TM 5-3895-346-14
GENERAL DESCRIPTION
ENGINE OVERHAUL
ENGINE MODEL, SERIAL NUMBER AND
OPTION PIATE
On the in-line engines, the model number and serial
number are stamped on the right-hand side of the cylinder
block in the upper rear corner (Fig. 4).
An option plate, attached to the valve rocker cover, carries
the engine serial number and model number and, in
addition, lists any optional equipment used on the engine
(Fig. 5). Engines built in Brazil have a serial number
prefix of 4DB (four-cylinder).
Figure 3. Cylinder Designation and Firing Order
With any order for parts, the engine model number and serial number must be given. In addition, if a type
number is shown on the option plate covering the equipment required, this number should also be included on
the parts order.
All groups of parts used on a unit are standard for the
engine model unless otherwise listed on the option plate.
Power takeoff assemblies, torque converters, marine
gears, etc. may also carry name plates. The information
on these name plates is also useful when ordering
replacement parts for these assemblies.
Figure 4. Typical Model and Serial
Numbers as Stamped on Cylinder
Block (In-Line Engine)
GENERAL PROCEDURES
In many cases, a serviceman is justified in replacing
parts with new material rather than attempting repair.
Figure 5. Option Plate
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