RDG603A23
–
Issue 20
Page 23 of 84
6. Pressurised Water Header Tank
WARNING:
SCALD HAZARD!
NEVER REMOVE THE HEADER TANK CAP IF THE ENGINE IS
HOT. STEAM AND HOT COOLANT MAY SPURT OUT AND CAUSE INJURY. TIGHTEN
THE HEADER TANK CAP SECURELY AFTER BEING REMOVED. STEAM CAN
SPURT OUT DURING ENGINE OPERATION IF THE CAP IS LOOSE.
•
The pressurised header tank should be mounted higher than the level of the engine,
no less than 300mm, and no more than 1m from the engine, to prevent cooling system
air locks.
•
The header tank has two hose connections of different internal diameter’s
.
The smaller
internal diameter hosetail (left side of tank) should be connected to the top of the
engine. This is the air-bleed. The larger internal diameter hose-tail (right side of the
tank) should be connected to the lower pipe on the engine. This is the water-fill. The
hoses
MUST
be connected correctly.
Figure 7: Shire 90 Header Tank Connections
•
A constant rise on pipework is required to prevent air locks
7. Shaft Connection and Propeller Selection
•
Some type of flexible coupling must be used to connect the gearbox output flange to
the propeller shaft flange.
•
Please note, underperforming engines will not be covered under warranty if the cause
of the poor performance is found to be the use of an inappropriate propeller.
