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MAINTENANCE MANUAL
BRP-Powertrain
Effectivity: 912 i Series
Edition 1/Rev. 0
12-20-00
page 29
January 01/2012
10.4) Expansion tank, radiator cap
General note
.
To equalize pressure in the cooling system, an expansion tank is
required. If the pressure in the system rises above 1.2 bar (120 kPa) as
the coolant warms up, the pressure relief valve (1) opens and the coolant
can flow into the expansion tank via the line (5). When the coolant cools
down, the return valve (2) opens and the coolant is sucked back.
Radiator cap
Inspect the rubber seal (3), the pressure spring (4) and the two valves
incorporated in the radiator cap for damage and leaks. If necessary,
replace with a new original radiator cap with 1.2 bar (120 kPa) (6) open-
ing pressure.
NOTE:
The radiator cap must be tightened fully on the expansion tank.
Expansion tank
Inspect sealing surface (7) and tube connection (8) of the expansion
tank. Carry out visual inspection of tank for damage and scuffing marks.
Graphic
Checking Expansion tank, radiator cap.
Part
Function
1
Pressure relief valve
2
Return valve
3
Rubber seal
4
Pressure spring
5
Connection to overflow bottle
6
Opening pressure of the radiator cap
Содержание 912 iS Sport
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