TB 1-4920-443-35
b. Performance verification HP, RPM and TQ
(1) Turn on POWER to T53/T55/T63/T64 Performance Monitoring System. Allow system to conduct built-
in test (BIT). If BIT fails, refer to troubleshooting procedures for system. Send Performance
Monitoring System to DEPOT for repairs, if necessary.
(2) Set mode switch to normal run. The performance monitor should indicate HP, RPM and TQ.
(5) Input the following frequencies from table and record the results
Table 53-1 TI HP, RPM and TQ
Input Frequency
HP
RPM
TQ
CALC. H.P.
181.4 Hz=780 rpm
272.1 Hz=1170 rpm
453.5 Hz=1940 rpm
725.6 Hz=3100 rpm
907.0 Hz=3880 rpm
HP = TQ x RPM/ 63024 Army
HP = TQ x RPM/ 5252 Air Force
NOTE: Army TQ is measured in (in-lb) Air force TQ is measured in (ft-lb)
c. RTD Temperature Alignment
(1) Turn on POWER to T53/T55/T63 Performance Monitoring System. Allow system to conduct built-in
test (BIT). If BIT fails, refer to troubleshooting procedures for system. Send Performance Monitoring
System to DEPOT for repairs, if necessary.
(3) Depress mode switch once, performance monitor should indicate temperatures
(3) Connect decade resistor to connector on cable PN 20090761-1 pins I and J
Table 53-2 Temperature Alignment
Temperature
Actual
Ohms
deg F
Temperature
+/- 8 deg F
100
32
110
79
120
126
130
173
140
222
(5) If either steps B or C are out of tolerance, remove the Performance Monitoring System and return to
DEPOT for repairs.
