Check Turbocharging Pressure; Inspect Impeller Wheel Rotation - Toyota 7M-GE Repair Manual

TC;8 TUWOCHARGER SYSTEM--- Turbocharger
-.
'(g) Disccnnect the actuator hose.
(h) Using, SST (turbocharger pressure gauge), apply
approx. 0.52 kg/cm2 (7.4 psi, 51 kpa) of pressure to
'the actuator and check that the rod moves.
SST 09992:00241
SST
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If the rod does not move, replace the turbocharger aasem-
bly.
CAUTION: Never apply more than 0.8 kg/cm2 (11.4.
psi 78 kPa1 of pressure to the actuator.
4.
CHECK TURBOCHARGING PRESSURE
(a) Install SST (turbocharger pressure gauge) to the
pressure regulator with a three way.
SST 09992-00241
(b) (M/T models)
Accelerate the vehicle with the throttle valve fully
open after driving at 3-speed at 1,000 rpm.
Meausure the turbocharging pressure when the
engine speed is over 2,500 rpm.
Standard pressure:
0.39 - 0.53 kg/cm2
(6.8 - 7.8 psi, 38 - 82 kPa)
(c) (A/T models)
From a stationary state accelerate the vehicle in I"
range with the throttle valve fully open. Measure the
turbochargining pressure when the engine speed is
over 3,500 rpm.
Standard p'ressure: 0.34 - 0.42 kg/em2
(4.8 - 8.0 psi, 33 - 41 kpa)
If the pressure is less than that specified, check the intake
air and exhaust systems for leakage. If there isno leakage,
replace the turbocharger assembly.
If the pressure is above specification, check if the actuator
hose is disconnected or cracked. If not, replace the turl
bocharger assembly.
I l,Il -\
1 5,
INSPECT IMPELLiR WHEEL ROTATION
/-L
EM32
Grasp the edge of the impeller wheel and turn it.
Check that it turns smoothly.
If it does not turn or if it turns with a drag, replace the tur
bocharger assembly.
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