1.1 Cylinder Block
DETROIT DIESEL 53
Fig. 11 - Location of Block Bore Seal Ring
Clean Cylinder Block
Fig. 12 - Checking Cylinder Block Bore with
1. Remove all of the plugs (except cup plugs) and
Tool J 5347
scrape all old gasket material from the block.
seal rings. It will also be necessary to use water hole
2. Clean the block with live steam. Make sure the oil
cover plates and gaskets to seal the water inlet -
galleries, air box floor and air box drain openings are
openings in the sides of the block. One cover plate
should be drilled and tapped to provide a connection
for an air line so the water jacket can be pressurized.
Jets are not machined in the camshaft
This method may be used when a large enough water
and balance shaft bushing bores in the current In-Line
tank is available and the cylinder block is completely
cylinder blocks. Oil is directed to the cam
stripped of all parts.
followers through small slots incorporated in the
1. Make sure the seal ring grooves in the cylinder
bores of the block are clean. Then install new seal
3. Dry the block with compressed air.
rings in the grooves (above the air inlet ports).
NOTE: The current blocks have two seal ring
Pressure Test Cylinder Block
grooves above the air inlet ports of each
cylinder bore. Only one seal ring is required,
After the cylinder block has been cleaned, it must be
however. Install the seal ring in the upper
pressure tested for cracks or leaks by either one of two
groove, if it is in good condition; if the upper
methods. In either method, it will be necessary to
groove is pitted or eroded, install the seal ring
make a steel plate of 1/2 " stock to cover each cylinder
in the lower groove.
bank of the block (Fig. 10). The plate(s) will
adequately seal the top surface of the block when used
2. Apply a light coating of hydrogenated vegetable
with cylinder liner compression gaskets and water hole