS150098/02E 2016-11
TIM-ID: 0000002785 - 002
