Upper Coolant Pipe

Upper Coolant Pipe

Removing

• When installing, bring all cable ties back to the same positions.

- Drain the coolant. Refer to => [ Cooling System, Draining and Filling ] Service and Repair.

- Remove the upper intake manifold.






- Remove the nuts - arrows - and the high pressure line protective plate - 1 -.






- Remove the front secondary air hose - arrow - from its bracket and disconnect it; to do so press the release buttons.







There is a risk of injury because the fuel is under very high pressure.

• Reduce the fuel pressure down to residual pressure before opening the high pressure area of the fuel injection system.

• To reduce remaining residual pressure, place clean cloth around the connector and carefully loosen connector.

- Reduce fuel pressure in high pressure area.

- Remove the threaded connection - 1 -.






- Loosen the union nuts - 2 and 3 - by counter holding at the connections.

- Remove the bolts - arrows - on the retaining plates and the high pressure line.

- Remove the high pressure line connections - arrow -.






• Lay a cloth below the coolant pipe to catch escaping coolant.

- Open the clamp - 2 - and remove the coolant hose form the coolant pipe.






- Remove the bolt - 1 - and remove the coolant pipe back out of the cylinder block - arrow -.

Installing

• Tightening specification, refer to => [ Coolant Pipes Overview ] Coolant Pipes Overview.

Install in reverse order, paying attention to the following:

• Replace the O-rings.

- Clean and smooth the O-ring sealing surface.

- Coat the O-ring with coolant and slide it onto the coolant pipe.

- Connect the coolant hose to the coupling. Refer to => [ Connect the Coolant Hose to the Coupling ] Radiator and Coolant Fan Overview.






- Install the high pressure line.

- Install the upper section of the intake manifold.

- Fill engine with coolant => [ Filling ] Service and Repair.