DETROIT DIESEL 53
1.3
CRANKSHAFT
diameter and the connecting rod journals are 2-1/2"
is a one-piece steel
The crankshaft (Fig 1)
in diameter.
forging, heat-treated to ensure strength and durability.
All main and connecting rod bearing journal and oil
seal surfaces are induction hardened.
Complete static and dynamic balance of the
crankshaft has been achieved by counterweights
incorporated in the crankshaft.
The crankshaft end play is controlled by thrust
washers located at the rear main bearing cap of the
engine. Full pressure lubrication to all connecting rod
and main bearings is provided by drilled passages
within the crankshaft and cylinder block.
Remove Crankshaft
When removal of the crankshaft becomes necessary,
first remove the transmission, then proceed as follows:
On In-Line
engines, six tapped holes are
provided in the rear end of the crankshaft for
1. Clean the exterior of the engine.
attaching the flywheel.
2. Drain the cooling system.
3. Drain the engine crankcase.
4. Remove all engine to base attaching bolts. Then,
with a chain hoist and sling attached to the lifter
brackets at each end of the engine, remove the engine
from its base.
In-line engine main bearing journals are 3" in
Fig. 1 - Crankshaft Details and Relative Location of Parts (Three Cylinder In-Line Engine
Crankshaft Shown)
SEC. 1.3 Page 1
November, 1973
