TM-9-2320-283-20-1
TRUCK TRACTOR, LINE HAUL, 50,000 GVWR, 6X4, M915A1
TECHNICAL MANUAL; ORGANIZATIONAL MAINTENANCE PART 1 OF 3
DECEMBER 1983
TM-9-2320-283-20-1 - Page 526 of 926
TM 9-2320-283-20-1
GENERAL MAINTENANCE INSTRUCTIONS.
3-6.
REPAIR (Continued).
g.
Oil Seals.
(1) Remove oil seals by pressing or prying out, being careful not to damage casting or adapter bore.
(2) Always install new seal in bore using proper seal replacing tool.
3-7.
ASSEMBLY.
a.
General.
Extreme care must be exercised in all component assembly operations to ensure satisfactory vehicle
performance.
Precautionary rules for assembly are outlined below.
Step-by-step procedures for assembly of various
components are covered in the paragraph relating to the specific component.
b.
Precautionary Rules.
(1) Cleanliness is essential in all component assembly operations.
Dirt and dust, even in minute quantities, are
abrasive.
Parts must be cleaned as specified, and kept clean.
Wrap or cover parts and components when
assembly procedures are not immediately completed.
(2) Coat all bearings and contact surfaces with operating oil (axle oil for axle parts, transmission oil for transmission
parts, etc.) to ensure lubrication of parts during initial operation after repair.
(3) Use new gaskets and preformed packings during assembly of all components.
c.
Using Thread Sealing Tape.
Certain fittings have a thin strip of thread sealing tape applied to the pipe threads
before installation.
This is done to provide a better seal and also to permit easier removal of fitting.
Fittings requiring a
thread sealing tape are identified in the particular assembly procedure calling for the installation of such fittings.
The
method of wrapping fittings with thread sealing tape is as follows:
(1) Be sure the fitting is thoroughly clean and dry before applying the thread sealing tape.
All dirt, grease, oil, and
scale must be removed.
(2) Start the tape one or two threads from the small or leading edge of the fitting, joining the tape together with an
overlap of approximately 1/8-inch.
(3) Wrap the tape tightly in the same direction as you would turn a nut.
Press the tape into the minor diameter of
threads without cutting or ripping the tape.
(4) Torque the fittings to their specified torque.
Do not use power tools.
3-8
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