The M67 auxiliary delivery pump in the E38 is a gear pump. It is flange-mounted on the high pressure pump (CP3). The gear pump replaces the “in-line” EFP fitted to the M57 engine.
Effect in the case of fault:
• Warning display via DDE lamp
• Power reduction in engine speed range > 2000 rpm (i.e. driving up an incline is possible at < 2000 rpm,
at > 2000 rpm the engine would stall)
