Circulation Pump; Sea Water Pump - Volvo MD2010 Workshop Manual

Cooling system
Replacing the circulation pump
Dismantling
1. Drain off the refrigerant from the engine (fresh wa-
ter system).
2. Release the alternator and remove the drive belt.
MD2030, MD2040: Remove the clamp for the alter-
nator.
3. Remove the rubber hoses to and from the pump.
4. Release the electric cables to the temperature re-
l ay.
Fig. 107. MD2030. Circulation pump
5.
Remove the pump's attachment screws and lift off
the pump.
MD2030: Remove the back piece (plate), spring,
and thermostat.
Fitting
1.
Clean the mating surfaces on the pump and cylin-
der block.
2.
MD2030: Place the thermostat and spring in the
pump. Fit the back piece (plate) on the pump with a
new gasket.
66
Fig. 108. Application of sealing compound (silicon)
3. Apply sealing compound (silicon, Volvo Penta part
No. 1161277-7) on the cylinder block as per Fig.
108, shaded area.
Fit the refrigerant pump with a new gasket.
4. MD2030, MD2040: Fit the clamp to the alternator.
5. Fit the rubber hoses at the pump's inlet and outlet.
Tighten the hose clips.
6. Fit the drive belt. It should be possible to press the
belt down approx. 10 mm (.40 in) between the pul-
l eys.
7.
Connect the contact piece to the temperature relay.
8.
Fill up with refrigerant. Start the engine and check
that no leakage occurs.
Replacing the pump wheel in the sea
water pump
Close the bottom cock, or the cock on the S-drive
before working on the cooling system.
1. Dismantle the pump's end cover and drain off the
water in the sea water system.