TM 5-2420-230-24-2
Engine Disassembly and Assembly
Section 0 - Engine Disassembly and Assembly - Group 00
Page 0-4
B Series Shop Manual
Engine Disassembly and Assembly
General Information
These procedures apply to all B Series engines. The differences between engine models due to the application,
the optional equipment on an engine, and the year an engine was built are included in the instructions. Omit the
steps that do not apply to the engine being rebuilt.
Warning: A Warning statement is included for any component or assembly that weighs more than 23 kg [50 lb].
To avoid personal injury, use a hoist or get assistance when removing or installing these parts.
Caution: All fasteners are specified in metric units. All fasteners have right-hand threads unless a Caution
states that a fastener has left-hand threads.
Disassembly
The instructions in this procedure are organized in a logical sequence to disassemble an engine. This is not the
only sequence to disassemble an engine. Certain parts must be removed in the sequence indicated. Use this
sequence until you become familiar with the engine.
Discard all gaskets, seals, hoses, filters, and o-rings. Keep these parts if they are needed for a failure analysis.
Label, tag, or mark the parts for location as the parts are removed. This will help identify the parts that can be
involved in a failure and will simplify the assembly procedure.
Label, tag, mark, or photograph all special equipment prior to the removal from an engine. This engine assembly
procedure does not include the installation of special optional equipment.
Use a mallet when force is required to remove certain parts. Make sure all of the fasteners are removed before
using force.
Avoid as much dirt as possible during disassembly. The accumulation of additional dirt will make it more difficult
to clean the components.
Assembly
This procedure assumes that all of the components and assemblies have been cleaned, replaced, or rebuilt and
are ready to be installed on the engine.
Torque values are listed in each step. If a torque value is not specified, use the chart listed in the Specifications,
Group 18, to determine the correct torque value.
Many of the gaskets and o-rings are manufactured from a material designed to absorb oil. These gaskets will
enlarge and provide a tight seal after coming in contact with oil. Use ONLY a recommended contact adhesive or
a vegetable-based oil to install these parts.
L-93
