User Manual

• the accessory drive gear
• the fuel injection pump gear
The camshaft runs at half the rpm of the crankshaft.
The fuel injection pump runs at one and a half times
the speed as the crankshaft.
The fuel injection pump that is installed on the left
side of the engine is gear-driven from the timing
case. The internal fuel transfer pump is driven by the
fuel injection pump. The fuel transfer pump draws
low-pressure fuel from the primary fuel filter. The fuel
transfer pump delivers the fuel to the secondary filter.
The fuel then travels to the fuel injection pump.
The fuel injection pump increases the fuel to a
maximum pressure of 160 MPa (23200 psi). The fuel
injection pump delivers the fuel to the fuel manifold
(Rail). The fuel injection pump is not serviceable. The
engine uses speed sensors and the Electronic
Control Module (ECM) to control the engine speed.
For the specifications of the 854E-E34TA, 854F-
E34T, and 854F-E34T engines, refer to the
Specifications, “Engine Design”.
8 UENR0623-02
General Information
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