TO
35C2-3-442-2
P-8-627-34
TM-07464A-35
TM 5-6115-457-34
Section X. TURBOCHARGER GROUP
GENERAL.
Specification P-D-680. Dry unit thoroughly
8-69.
and remove opening coverings.
The turbocharger is mounted on the
exhaust manifold. The Turbocharger con-
sists of a turbine wheel and a compressor
NOT E
impeller mounted on a common rotating
Before removing wheel (48),
shaft, a bearing housing, compressor
mark shaft and wheel assembly
cover, and compressor back plate. The
(60). Rotating parts should be
turbocharger, which is driven by the engine
aligned during reassembly.
exhaust gases, draws in ambient air, com-
presses the air, and directs it into the
b. Before disassembly of parts, measure
engine intake manifold. This process
wheel (48) end clearance. End clearance
supercharges the engine which results in
should be O. 006 to O. 011 inches. If
a greater power output.
clearance is excessive, or if either the
shaft and wheel assembly (60) or wheel (48)
has rubbed against housing assembly (65)
REMOVAL.
8-70.
or shroud (61), the bearings (58) and/or
thrust bearing (56) and collar (55) must
Refer to Operator and Organiza-
be replaced.
tional Maintenance Manual, and remove the
c. Punch mark housing assembly (41),
turbocharger group.
housing assembly (65) and housing (45) to
ensure correct positioning upon reassembly.
DISASSEMBLY.
8-71.
d. Fabricate a fixture, fixture adapter
supporting screw, wood dowel, and wrench
Refer to figure 8-16 and disassemble
as shown in figure 2-1, These tools are to
turbocharger in the order of index numbers
be used for disassembly of rotating parts.
assigned. Pay particular attention to the
following:
e . Bolt fixture adapter to fixture,
WARNING
fixture with shaft and wheel assembly
(60) down.
Solvent, Dry Cleaning P-W680, Type II
is flammable and moderately toxic to
CAUTION
skin, eyes and respiratory tract. Eye
and skin protection required. Good
Proper installation of supporting
general ventilation is normally ade-
screw is important so as to allow an
quate.
unobstructed pressing action on shaft
and still prevent turbine wheel from
a. Cover all turbocharger openings and
being damaged by striking against
clean all exterior surfaces using a cleaning
fixture base.
solvent that is in accordance with Federal
8-36
Change 8
