
Operation Manual / TPL69-A10 / -A30 ... TPL77-A10 / -A30
Taking out of operation at short notice
9
Locking the rotor
9.2
Page 124
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Locking the rotor
9.2
CAUTION
A locked rotor must be removed after the turbocharger repair and
checked for unbalance.
NOTICE
An exception is a test rig run up to maximum 25% engine load on new
engines with one or several turbochargers, which is sometimes re-
quested by customers. As operation with a locked rotor is only brief in
these cases and the loads are low, subsequent removal of the rotor is
not necessary.
Removed balancing screws may not be screwed in again.
NOTICE
Various intermediate rings are provided with the locking device for dif-
ferent compressor wheels. Attention must be paid to the compressor
wheel type ”CV” (for the balancing screw holes). The distance between
the locking flange (94003) and the assembly-disassembly device
(90020) must be compensated using the intermediate rings (94001
and/or 94002) depending on the compressor wheel version.
CAUTION
During operation of the engine with a locked turbocharger, the lubricat-
ing oil system must also remain connected to this turbocharger and
turned on if the gas inlet cannot be throttled. (See section Further
measures and information for operation with a locked rotor for 4-stroke
engines.) Otherwise components that are still intact can be damaged
through overheating.
Shut off the oil supply in the event of lubricating oil leaking from the tur-
bocharger.
9.2