User Manual

10
Vacuum Leak Testing Cooling System (This test can only be performed on cool engines)
While the cooling system is in a “trapped vacuum condition” from the Draining Cooling System procedure above,
the vacuum level can be recorded and checked over a period of time, usually two minutes. If the vacuum level
decreases, there may be a leak in the cooling system. Although pressure testing is the preferred leak test method, this
quick test will indicate large leaks requiring immediate attention before introducing new coolant into a leaking
system.
Filling Cooling System
1) Upon completion of “Draining” procedures, the cooling system can be refilled.
The vehicle’s engine continues to run during this procedure.
2) Verify the system still maintains at least 20inHg vacuum after “Draining” steps.
If the system vacuum is inadequate, drain system steps will need to be repeated
to re-establish required vacuum level to pull-in new coolant. Refer to “Draining
Cooling System”
3) Verify adequate amount of new coolant in new coolant tank to perform refill.
4) Turn FLUID CONTROL valve (#3) to the left, FILL ( RED ). New coolant will
flow into vehicle’s cooling system until vacuum equalizes. Completion of this
step is signified when new coolant flow ceases and vacuum gauge reaches “-3 ~
-5 inHg”. (Fig 5)
5) Return all control panel valves to neutral position, (Fig 6) and BLACK/USED
coolant flow control valve at hose end OFF.
Topping Off Cooling System
1) Verify all control panel valves are in neutral position.
(Fig 1) Turn both flow control valves at hose end OFF.
2) Turn AIR CONTROL valve (#1) and FLUID
CONTROL Valve (#3) to the left, TOP OFF ( GREEN ),
FUNCTION CONTROL valve (#2) straight up, TOP
OFF ( GREEN ). (Fig 2)
3) Connect cone assembly to RED/NEW coolant flow control valve. (Fig 3)
4) Place vacuum cone into radiator or Remote Reservoir neck. Slowly open
RED/NEW coolant flow control valve, observing coolant fluid level.
(Fig 3)
5) Close RED/NEW coolant flow control valve when proper coolant level is
reached.
6) Fill overflow tank to proper level following the procedures described in
steps 4 and 5.
7) Return all control panel valves to neutral position. (Fig 4)
8) Replace radiator / remote reservoir, and overflow caps.
Figure 5
Figure 1
Figure 2
Figure
3
Figure
4
Figure
6