Detroit Diesel 4000 Series, Руководство по обслуживанию, Страница: 80 / 2706

SERIES 4000 12/16V SERVICE MANUAL
Cleaning
Use only fluids and lubricants that have been tested and approved by Detroit Diesel Technical
Service.
Before removing any engine subassemblies (but after removing electrical equipment), thoroughly
clean the engine exterior.
NOTICE:
Engine sensors, and other electronic components, may be
damaged if subjected to the high temperatures of a solvent tank.
Therefore, ensure that all electronic components are removed
from engine assemblies before subassemblies are submerged
in a solvent tank.
After each subassembly is removed and disassembled, individual parts should be cleaned. Only
clean parts can be satisfactorily inspected.
The same basic procedure is used to clean all ordinary cast iron parts, including the cylinder block.
Steam Cleaning
A steam cleaner is indispensable for removing heavy accumulations of grease and dirt from the
exterior of the engine and its subassemblies.
Solvent Tank Cleaning
Solvent cleaning requires a tank large enough to accommodate the largest part to be cleaned
(usually the cylinder block).
To avoid injury (burning), wear adequate protective
clothing (eye protection, rubber apron, rubber boots,
rubber gloves). To prevent splashing, carefully lower the
block into the phosphoric acid solution.
Fill the tank with a commercial heavy-duty solvent. Heat the cleaning solution to 82-93 C
(180-200 F). Using a hoist, lower large parts directly into the tank. Use a wire mesh basket for
smaller parts. Immerse parts until grease and dirt are loosened.
NOTE:
Aluminum parts, such as flywheel housing, pistons, air intake manifold, oil filter adaptor
and the camshaft gear access cover should NOT be cleaned in this manner. Mention will
be made of special procedures when necessary.
All information subject to change without notice.
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