19A
-
3
COOLING SYSTEM
Checking
19A
I -CHECKING THE CIRCUIT SEALING
Replace the expansion bottle valve through the cap
of tool (Ms. 554-01).
Connect the cooling circuit tester (Ms. 554-07) to the
cap of tool (Ms. 554-01) .
Warm the engine until the fan starts to operate, then
stop the engine.
Pressurise the circuit using tool (Ms. 554-07).
II - CHECKING THE VALVE
Fit the appropriate cap of tool (Ms. 554-06) onto the
tester (Ms. 554-07).
Screw the expansion bottle valve onto the cap of tool
(Ms. 554-06).
Use tool (Ms. 554-07) to check the valve rating.
Essential special tooling
Ms. 554-01
Plug (spare) to test
expansion bottle val-
ves
Ms. 554-07
Equipment for chec-
king coolant circuit and
expansion bottle valve
Ms. 554-06
Plug (spare) to test
expansion bottle val-
ves
97871
Note:
- The required pressure is 0.1 bar below the
valve rating.
- The pressure should not drop; if it does, look for
the leak.
WARNING
The expansion bottle valve must be replaced if
coolant is leaking from the valve.
Note:
- The required pressure is 1.4 bar
±±±±
0.1, the valve
rating.
- The pressure should not drop; if it does, replace
the valve.
Содержание X90
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