RDG603A13
– Issue 19
Page 60 of 97
Figure 35: River Boat Anode Location
14. Raw Water Pump Impellor Change (Work Boat & River Boat)
The pump is located on the front of the engine.
Remove the pump cover plate.
Remove the pump impeller (special tools are available from chandleries to assist with
this task).
Note: Do not lever against the front of the pulley housing as it is easily damaged.
Inspect the pump housing and front housing for damage or wear.
Replace the impellor.
Replace the cover plate gasket if damaged.
Replace any other worn components as necessary.
15. Engine Heat Exchanger Tube Stack Flushing
For Work Boats
When the engine is cold, drain the water from the engine block. Remove the hose from
the tap and drain.
Drain water from the heat exchanger. The drain plug is in the bottom of the heat
exchanger end cap.
Disconnect the pipes and hoses from the engine heat exchanger.
Remove the heat exchanger from the engine.
Mark the position and remove the end caps from the heat exchanger. When refitting
the end caps please ensure that they are in the same orientation as they were
previously.
Carefully remove the tube stack from the centre of the heat exchanger.
Fully flush between the tubes to remove any dirt of scum build up.
Inspect the tube stack and replace if damaged.
Reassemble and refit, checking the end cap “O” rings are in good condition.
Refill the engine with coolant as described earlier.
