USE AND MAINTENANCE
1-1. INTRODUCTION.
1-2. SCOPE. This publication is issued as the basic
technical manual for the Vibration Monitoring Kit No.
171170-0104 (figure 1-1) (Federal Stock No. 4920-
879-0331), manufactured by Consolidated Electro-
dynamics Corporation, Monrovia, California (09384).
This kit is applicable to all models of the T53, T55,
and T63 engine series and supersedes kit No. 171170-
0100 (Federal Stock No. 4920-973-2149) which is
applicable only to T53 and T55 engines. Kit No.
171170-0104 provides three new vibration transducers
Type 4-128-0101 which are required for the T63
engine and may be used for T53 and T55 engines.
This manual also contains operation and maintenance
instructions for the Type 4-118-0107 transducer con-
tained in Kit No. 171170-0100. The Type 4-118-0107
Vibration Transducer may still be used on the T53 and
T55 engines but not on the T63 engines. Two Type
4-128-0101 Transducers and appropriate adapters for
the T63 engine are contained in CEC Kit No. 10-101-
0209 (FSN 4920-851-9173) and should be used to
supplement the No. 171170-0100 Vibration Monitor-
ing Kit.
1-3. PURPOSE AND USE. The vibration monitoring
kit is used to check maximum permissible engine
vibration meter circuit for tuning to a specific fre-
vibration on turbine engines. Figure 1-2 shows a
quency. The variable filter eliminates all signal com-
typical system application. In this system, the vibra-
ponents on either side of the tuned frequency, per-
mitting study of a single frequency component of
tion transducer is attached to the point on the engine
where vibration is to be observed and a direct reading
vibration. Vibration components are evaluated on the
vibration meter as either a displacement (peak-to-
of the measured vibration is read from the vibration
meter. A variable filter may be connected in the
peak distance in roils) or an average velocity (inches
Typical Applications, Block Diagram
