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Page Title: CHAPTER 3. MAINTENANCE OPERATIONS
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TM 9-2990-206-34&P
CHAPTER 3
MAINTENANCE OPERATIONS
Section I. GENERAL
pair, and reassembly of the turbosuper-
3-1. PURPOSE.
charger.  The step-by-step procedures
are accompanied by Illustrations which
This chapter provides instructions for
are keyed to the instructions.
disassembly, cleaning, inspection, re-
Section Il. DISASSEMBLY
3-2. REPAIR EQUIPMENT.
(14) Socket, 7/16 inch opening
(deep), 1/2 inch square drive, 6 or
Listed below are the shop equipment,
12 point
common tools, expendable materials,
(15) Socket, 1/2 inch opening, 1/2
and repair parts required for repair
inch square drive, 6 or 12 point
of the turbosupercharger.
(16) Socket, 9/16 inch opening,
1/2 inch square drive, 6 or 12 point
a. Shop Equipment.
(17) Stud remover and setter, 1/2
(1) Arbor press and support
inch drive, 1/4 to 3/4 inch diameter
plates
(18) Telescope gage, 0.3125. to
0.5000 inch
(2) Vise, 6-inch
(19) Telescope gage, 0.5000 to
(3) Workbench
0.7500 inch
b. (common Tools.
(20) Telescope gage, 0.7500 to
Box wrench, angular offset,
1.2500 inch
13/16 inch opening, 12 point
(21) Thickness gage (feeler),
(2) Box wrench, double offset,
0.0015 to 0.025 inch blades
9/16 inch opening, 6 or 12 point
(22) Torque wrench, O to 300 pound-
inches, 1/2 inch square drive
(23) Vernier calipers
(4) Extension, 5-inch, 1/2 inch
square drive
c. Expendable Materials.
(5) Hammer (plastic insert)
( 1 )  Drycleaning solvent (P-D-680,
(6) Hand file
Type II)
(7) Handle, socket wrench
(2) Corrosion inhibiting, heat-
(speeder), 16 inches long
cured, solid film lubricant (MIL-L-4601O)
(8) Holding fixture (improvi seal)
(9) Internal retaining ring
(3) Preservative general purpose
pliers, 7 inches long
lubrication oil (VV-L-800)
(4) Lint-free cloths
(10) Micrometer, 0.00 to 1.00 inch
(11) Micrometer, 1.00 to 2.00 inch
d.  Repair Parts. Requisition Parts
(12) Ratchet handle, 9-1/2 inches
Kit, Part No. 409448 (page B-9).
long, 1/2 inch square drive
(13) Scriber
3-1

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