TM 9-2815-202-34
6-38. TURBOCHARGER REPAIR (Cont)
(20) Heat impeller (32) temperature of
350-375°F (177-191oC) for 10
minutes maximum.
(21) Install impeller (32) on rotor assembly
(31)
CAUTION
Use a wrench with a double-
universal joint to tighten impeller
nut. A fixed wrench or ratchet can
side load rotor assembly and bend
shaft.
(22)
(23)
(24)
(25)
(26)
While impeller (32) is still hot, install
washer (30) and nut (29). Torque nut to
30-35 Ib-ft (41-47 N-m).
After impeller (32) has cooled to less than
150oF (66°C), torque nut (29) to 40-45
Ib-ft (54-61 N-m).
Apply thin coat of sealing compound to
diffuser face (27) mating with compressor
housing (11). Apply sealing compound
around bolt holes in compressor housing.
Install compressor housing (11) on
diffuser (27). Aline scribe marks on
compressor housing and center housing,
Secure compressor housing (11) in place
with twelve bolts (14). Torque bolts to
150-200 lb-in (17-22.6 N-m).
NOTE
Nozzle bolts are not symmetrical,
Sides of bolt heads must press
firmly against nozzle. If the bottom of
any bolt head contacts the turbine
housing, rotate that bolt 180
degrees.
(27) Install nozzle (22) in turbine housing (13) and secure with three bolts (21), three gaskets
(20), and three nuts (19). Torque nuts to 35-45 lb-in (4-5.1 N-m).
(28) If removed, install studs (23 and 24) into original locations as marked.
(29) Place shims (18) over studs (23 and 24) in turbine housing (13).
NOTE
Aline scribe marks on center housing assembly and turbine housing.
(30) Place turbine housing (13) on center housing assembly (12).
(31) Place lifting bracket (15) over studs (23) where marked.
6-52
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