ECS Tuning BMW S54 - Page 34

ECS TUNING 1000 SEVILLE RD. WADSWORTH, OH 44281 1.800.924.5172 WWW.ECSTUNING.COM
34
BMW S54 DUAL VANOS REBUILD
®
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Step 13:
Step 14:
Thoroughly clean all oil pump components including the oil pump bearing
which is still located in the piston housing.
Note the reassembly position of the components. When placed back into
the holes in the perimeter of the oil pump rotor, the spring seat nipples
must face up, or outward.
Lay the components out in preparation for reassembly and replace the
original oil pump rotor with the new revised rotor.
Revised Rotor
As demonstrated in the RH photo, the spring seat nipple must protrude
into the spring.
SECTION 3B: VANOS OIL SYSTEM SERVICE