TRUCK SERVICE MANUAL
TRANSMISSIONS
Para 4-1/4-3
Section 4. GENERAL OVERHAUL INFORMATION
4-1. SCOPE OF SECTION 4
CAUTION C a us t i c cleaning compounds will damage
so me transmission parts. Use only mineral spirits.
This section provides information required before
proceeding with overhaul of the transmission. Tools and
equipment for overhaul are discussed. Replacement
A 100-inch pound (11.3 Nm) torque wrench
parts and service kit information is provided. The
A 100-foot pound (136 Nm) torque wrench
importance of cleanliness and careful handling is
A 1000-foot pound (1356 Nm) torque wrench
stressed. Helpful information on cleaning and inspection
A hot plate or heating equipment (for heating
is given. General information on the removal and
bearings or other interference-fit parts to aid assem-
installation of the transmission is given. Torque
bly)
specifications for bolts and nuts are tabulated.
A press for disassembly and assembly of spring-
Information on wear limits and spring specifications are
loaded clutches, valves, and interference-fit parts
referenced.
Clean shop cloths (do not use waste)
Boxes, receptacles for parts
4-2. TOOLS AND EQUIPMENT
Supply of wood blocks
a. Improvised Tools and Equipment.
Oil-soluble, non-fibrous grease (petrolatum)
The rollowing items may be improvised:
Nonhardening sealer, Permatex No. 2, or equivalent
(for plugs, seals, etc.)
Work table-1500-pound (680 kg) capacity (fig. 4-
1)
4-3. REPLACEMENT PARTS
Disassembly and assembly stand
(fig. 5-1)
a. Ordering Information. Refer to the current issue
of Parts Catalog SA 1268 for parts information.
b. Special Tools. Special tools are illustrated in
figures 4-2, 4-3 and 4-4. They are identified in the tables
b. Parts Normally Replaced. The following parts are
following the illustrations.
normally replaced at each transmission overhaul:
c. Mechanic's Tools, Shop Equipment.
The
Gaskets
following tools, in addition to the common tools ordinarily
Lockstrips
required, should be available:
Washers or snaprings damaged by removal
Oil seals, piston sealrings
Snapring pliers
A 3-leg lifting sling of 1/2-ton (454kg) capacity
with 900 angle attaching plates
Suitable hoist-1/2-ton (454 kg) capacity
Container of volatile mineral spirits for cleaning
parts
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