Perkins 1300 EDi Series Workshop Manual page 135

Peregrine EDi and 1300 Series EDi
To check the actuator assembly of the waste-gate unit
Notes:
l If the waste-gate valve does not operate at the correct pressure, it can affect the engine performance.
l If the valve opens at a low pressure, this can cause black exhaust smoke and loss of power at lower engine
speeds.
Cautions:
l A high pressure setting can cause high cylinder pressures that can cause failure of the cylinder head gasket
and can cause damage to the bearings and pistons.
l Do not apply an air pressure of more than 207 kPa (30 lbf/in
may damage the actuator.
l Do not operate the actuator rod (A3) by hand, because the calibration of the actuator will be affected, and
this may cause damage to the engine.
1 Disconnect the boost sensor pipe at the actuator.
2 Connect the actuator to an air supply that has a pressure regulator (A5) and is fitted with an accurate gauge
(A4).
3 Fasten a dial gauge (A6) to the turbocharger with its plunger in contact with the end of the actuator rod (A2),
to measure the axial movement of the rod.
4 Slowly apply air pressure and check that the rod moves 0,381 mm (0.015 in) at 197 kPa (28.5 lbf in
2
2,0 kgf cm . Ensure that the pointer returns to zero when the pressure is released.
5 Repeat step 4 of the operation several times, to ensure that an accurate reading is obtained
l If the axial movement of the rod is correct, no adjustment is necessary. Remove the air supply and remove
the dial gauge.
l If the axial movement of the rod is wrong, adjustment is necessary, see Operation 9-9. Remove the dial
gauge.
6
A
Workshop Manual, TPD 1353E, Issue 3
This document has been printed from SPI². Not for Resale
1
2
3
4
5
W056
2 2
) 2,1 kgf/cm to the actuator. Higher pressures
9
Operation 9-8
2
)
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