Flywheel Housing And Flywheel In-Chassis Repair - Dodge D250 1990 Service Manual

General Overview-In and Out-of-Chassis Repairs
Page §0-4
Base Engine Components
DODGE Turbo Diesel
The camshaft has lobes to operate the intake and exhaust
valves and a special lobe to drive the lift pump. The valve lobes
contact "mushroom" shaped valve tappets which operate the
push rods. The operating arm of the lift pump rides directly on
the special lobe on the camshaft. The profile of the cam lobes
is the same for all B Series engines.
The center line of the tappet is slightly offset from the center
line of the cam lobe. This design feature and the slightly convex
surface of the tappet causes the tappet to rotate as it is lifted by
the cam.
The ball end of the push rod fits into a ball socket in the tappet.
The other end of the push rod is fitted with a socket into which
the bail end of the rocker lever adjusting screw operates.
Flywheel Housing and Flywheel
In-Chassis Repair
Ring dowels are used to locate the housing within 0.20mm
[0.008 in.] TIR.
Note: Service housings are drilled. Re-dowelling is not required
when Installing a new or different housing.