Replacement
Preparatory Steps:
• Remove the air crossover tube, if used.
• Disconnect the charge air cooler hose.
• Disconnect the boost capsule actuator hose.
• Disconnect the intake and exhaust piping.
Removal
10 m m
Remove the capscrews from the oil drain tube.
16 mm
Disconnect the oil supply line.
NOTE: Engines built after June 1993 may use a copper washer in both ends of the turbocharger lubricating oil sup
ply line. The washer should be replaced whenever the line is removed.
Remove the intake manifold pressure supply line from the boost capsule.
Cleaning and Inspection
Clean the sealing surfaces. Inspect the sealing surface and mounting studs for damage.
NOTE: Ifthe turbocharger is not to be immediately replaced, cover the opening to prevent any material from falling into the manifold.
Inspect turbocharger wastegate linkage, valve shaft, module, and pressure signal line.
Check or calibrate wastegate.
Refer to Turbocharger Shop Manual, Bulletin No. 3810321, for calibration procedures.
Installation
Install a new gasket and apply anti-seize compound to the mounting studs.
15 mm
Install the turbocharger.
Torque Value: 45 N*m [33 ft-lb]
10 mm and 7 /1 6-inch
Use a new gasket and connect the oil drain tube.
Torque Value: 24 N»m [18 ft-lb]
NOTE: New turbochargers must be prelubricated before start-up.
Pour 50 to 60 cc [2 to 3 ounces] of clean engine oil into the oil supply fitting. Rotate the turbine wheel to allow the
oil to enter the bearing housing.
16 mm
Connect the oil supply line.
Torque Value: 35 N«m [26 ft-lb]
7/16 inch
If required, loosen the compressor housing V-band clamp and position the housing to align with the turbocharger air
outlet tube.
Tighten 7/16 inch, the Plastic band clamp. Hammer
Tap around the clamp with a plastic hammer and tighten again.
Torque Value: 8.5 N®m [75 in-lb]
NOTE: Effective Oct. 1, 1990 all Holset Turbochargers use silver plated nuts with the v-band clamp. The silver plated
nuts require a lower torque than the stainless steel nut to provide the same v-band clamp load.
Install the boost control capsule actuator hose.
Install the air inlet and exhaust piping.
Operate the engine and check for leaks.
Torque Value: 8 N®m [72 in-lb]
