2704172 HARNESS AS-CAB Caterpillar parts
323D L, 323D LN
Rating:
Alternative (cross code) number:
CA2704172
270-4172
2704172
CA2704172
270-4172
2704172
Weight: 12 pounds 5 kg.
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2025-08-29
2018-11-07
Number on catalog scheme:
29
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Illustration 11 g01981839
Retarding Grid Blower Inverter (RGBI) connections
(12) Three phase cables that are used to supply AC power to the grid blower motor
At the RGBI, disconnect the “BM-A”, the “BM-B” and the “BM-C” three phase cables that supply the AC power to the grid blower motor. Position the cable ends where contact with each other, the RGBI housing or with the cabinet frame cannot occur.
Use a multimeter to measure the resistance between each of the RGBI phase lugs and the RGBI housing:
If all three resistance measurements are high - greater than 2 megohms or “infinite”, the RGBI is most likely not causing the problem. Proceed to the next Test Step “E”.
If any of the three resistance measurements is less than 2 megohms, there is a problem inside of the RGBI. Stop the procedure and call the Dealer Solutions Network (DSN). Indicate the steps that have been taken to find the cause of this problem and the findings that have been discovered.
Connect the megger for testing the insulation of the blower motor cables and the grid blower motor stator windings. Connect the red positive clip to one of the disconnected blower motor cables. Connect the black negative clip to a good cabinet frame ground point.
Ensure that all personnel are not in contact with any of the AC conductors. Ensure that no one is in the area of the grid blower motor or the motor connection in the front of the cabinet.
Set the dial on the megger to 1000 V. Do not test the insulation of the grid blower motor and cables at greater than 1000 V. Press the “START/STOP” button on the megger to start the test. Test the motor cable and the grid blower motor windings at 1000 V. Continue the test until the test voltage has stabilized for 10 seconds. Press the “START/STOP” button to stop the test. The megger will discharge the system. Wait until the voltage readout on the megger display is 0 V. Test Results:
If the insulation test of the grid blower motor and cables indicated a resistance to ground that is much greater than 2 megohms, proceed to the “NO” result below.
A resistance to ground that is very close to 2 megohms or below 2 megohms indicates that each of the three phase cables will need to be tested individually. The tests will determine if one of the cables is faulted to ground or if a blower motor winding is faulted to ground. Proceed to Step “G”.
Illustration 12 g01981957
Grid blower motor connection enclosure
(12) Three phase cables that are used to supply AC power to the grid blower motor from the RGBI
(13) Three phase cables that go out to the grid blower motor
Remove the cover from lower connection enclosure on the front of the grid assembly. Disconnect the three phase cables (12) that are used to supply AC power to the grid blower motor from the RGBI. Position the cable ends where contact with each other or with the frame cannot occur. If necessary, insulate the
Caterpillar parts catalog:
Parts harness Caterpillar catalog:
2594940
HARNESS AS-WIRING
311C, 311D LRR, 312C L, 312D, 312D L, 312D2, 312D2 L, 313D2 LGP, 315C, 315D L, 318C, 318D2 L, 319D, 319D L, 319D LN, 320C, 320C FM, 320D, 320D FM, 320D L, 320D LN, 320D2, 320D2 L, 323D L, 323D LN, 323...
311C, 311D LRR, 312C L, 312D, 312D L, 312D2, 312D2 L, 313D2 LGP, 315C, 315D L, 318C, 318D2 L, 319D, 319D L, 319D LN, 320C, 320C FM, 320D, 320D FM, 320D L, 320D LN, 320D2, 320D2 L, 323D L, 323D LN, 323...
2594887
HARNESS AS-WIRING
311D LRR, 312D, 312D L, 312D2, 312D2 L, 313D2 LGP, 315D L, 318D2 L, 319D, 319D L, 319D LN, 320D, 320D FM, 320D L, 320D LN, 320D2, 320D2 L, 323D L, 323D LN, 323D SA, 324D, 324D FM, 324D FM LL, 324D L, ...
