42.3
CLEANING THE CYLINDER BLOCK
42.3 CLEANING THE CYLINDER BLOCK
Before removing cylinder liners for block cleaning, the liner bores should be gauged to determine
whether liner replacement is necessary. Refer to section 42.3.1.
Remove cylinder liners with the cylinder liner removal tool (J–45876) before putting the block in
cleaning or de-scaling baths, to avoid trapping cleaning agents in block liner seating bores.
Clean the cylinder block as follows:
1. Remove all oil and water gallery plugs to allow the cleaning solution to enter the inside of
the oil and water passages. Remove piston oil spray nozzles at the base of each cylinder
bore.
2. Immerse and agitate the block in a hot bath of a commercial, heavy-duty alkaline solution.
3. Wash the block in hot water or steam clean it to remove the alkaline solution.
4. If the water jackets are heavily scaled, proceed as follows:
[a] Immerse and agitate the block in a bath of inhibited phosphoric acid.
[b] Allow the block to remain in the acid bath until the bubbling action stops
(approximately 30 minutes).
[c] Lift the block, drain it and immerse it again in the same acid solution for 10 more
minutes. Repeat until all scale is removed from the water jacket area.
[d] Rinse the block in clear, hot water to remove the acid solution.
[e] Neutralize the acid that may cling to the casting by immersing the block in an
alkaline bath.
[f] Wash the block in clean water and dry it.
EYE INJURY
To avoid injury from
fl
ying debris when using compressed
air, wear adequate eye protection (face shield or safety
goggles) and do not exceed 276 kPa (40 psi) air pressure.
5. Dry the cylinder block with compressed air. Blow out all of the bolt holes and passages
with compressed air.
NOTE:
The above cleaning procedure may be used on all ordinary cast iron and steel parts for
the engine. Aluminum parts, such as flywheel housing, 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.
42-12
DDC-SVC-MAN-0081 2010
Copyright © 2010 DETROIT DIESEL CORPORATION
Summary of Contents for EPA07
Page 1: ......
Page 2: ......
Page 287: ...23 OIL FILTER Section Page 23 1 REPLACEMENT OF THE OIL FILTER 23 3 ...