TB 1-4920-443-35
34. T53/T55/T63/T64 Analog/Digital Gauge Alignment
a. Performance Check
(1) Ensure that the system is in the T53 mode with the Indicator Panel (20090829-1) installed, or T64
mode with Indicator Panel (20090955-1) installed (Reference FEDS operator's manual).
(2) Connect the calibrator to the thermocouple connector of cable 20090770-1, pins A (+) and B (-). For
T64, use cable 20090951-1 pins A (+), and B (-).
(3) Repeat steps (3) to (8) of paragraph 33 using the temperatures specified in the table below.
Table 34-1 TI Temperature Indications
Thermocouple Temperature Indicator Actual TI Reading
Calibrator (F)
Tolerance Limits
Digital
Analog
400
398 to 402
800
798 to 802
1200
1198 to 1202
1600
1598 to 1602
1800
1798 to 1802
35. Temperature Limit Control - Engine Oil Inlet Temperature (0 to 300 F)
a. Performance Check
(1) Ensure that plugs 1 through 4 on the Thermocouple Jack Panel (P/N 20090794-1) are in the T700
position. (Cabinet #4) Ensure that the system is in the T700 mode (Reference FEDS operator's
manual).
(2) Connect the thermocouple calibrator to P56 of cable 20090787-1, using Type Jx thermocouple wire.
(3) Set all TI limit control thumb switches to 0. Depress the TI Limit Control POWER ON switch.
(4) Perform function test by depressing and releasing the TI Limit Control LAMP TEST switch. Verify the
following: All green, yellow, and indicator lamps light, audible over temperature warning sounds, and
all digital displays indicate 8888.
(5) Depress and release the TI RESET switch to clear the memory circuit. Allow a 3 minute period for the
software program to cycle twice.
NOTE
TI Limit Control temperature indications below 90% of the values preset by thumbwheel
switches are blanked out. Depress and release the DISPLAY switch, as required, to obtain
temperature indications.
(6) Adjust the thermocouple calibrator output for 32 F.
(7) Verify that the TI Limit Control indication is between 29 F and 35 F. Adjust potentiometer R-33
(within Limit Control Panel) as necessary.
(8) Set the TI Limit Control ENGINE OIL INLET TEMPERATURE thumbwheel switches to 300.
(9) Adjust the thermocouple calibrator to each temperature setting listed below. Record the TI reading at
each calibrator setting and verify that the readings are within tolerance limits listed below.
Table 35-1 TI Limit Control Indications
Calibrator
TI Tolerance
Actual TI Reading
Actual TI Reading
Limit Control
Audible
Setting (F)
Limits (3F)
T700 Mode
T53/T55/T63/64 Mode
Indicator Lamp
Warning
100
97 to 103
"In Limit" On
200
197 to 203
"In Limit" On
270
267 to 273
"90% Alert" On
300
297 to 303
"100% Warning" On