311D LRR, 312D, 312D L, 312D2, 312D2 L, 313D2 LGP, 315D L, 318D2 L, 319D, 319D L, 319D LN, 320D, 320D FM, 320D L, 320D LN, 320D2, 320D2 L, 323D L, 323D LN, 323D SA, 324D, 324D FM, 324D FM LL, 324D L, ...
2484754
HARNESS AS-ENGINE
311C, 312B, 312B L, 312C, 312C L, 314C, 315B, 315B L, 315C, 317B LN, 318B, 318C, 319C, 320B, 320B U, 320C, 320C FM, 320C L, 320D, 320D LRR, 321B, 321C, 322B L, 322B LN, 322C, 322C FM, 323D L, 323D LN,...
311C, 312B, 312B L, 312C, 312C L, 314C, 315B, 315B L, 315C, 317B LN, 318B, 318C, 319C, 320B, 320B U, 320C, 320C FM, 320C L, 320D, 320D LRR, 321B, 321C, 322B L, 322B LN, 322C, 322C FM, 323D L, 323D LN,...
311C, 312B, 312B L, 312C, 312C L, 314C, 315B, 315B L, 315C, 317B LN, 318B, 318C, 319C, 320B, 320B U, 320C, 320C FM, 320C L, 320D, 320D LRR, 321B, 321C, 322B L, 322B LN, 322C, 322C FM, 323D L, 323D LN,...
1786640
HARNESS AS-WIRING
312C, 315C, 318C, 319C, 320C, 320C FM, 320D, 320D LRR, 323D L, 323D LN
312C, 315C, 318C, 319C, 320C, 320C FM, 320D, 320D LRR, 323D L, 323D LN
1986223
HARNESS AS-LIGHTING
312C, 312D, 315C, 315D L, 318C, 319C, 319D, 320C, 322C, 323D L, 323D LN, 324D, 324D LN, 325C, 325D, 325D L, 329D L, 330C, 330C L, 330D, 330D L, 330D LN, 330D MH, 336D L, 336D LN, 345C, 345C L, 345D, 3...
312C, 312D, 315C, 315D L, 318C, 319C, 319D, 320C, 322C, 323D L, 323D LN, 324D, 324D LN, 325C, 325D, 325D L, 329D L, 330C, 330C L, 330D, 330D L, 330D LN, 330D MH, 336D L, 336D LN, 345C, 345C L, 345D, 3...
2510543
HARNESS AS-CONSOLE
307D, 308D, 311D LRR, 312D, 312D L, 314D LCR, 315D L, 319D, 320D, 320D FM, 320D FM RR, 320D L, 320D LN, 320D LRR, 320D RR, 321D LCR, 323D L, 323D LN, 324D, 324D FM, 324D FM LL, 324D L, 324D LN, 325D, ...
307D, 308D, 311D LRR, 312D, 312D L, 314D LCR, 315D L, 319D, 320D, 320D FM, 320D FM RR, 320D L, 320D LN, 320D LRR, 320D RR, 321D LCR, 323D L, 323D LN, 324D, 324D FM, 324D FM LL, 324D L, 324D LN, 325D, ...
2359005
HARNESS AS-HEATER & AIR COND
307D, 311D LRR, 311F LRR, 312D, 312D L, 312D2, 312D2 GC, 312D2 L, 313D, 313D2, 313D2 LGP, 315D L, 318D L, 318D2 L, 319D, 319D L, 319D LN, 320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LN, 320D LRR,...
307D, 311D LRR, 311F LRR, 312D, 312D L, 312D2, 312D2 GC, 312D2 L, 313D, 313D2, 313D2 LGP, 315D L, 318D L, 318D2 L, 319D, 319D L, 319D LN, 320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LN, 320D LRR,...
