Front Gear Housing And Gear Train; Front Crankshaft Seal In-Chassis Repair - Dodge D250 1990 Service Manual

Base Engine Components
DODGE Turbo Diesei
General Overview - In and Out-of-Chassis Repairs
Page 9C-3
Front Gear Housing and Gear Train
Note: Removal of the gear housing is an out-of chassis
repair.
The gear train consists of the crankshaft gear, lube pump gear
idler and drive gear, the camshaft gear, the fuel pump gear and
the accessory drive gear.
The gear housing provides a support for the injection pump,
the timing pin ami the accessory drive gear.
Front Crankshaft Seal
In-Chassis Repair
The front crankshaft seal is mounted in the front gear cover. A
double lipped Teflon seal is used. The sealing surface on the
crankshaft must be clean, dry and free of oil during assembly.
Camshaft, Tappets and Push Rods
In-Chassis Repair
The camshaft is gear driven from the crankshaft. A replaceable
bushing is used for the front journal to carry the side loading
from the accessory drive. The remainder of the journals
operate in cast iron bores in the cylinder block.
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