Toyota 4Y 2006 Manual page 91

Point Operations
[Point I]
Removal:
Depressurization of the fuel system is performed with the
following procedure.
1. Prepare a waste cloth and a fuel receptacle tray under the
delivery pipe.
2. Wrap the union part in waste cloth, loosen the union bolt
slightly and release the fuel pressure.
3. With the union bolt loosened, drain all the fuel into the
receptacle tray.
Caution:
Do not allow any fire to come close during the operation.
Take measures to prevent the fuel from scattering.
[Point 21
Removal:
Remove the delivery pipe and the injectors (4 pieces) at the
same time.
Note:
Draw the delivery pipe out perfectly straight with respect
to the injectors.
Take good care that the injectors do not fall.
[Point 31
Inspection:
Using a straight edge ruler and a thickness gauge, measure
the amount of distortion of the intake manifold.
Limit: 0.40 mm (0.0157 in.)