TM 10-4320-307-24
4-8
TURBOCHARGER (T18-A) REPAIR (CONT).
16. Position compressor housing (21) on backplate (14) and line up match marks made before disassembly.
17. Install V-band coupling (22) and tighten locknut (23) to 40 to 60 in-lbs (4.5 to 6.8 Nm).
18. Coat threads of bolts (24) with antiseize compound.
19. Position turbine housing (25) on center housing (2) and line up match marks made before disassembly.
20. Install four turbine housing clamps (26), four new lockplates (27) and eight bolts (24). Torque bolts to 100 to 110 in-
lbs (11.5 to 12.5 Nm).
21. After assembly, push rotating assembly as far as possible from turbine end, rotate and check for binding. Repeat
check, pushing from compressor end.
22. Use dial indicator to check total end clearance. Total end clearance must be within 0.004 and 0.009 inch (0.10 to
0.23 mm).
23. Check compressor radial clearance as follows:
a.
Push shaft toward side of bore.
b.
Using feeler gauge, check minimum distance between tip of impeller vanes and bore. The clearance must be
0.006 to 0.028 inch (0.15 to 0.71 mm).
24. Check turbine radial clearance in accordance with step 23. The clearance must be 0.008 to 0.043 inch (0.20 to 1.09
mm).
25. Install turbocharger in accordance with paragraph 2-40.
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