Lube Oil Pump
Maintenance / Disassembly and reassembly
A5.05. 08.03.02.00
M20
en / 31.05.2010 IB001444 2/2
08
1.7 Check the tooth surfaces for wear (pitting,
cross bearing, disintegrations).
1.8 Check the bearing bushes (Fig. 2/15 and 16), driving wheel shaft ends and impeller axle ends for
wear and renew them if required with original MaK spare parts.
2. Reassembly
2.1 Mount the lube oil pump in reverse order.
2.2 Check the contact reflection between gear wheel cone and drive shaft cone by spot-grinding. The
uniformly distributed contact reflection must be offset to the thicker end.
2.3 Heat up the gear wheel (Fig. 1/2) to approx. 150 °C in the oil bath and shrink it on the driving
wheel shaft (4) (The conical surfaces are free from grease and dry).
2.4 Grease the thread and contact surface of the hexagon screw (3) and the washer with
the Molykote paste “G-Rapid Plus” and tighten it with a torque of
M = 60 Nm.
2.5 Insert the lube oil pump (1) with gear wheel carefully in cylinder block and crankcase (2) (the tooth
surfaces of the driving gear wheels must mesh into each other) and mount it at the pump carrier
plate with sealing compound.
2.6 Connect the suction pipe and delivery pipe with new gaskets.
2.7 Check the lube oil supply of the gear wheels.
2.8 Start up the lube oil pump (1) and vent the system. Check for tightness.
NOTE
Undercool new bushes before the installation.
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