72
Group 26 Cooling system
5. Install the insert in the heat exchanger.
NOTE! Be careful to install the insert in the correct
position.
Make sure the hole in the insert aligns with the
hole in the housing and that the venting hole is
upwards. The insert is marked with “UP”.
6. Install the covers on the front and rear ends of the
heat exchanger. Connect the hose from the sea-
water pump and tighten the clamp.
7. Assemble the exhaust manifold together with the
heat exchanger.
8. Fill the engine with coolant.
9. Open the sea cocks or valve on the S-drive and
start the engine. Check that no leakage occurs.
Replacing the circulation pump
Removal
1. Drain the coolant from the engine (freshwater sys-
tem).
2. Undo the alternator and remove the drive belt. Re-
move the alternator tensioner.
3. Remove the rubber hoses to and from the pump.
4. Remove the electric connection from the tempera-
ture monitor.
5. Remove the pump’s fixing bolts and lift out the
pump.
Fitting
1. Clean the contact surfaces on the pump and cyl-
inder block.
2. Install the coolant pump with a new gasket.
3. Fit the tensioner to the alternator.
4. Install the rubber hoses to and from the pump.
Tighten the hose clamps.
5. Install the drive belts. It should be possible to de-
press the belt approx. 10 mm between the pul-
leys.
6. Reconnect the temperature monitor.
7. Fill the engine with coolant. Start the engine and
check carefully that no leakage occurs.
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