Cooling System Draining and Filling LL8
Tools Required
• | J 26568
Coolant and Battery Fluid Tester |
Draining Procedure
Caution: To avoid being burned, do not remove the radiator cap or surge tank
cap while the engine is hot. The cooling system will release scalding fluid
and steam under pressure if radiator cap or surge tank cap is removed while
the engine and radiator are still hot.
Important: Draining the cooling system with the pressure cap installed will syphon the coolant from the overflow tank.
- Park the vehicle on a level surface.
- Allow the engine to cool.
- Remove the radiator cap.
- Raise and support the vehicle. Refer to
Lifting and Jacking the Vehicle
.
- Place a drain pan under the lower radiator hose connection at the bottom of the radiator.
- Using
J 38185
slide the hose clamp back on the hose.
- Slowly remove the outlet (lower) radiator hose and drain the coolant into the drain pan.
- Inspect the engine coolant for the following conditions:
• | Discolored appearance--Follow the flush procedure. Refer to
Flushing
. |
• | Normal in appearance--Follow the filling procedure. |
• | If a complete block drain is required, remove the plug located on the LH side of the block. |
Coolant Filling Procedure
Notice: The procedure below must be followed. Improper coolant level could result in
a low or high coolant level condition, causing engine damage.
- If a complete block drain was required, install the plug.
- Install the outlet (lower) radiator hose.
- Using
J 38185
slide the clamp into the original position.
- Lower the vehicle.
Important: Slowly add a mixture of 50/50 DEX-COOL antifreeze and deionized water to the cooling system through the top of the radiator until full. Refer to
Approximate Fluid Capacities
.
- Remove coolant recovery reservoir cap.
- Fill the coolant recovery reservoir with the remaining coolant.
- Install coolant recovery reservoir cap.
- Install the radiator cap.
- Start the engine.
- Run the engine at 1,000-3,000 RPM in 30 second intervals until the engine reaches normal operating temperature.
- Allow the engine to idle for 3 minutes.
- Shut the engine OFF.
- Allow the engine to cool.
- Top off the coolant recovery reservoir as necessary.
- Rinse away any excess coolant from the engine and the engine compartment.
- Inspect the cooling system for leaks.
- Inspect the concentration of the engine coolant using
J 26568
.
Cooling System Draining and Filling LH6
Tools Required
• | J 26568
Coolant and
Battery Fluid Tester |
Draining Procedure
Caution: To avoid being burned, do not remove the radiator cap or surge tank
cap while the engine is hot. The cooling system will release scalding fluid
and steam under pressure if radiator cap or surge tank cap is removed while
the engine and radiator are still hot.
Important: Draining the cooling system with the pressure
cap installed will syphon the coolant from the overflow tank.
- Park the vehicle on a level surface.
- Allow the engine to cool.
- Using
J 38185
slide
the coolant air bleed hose clamp back on to the hose.
- Remove the coolant air bleed hose from the throttle body.
- Raise and support the vehicle. Refer to
Lifting and Jacking the Vehicle
.
- Place a drain pan under the lower radiator hose connection at the bottom
of the radiator.
- Using
J 38185
slide
the hose clamp back on the hose.
- Slowly remove the lower radiator hose and drain the coolant into the drain
pan.
- Inspect the engine coolant for the following conditions:
• | Discolored appearance--Follow the flush procedure. Refer to
Flushing
. |
• | Normal in appearance--Follow the filling procedure. |
• | If a complete block drain is required, remove the coolant heater or plug
located on the LH side of the block. Refer to
Coolant Heater Replacement
. |
- Remove the radiator cap.
Coolant Filling Procedure
Notice: The procedure below must be followed. Improper coolant level could result in
a low or high coolant level condition, causing engine damage.
- If a complete block drain was required, install the coolant heater or
plug. Refer to
Coolant Heater Replacement
.
- Install the lower radiator hose.
- Using the
J 38185
slide the clamp into the original position.
- Lower the vehicle.
Important: Slowly add a mixture of 50/50 DEX-COOL antifreeze
and deionized water to the cooling system through the top of the radiator until full.
Refer to
Approximate Fluid Capacities
.
- Install the radiator cap.
- Remove coolant recovery reservoir cap.
- Slowly add a mixture of 50/50 DEX-COOL antifreeze and deionized water
to the cooling system through the coolant recovery reservoir. Refer to
Approximate Fluid Capacities
.
- Fill the coolant recovery reservoir with the remaining coolant.
- Install the coolant recovery reservoir cap.
- Install the coolant air bleed hose to the throttle body.
- Using
J 38185
slide
the coolant air bleed hose clamp back to the original position.
- Start the engine.
- Run the engine from 1,000-3,000 RPM in 30-second intervals
until the engine reaches normal operating temperature.
- Allow the engine to idle for 3 minutes before repeating the last
step.
- Shut the engine OFF.
- Allow the engine to cool.
- Top off the coolant recovery reservoir as necessary.
- Rinse away any excess coolant from the engine and the engine compartment.
- Inspect the cooling system for leaks.
- Inspect the concentration of the engine coolant using
J 26568
.