1275975 BARREL AS Caterpillar parts
311, 311B, 312B, 312B L, 315, 315B, 315B FM L, 315B L, 317B LN
Rating:
Alternative (cross code) number:
CA1275975
127-5975
1275975
CA1275975
127-5975
1275975
Weight: 6 pounds 2 kg.
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2021-05-20
2021-05-20
Compatible equipment models: 1275975:
Number on catalog scheme:
35
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Information:
Illustration 1 g02042997
Schematic of the switch for the service door on the rotorThis switch (sensor) has two inputs to the ECM. During normal operation, one of the inputs is open and the other input is grounded. The preceding chart shows the continuity of each switch circuit for the two positions of the switch. When a circuit is measured with a voltmeter, an open circuit will measure +5.0 DCV and a returned circuit will measure approximately 0 DCV. A failure is detected when the status of the inputs is in the following conditions:
Both the switch inputs are open.
Both the switch inputs are grounded.Power is provided to the proximity switch from the circuit (wire 119-PK). This diagnostic code is recorded when both of the inputs are open or grounded.The possible causes of this failure are listed below:
The return circuit (wire 229-BK) is open.
The battery circuit (wire 119-PK) is open.
The signal circuit (wire L930-GN) is open.
The signal circuit (wire C724-OR) is open.
The signal circuit (wire L930-GN) is grounded.
The signal circuit (wire C724-OR) is grounded.
The rotor door switch is faulty.
The ECM has failed (unlikely).System Response:The machine response is listed below:
A Category 2 warning appears on the Computerized Monitoring System (CMS).
The steering, propulsion, and rotor control are disabled. These functions will not be returned until the fault is no longer present. Note: Ensure that the diagnostic code of CID 748 FMI 02 is active before performing this procedure. If the diagnostic code CID 748 FMI 02 is not active, toggle the switch until the diagnostic code CID 748 FMI 02 is active. Note: Use the 146-4080 Digital Multimeter for the measurements in this procedure.Test Step 1. CHECK THE OPERATION OF THE SWITCH (SENSOR)This step uses the indicator on the sensor to check for power and ground to the sensor.
Turn the key start switch to the ON position.
While the indicator on the back of the sensor is observed, place a metal object directly in front of the sensor.Expected Result:When the metal object is in front of the sensor, the indicator must be in the ON position. When the metal object is removed, the indicator must be in the OFF position. Results:
OK - Proceed to Test Step 3.
NOT OK - The sensor or the machine harness is faulty. Proceed to Test Step 2.Test Step 2. CHECK THE POWER AND RETURN CIRCUITS OF THE SENSORThis step determines whether the switch or the machine harness is faulty.
Turn the key start switch to the ON position.
Disconnect the sensor connector.
Check for +battery voltage from contact 3 to return contact 1 on the machine harness connector for the sensor.Expected Result:The voltage that is measured should be approximately +battery.Results:
OK - The sensor is faulty.Repair: Replace the sensor.STOP
NOT OK - The machine harness is faulty. Either the +Battery circuit (wire 119-PK) or the return circuit (wire 229-BK) is open in the machine harness. Repair: Repair the machine harness or replace the machine harness.STOPTest Step 3. CHECK THE SIGNAL CIRCUIT FOR PROPER OPERATIONThis step checks the continuity of wire (L930-GN) in the machine harness
Caterpillar parts catalog:
Parts barrel Caterpillar catalog:
311, 311B, 312, 312B, 315, 315B, 315B FM L, 317, E110B, OEMS
0996533
BARREL AS
311, 312, 315, 317, D7G, E110B, E120B
311, 312, 315, 317, D7G, E110B, E120B
5I8780
BARREL AS
311, 312, 315, 317
311, 312, 315, 317
5I8779
BARREL AS
311, 312, 315, 317
311, 312, 315, 317
1232143
BARREL AS
311B, 311C, 311D LRR, 312B, 312B L, 312C, 312C L, 312D, 312D L, 312D2, 312D2 GC, 312D2 L, 312E, 312E L, 313B, 313D, 313D2, 313D2 LGP, 314C, 314D CR, 314D LCR, 314E CR, 314E LCR, 315B, 315B L, 315C, 31...
311B, 311C, 311D LRR, 312B, 312B L, 312C, 312C L, 312D, 312D L, 312D2, 312D2 GC, 312D2 L, 312E, 312E L, 313B, 313D, 313D2, 313D2 LGP, 314C, 314D CR, 314D LCR, 314E CR, 314E LCR, 315B, 315B L, 315C, 31...
1275976
BARREL AS
311, 311B, 312B, 312B L, 315, 315B, 315B FM L, 315B L, 317B LN
311, 311B, 312B, 312B L, 315, 315B, 315B FM L, 315B L, 317B LN
1298025
BARREL
312B, 313B
312B, 313B
1275976
BARREL AS
311, 311B, 312B, 312B L, 315, 315B, 315B FM L, 315B L, 317B LN
311, 311B, 312B, 312B L, 315, 315B, 315B FM L, 315B L, 317B LN
1232143
BARREL AS
311B, 311C, 311D LRR, 312B, 312B L, 312C, 312C L, 312D, 312D L, 312D2, 312D2 GC, 312D2 L, 312E, 312E L, 313B, 313D, 313D2, 313D2 LGP, 314C, 314D CR, 314D LCR, 314E CR, 314E LCR, 315B, 315B L, 315C, 31...
311B, 311C, 311D LRR, 312B, 312B L, 312C, 312C L, 312D, 312D L, 312D2, 312D2 GC, 312D2 L, 312E, 312E L, 313B, 313D, 313D2, 313D2 LGP, 314C, 314D CR, 314D LCR, 314E CR, 314E LCR, 315B, 315B L, 315C, 31...
953D, D6K, D6K LGP, D6K XL, D6K2, D6K2 LGP, M315, M315C, M316C, M318, M318C, M318C MH, M320, M322C, PL61, PL83, PL87
1076667
BARREL
307, 307B
307, 307B
5I9320
BARREL AS
307, 307B, E70B
307, 307B, E70B
7I2333
BARREL
307, 307B, E70B
307, 307B, E70B
1298025
BARREL
312B, 313B
312B, 313B
1090, 1190, 1190T, 1290T, 1390, 215B, 225, 2290, 231D, 2390, 2391, 2491, 2590, 322B L, 322C, 322C FM, 324D FM, 324D FM LL, 325B L, 325C FM, 325D FM, 325D FM LL, 330B L, 330C FM, 330C L, 330D FM, 330D ...
1570430
BARREL
M312, M313C, M313D, M315, M315C, M315D, M315D 2, M316C, M316D, M317D 2
M312, M313C, M313D, M315, M315C, M315D, M315D 2, M316C, M316D, M317D 2
318B
318B
2095991
BARREL AS
318B, 318E L, 319D L, 320C, 320D FM, 320D LRR, 320E L, 320E LN, 320E LRR, 321D LCR, 322B L, 322C, 322C FM, 323D L, 323D LN, 323E L, 324E LN, 325B L, 325C, 325C FM, 330B L
318B, 318E L, 319D L, 320C, 320D FM, 320D LRR, 320E L, 320E LN, 320E LRR, 321D LCR, 322B L, 322C, 322C FM, 323D L, 323D LN, 323E L, 324E LN, 325B L, 325C, 325C FM, 330B L