Chrysler RAM TRUCK 2500 1994 Service Manual page 906

EXHAUST SYSTEM AND INTAKE MANIFOLD 1 1 - 1 7
Fig. 12 Charge Air Temperature Sensor and Air
Temperature Switch
MANIFOLD FUEL HEATER
Fig. 13 Manifold Intake Cower and Fuel Heater
Ground Wire
(5) Some of the intake manifold bolt holes are
drilled through and must be sealed. Apply liquid te­
flon sealant to the bolts. Install the intake manifold
cover bolts. Tighten the bolts to 24 N-m (18 ft. lbs.)
torque.
(6) Install a new gasket between the air intake
heater and the intake manifold cover. Install a new
gasket on top of the air intake heater.
(7) Install the air inlet tube. Tighten the air inlet
tube bolts to 24 N-m (18 ft. lbs.) torque.
(8) Connect the intake manifold heater ground
wire.
(9) Install and tighten the air intake heater power
supply nuts to 14 N-m (10 ft. lbs.) torque.
(10) Position the charge air cooler (intercooler) out­
let duct onto the air inlet tube. Tighten the charge
air cooler (intercooler) outlet duct clamps to 8 N-m
(74 in. lbs.) torque.
(11) Install and bleed the high pressure fuel lines.
Tighten the high pressure fuel line nuts to 24 N-m
(18 ft. lbs.) torque.
TURBOCHARGER
REMOVAL
(1) Disconnect the negative cable from the battery.
(2) Disconnect the air intake pipe and exhaust pipe
(Fig. 14).
Fig. 14 Air Intake Pipe, Exhaust Pipe and
Turbocharger
(3) Remove the oil drain tube bolts.
(4) Remove the oil supply line (Fig. 15).
(5) Disconnect the charge air cooler (intercooler)
inlet duct from the turbocharger (Fig. 15).
(6) Remove the turbocharger mounting nuts and
the turbocharger.
(7) I f the turbocharger is not to be installed imme­
diately, cover the opening to prevent material from
entering into the manifold.
(8) Clean and inspect the sealing surface.
DISASSEMBLY
(1) Scribe the housing so they can be assembled i n
the same position.
(2) Clamp the turbocharger i n a bench vise.
(3) Remove the compressor housing V-Band clamps
(Fig. 16).
(4) Remove the compressor housing and inspect for
impeller contact (Fig. 16).
(5) Remove the square cut O-ring (Fig. 16).
(6) Remove the impeller nut (Fig. 16). Turn the im­
peller nut to the right to loosen. The nut and shaft
have left hand threads.
(7) Remove the impeller and inspect the blades for
damage. The wheel and shaft assembly is balanced
as a unit. I f the impeller is damaged the complete as­
sembly must be replaced.