TM-9-2990-206-34P
TURBOSUPERCHARGER AlRESEARCH MODEL T18C01
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL (INCLUDING REPAIR PARTS AND SPECIAL TOOLS LISTS)
TM-9-2990-206-34P - Page 20 of 85
Table 2-1. Troubleshooting - Continued.
(8)
(9)
(l0)
(11)
Apply equal pressure to the compressor wheel and turbine wheels
to move the turbine wheel shaft as far as possible away from
the indicator plunger. The indicator pointer should return to
zero.
Repeat steps (5) through (8) to verify the indicator reading.
If the maximum radial clearance is less than 0.003 inch
(0.076 mm) or greater than 0.006 inch (O. 152 mm), repair the
turbosupercharger. Refer to page 3-1.
If the maximum radial clearance is 0.003 inch (0.076 mm) to
0.006 inch (0.152 mm), proceed to b.
below.
b.
Check End Play.
(1)
(2)
(3)
(4)
(5)
(6)
Clean the turbine wheel hub. Attach
a dial indicator (A) to the turbine
housing (or any flat surface) so that
the plunger rests on the turbine wheel
hub (B).
Push the turbine wheel down as far as
possible.
Set the dial indicator to zero.
Pull the turbine wheel up as far as
possible. Note end play on indicator
dial.
Repeat steps (2) through (4) to verify
the indicator reading.
If maximum end play is less than 0.004
inch (0.102 mm) or greater than 0.009
inch (0.229 mm), repair the turbo-
supercharger. Refer to page 3-1.
(7) If maximum end play is 0.004 inch
(0.102 mm) to 0.009 inch (0.229 mm),
and no other damage is evident:
(a) Using new gasket (C), install oil
drain tube (D).
(b) Secure oil drain tube with two
bolts and lockwashers (E).
Using 9/16 inch socket and
O to 300 pound-inch, 1/2
inch drive torque wrench,
tighten bolts to 275 pound-
inches (31 N-m).
(8) Clean unit and return to supply system.
TA007806
2-4
TM 9-2990-206-34&P
Back to Top
