Measuring Oil Pump - BMW C1 Repair Manual

When installing:
•
The outer rotor bears a punch mark for identifica-
tion.
L
Note:
Make sure that punch mark is toward inside of pump
housing.
•
Liberally coat oil-pump channels and preassem-
bled pump with oil before installing.
•
Note position of gearwheel (arrow).
•
Coat threads of self-tapping screws with Loctite
prior to installation (Tapite screws).
•
Turn pump so that tooth-edge gap can be
checked.
•
Check axial play of pump.
Operating fluids:
Tapite screws........................................ Loctite 243
X
Tightening torques:
Oil pump ........................................................ 6 Nm
11.30

Measuring oil pump

•
Check tooth edges of oil pump gear for deforma-
C1110290
tion.
•
Measure protrusions of needle roller.
•
Check runout of oil pump gear relative to shaft.
•
Check oil pump shaft for wear.
Wear values:
Axial run-out.......................... max. 0.3 mm (0.01 in)
Oil pump shaft....................min. 7.96 mm (0.313 in)
Housing diameter...................... 8.03 mm (0.316 in)
C1110300