Piston And Connecting Rod Assemblies Out-Of-Chassis Repair - Dodge D250 1990 Service Manual

Base Engine Components
DODGE Turbo Diesel
General Overview - In and Out-of-Chassis Repairs
Page9C-5
Piston and Connecting Rod Assemblies
Out-of-Chassis Repair
Piston features include: high swirl combustion bowl cast
aluminum body and 3 ring grooves. The piston for the
turbocharged engines includes a ni-resist insert with a
keystone profile for the top piston ring. Always check the part
number to be sure the correct configuration is used during
piston replacement.
The piston ring sets consist of three rings, the top ring of the
set has a keystone profile which operates in a ni-resist insert
cast into the piston.
Turbocharged
Top
Intermediate
Oil Control
A free floating, hollow piston pin Is used to attach the piston to
the connecting rod. Lubrication of the pin and journal is
accomplished by residual spray from the piston cooling
nozzles.