Pump Injection System; Drive Mechanism - Volkswagen 1.9-Liter TDI Owner's Manual

1.9-liter tdi engine with pump injection
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Pump Injection System

Injection Cam
(Hidden by
Rocker Arm Roller)
Valve Cam
18

Drive Mechanism

The camshaft has four additional cams for
driving the pump/injectors.
They activate the pump/injector pump
pistons with roller-type rocker arms.
Roller-Type
Rocker Arm
SSP209/015

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1.9 tdi

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