2595327
HARNESS AS-LIGHTING
320D, 320D FM, 320D FM RR, 320D L, 320D LN, 320D2, 320D2 L, 320E, 320E L, 320E LN, 320E LRR, 320E RR, 323D L, 323D LN, 323D SA, 323D2 L, 323E L
320D, 320D FM, 320D FM RR, 320D L, 320D LN, 320D2, 320D2 L, 320E, 320E L, 320E LN, 320E LRR, 320E RR, 323D L, 323D LN, 323D SA, 323D2 L, 323E L
2381595
HARNESS AS-SWITCH
320D, 320D FM, 320D L, 320D LN, 320D2, 320D2 L, 320E, 320E L, 320E LN, 323D L, 323D LN, 323D SA, 323D2 L, 323E L, 324D, 324D L, 324D LN, 324E L, 324E LN, 325D, 325D L, 329D, 329D L, 329D LN, 329E, 329...
320D, 320D FM, 320D L, 320D LN, 320D2, 320D2 L, 320E, 320E L, 320E LN, 323D L, 323D LN, 323D SA, 323D2 L, 323E L, 324D, 324D L, 324D LN, 324E L, 324E LN, 325D, 325D L, 329D, 329D L, 329D LN, 329E, 329...
2677740
HARNESS AS-SOLENOID
323D L, 323D LN, 323D SA
323D L, 323D LN, 323D SA
2382349
HARNESS AS-SWITCH
320D, 320D LRR, 323D L, 323D LN
320D, 320D LRR, 323D L, 323D LN
2677741
HARNESS AS-SENSOR
323D L
323D L
2756725
HARNESS AS-VALVE
323D L, 323D LN
323D L, 323D LN
2677738
HARNESS AS-VALVE
323D L, 323D LN, 323D SA
323D L, 323D LN, 323D SA
2381597
HARNESS AS-SWITCH
320D, 320D FM, 320D L, 320D LN, 320D2, 320D2 L, 320E, 320E L, 320E LN, 323D L, 323D LN, 323D SA, 323D2 L, 323E L, 324D, 324D L, 324D LN, 324E L, 324E LN, 325D, 325D L, 329D, 329D L, 329D LN, 329E, 329...
320D, 320D FM, 320D L, 320D LN, 320D2, 320D2 L, 320E, 320E L, 320E LN, 323D L, 323D LN, 323D SA, 323D2 L, 323E L, 324D, 324D L, 324D LN, 324E L, 324E LN, 325D, 325D L, 329D, 329D L, 329D LN, 329E, 329...
2381595
HARNESS AS-SWITCH
320D, 320D FM, 320D L, 320D LN, 320D2, 320D2 L, 320E, 320E L, 320E LN, 323D L, 323D LN, 323D SA, 323D2 L, 323E L, 324D, 324D L, 324D LN, 324E L, 324E LN, 325D, 325D L, 329D, 329D L, 329D LN, 329E, 329...
320D, 320D FM, 320D L, 320D LN, 320D2, 320D2 L, 320E, 320E L, 320E LN, 323D L, 323D LN, 323D SA, 323D2 L, 323E L, 324D, 324D L, 324D LN, 324E L, 324E LN, 325D, 325D L, 329D, 329D L, 329D LN, 329E, 329...
2677628
HARNESS AS-LIGHTING
320D, 320D FM, 320D L, 320D2, 320D2 L, 323D L, 323D LN, 323D SA, 323D2 L
320D, 320D FM, 320D L, 320D2, 320D2 L, 323D L, 323D LN, 323D SA, 323D2 L
2757096
HARNESS AS-SOLENOID
323D L, 323D LN
323D L, 323D LN
2677747
HARNESS AS-SOLENOID
323D L
323D L
2698445
HARNESS AS-PLATFORM
323D L, 323D LN
323D L, 323D LN
2382349
HARNESS AS-SWITCH
320D, 320D LRR, 323D L, 323D LN
320D, 320D LRR, 323D L, 323D LN
2677740
HARNESS AS-SOLENOID
323D L, 323D LN, 323D SA
323D L, 323D LN, 323D SA
2677888
HARNESS AS-RADIO
320D L, 320D LN, 323D L, 323D LN, 323D SA
320D L, 320D LN, 323D L, 323D LN, 323D SA