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4 Maintenance
4.1 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
cylinder head (with a new engine, after installation of new cylinder heads, after component mainte-
nance or extended 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-
Interval
cation
[h]
[a]
QL1
-
-
Table 37: 50-hours check
Item
Valve gear
Maintenance tasks
Check valve clearance (→ Page 167)
MS15027/02E 2015-04 | Maintenance | 49
Task
-
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