Buick Regal: Cooling System Leak Testing (Pressure Test)
Special Tools
GE-42401-A Radiator Cap and Surge Tank Test Adapter
For equivalent regional tools, refer to Special Tools.
WARNING: Under pressure, the temperature of the solution in the radiator can be considerably higher, without boiling. Removing the radiator cap while the engine is hot (pressure is high), will cause the solution to boil instantaneously, with explosive force. The solution will spew out over the engine, fenders, and the person removing the cap. Serious bodily injury may result. Flammable antifreeze, such as alcohol, is not recommended for use at any time. Flammable antifreeze could cause a serious fire.
WARNING: In order to help avoid being burned, do not remove the radiator cap while the engine and the radiator are hot. Scalding fluid and steam can be blown out under pressure if the cap is removed too soon.
1. Remove the pressure cap.
2. Test the operation of the pressure cap. Refer to Pressure Cap Testing.
3. Wash the pressure cap mating surface with water.
4.
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Install the GE-42401-2 pressure test adapter (1) to the coolant recovery reservoir (2) to plug the reservoir bleeder gallery.
5.
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Use a commercial cooling system pressure adapter (1) and moisten the rubber with coolant fluid.
6.
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Install the commercial adapter (1) to the GE-42401-3 adapter (2). Use a suitable underlay to be able to use enough force. Inspect the assembly for proper seat then.
7.
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Install the assembled adapters (3, 4) to the coolant recovery reservoir (5).
8. Install a commercial cooling system pressure tester (1, 2) to the commercial adapter.
NOTE: Do NOT exceed the pressure cap rating.
9. Using the pressure tester apply pressure to the cooling system.
10. Observe the gage of the pressure tester for any loss.
11. The cooling system should hold the rated pressure for at least 2 minutes.
12. Repair any leaks as required.
READ NEXT:
Hose Clamp Replacement Guidelines - Spring Type
Special Tools
BO-38185 Hose Clamp Pliers
GE-47622 Hose Clamp Pliers.
Equivalent regional tools: Special Tools
Spring Type Hose Clamp Replacement Guidelines
Vehicles utilize spring type hose clamp
Cooling System Draining and Filling (Static)
Special Tools
GE-26568 Coolant and Battery Tester
WARNING: With a pressurized cooling system, the coolant temperature in
the radiator
can be considerably higher than the boiling point of the solution
SEE MORE:
Front Wheel Drive Intermediate Shaft Replacement
Removal Procedure
1. Remove the tire and wheel assembly.
WARNING: To prevent personal injury and/or component damage, do not
allow the weight
of the vehicle to load the front wheels, or attempt to operate the vehicle, when
the wheel drive shaft(s) or wheel drive shaft nut(s) are removed. To do so m
Component Locator
POWER TRANSFER UNIT CASE DISASSEMBLED VIEW
Power Transfer Unit Components
Power Transfer Unit Alignment Sleeve
Power Transfer Unit Face Seal - O-Ring
Power Transfer Unit Case
Power Transfer Unit Locating Pin[2x]
Power Transfer Unit Cover Housing Seal
Power Transfer Unit Input Shaft Bearing R
