DETROIT DIESEL 53
Cylinder Block 1.1
type shortening or permanent type antifreeze solution to the seal rings.
3. Slide the cylinder liners into the block, being careful not to roll or
damage the seal rings. Install new compression gaskets and water hole
seal rings in the counterbores in the top surface of the block.
4. Secure the plate(s) on the top of the block with 5/8 "-! 1 bolts and
flat washers.
5. Install the water hole cover plates and gaskets on the sides of the
block.
6. Immerse the cylinder block for twenty minutes in a tank of water
heated to 180 - 200 F.
7. Attach an air line to the water hole cover plate and apply 60 psi air
pressure to the water jackets and observe the water in the tank for
bubbles which will indicate cracks or leaks. A cracked cylinder block
must be replaced by a new block.
8. Remove the block from the water tank. Then remove the plates,
seals, gaskets and liners and blow out all of the passages in the block
with compressed air.
9. Dry the cylinder liners with compressed air and coat them with oil
to prevent rust.
METHOD "B"
This method may be used when a large water tank is unavailable, or
when it is desired to check the block for cracks without removing the
engine from the equipment which it powers. However, it is necessary to
remove the cylinder head(s), blower, oil cooler, air box covers and oil
pan.
Fig. 13 - Block Bore Measurement Diagram
1. Prepare the block as outlined in Method "A". However, before installing the large sealing plate, fill the water jacket
with a mixture of water and one gallon of permanent type antifreeze. The antifreeze will penetrate small cracks and its
color will aid in detecting their presence.
2.
Install the plate(s) and water hole covers as outlined in Method "A".
3. Apply 60 psi air pressure to the water jacket and maintain this pressure for at least two hours to give the water and
antifreeze mixture ample time to work its way through any cracks which may exist.
4. At the end of this test period, examine the cylinder bores, air box, oil passages, crankcase and exterior of the block
for presence of the water and antifreeze mixture which will-indicate the presence of cracks. A cracked cylinder block
must be replaced by a new block.
5.
After the pressure test is completed, remove the
Fig. 14 - Typical Cylinder Block Markings
March, 1973
SEC. 1.1
Page 7
