3148081 HOSE AS Caterpillar parts
345D, 345D L, 345D L VG, 349D, 349D L
Rating:
Alternative (cross code) number:
CA3148081
314-8081
3148081
CA3148081
314-8081
3148081
Weight: 10 pounds 4 kg.
EXCAVATOR, MOBILE HYD POWER UNIT,
Compatible equipment models: 3148081:
Number on catalog scheme:
21
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Information:
Probable Causes
Incorrect maintenance intervals and/or incorrect oil
Contaminated engine oil
Low oil pressure
Leaks in the air system
Inspect the fuel filters for contamination.Recommended Actions
Note: The procedures have been listed in order of probability. Complete the procedures in order.
Table 1
Troubleshooting Test Steps Values Results
1. Incorrect Maintenance Intervals and/or Incorrect Oil
A. Use engine oil that is recommended and change the engine oil at the interval that is recommended by the engines Operation and Maintenance Manual.
Maintenance Intervals
Result: The engine oil was changed at the interval that is recommended by the engines Operation and Maintenance Manual.
Proceed to Test Step 2.
Result: The engine oil was not changed at the interval that is recommended by the engines Operation and Maintenance Manual.
Use at least the minimum grade of Cat oil.
Repair: Change the engine oil at the interval that is recommended. Repair or replace any damaged parts.
2. Contaminated Engine Oil
A. Obtain an S-O-S oil analysis. The analysis will contribute to a better understanding of oil contamination.
B. Check the oil filter bypass valve.
If the oil filter bypass valve is open, the oil will not be filtered. Check the oil filter bypass valve for a weak spring or for a broken spring. If the spring is broken, replace the spring. Verify that the oil bypass valve is operating correctly. Refer to the Disassembly and Assembly manual.
Refer to the Caterpillar guidelines for "Reusability and Salvage/Repair" for determining if the replacement of parts is necessary in order to perform a quality repair.
Contamination
Result: The oil is contaminated.
Repair: Determine the reason for any contamination of the engine oil and make the necessary repairs. Drain the crankcase and refill the crankcase with clean engine oil. Install new engine oil filters. Refer to the engines Operation and Maintenance Manual.
Result: The oil is not contaminated.
Proceed to Test Step 3.
3. Low Oil Pressure
A. Engine oil that is contaminated with another liquid can cause low engine oil pressure. High engine oil level can be an indication of contamination. Obtain an analysis of the engine oil.
B. The inlet screen of the suction tube for the engine oil pump can have a restriction. This restriction will cause cavitation and a loss of engine oil pressure. Check the inlet screen on the suction tube and remove any material that may be restricting engine oil flow.
When some components of the engine show wear in a short time, the cause can be a restriction in a passage for engine oil. An indicator for the engine oil pressure may indicate sufficient pressure, but a component is worn due to a lack of lubrication. In such a case, look at the passage for the engine oil supply to the component. Refer to Systems Operation/Testing and Adjusting, "Lubrication System" for additional information.
Restriction
Result: The inlet tube has a restriction.
Repair: Clear the obstruction. Verify the repair.
Result: The inlet tube does not have a restriction.
Proceed to Test Step 4.
4. Leaks in Air System
A. A leak in
Incorrect maintenance intervals and/or incorrect oil
Contaminated engine oil
Low oil pressure
Leaks in the air system
Inspect the fuel filters for contamination.Recommended Actions
Note: The procedures have been listed in order of probability. Complete the procedures in order.
Table 1
Troubleshooting Test Steps Values Results
1. Incorrect Maintenance Intervals and/or Incorrect Oil
A. Use engine oil that is recommended and change the engine oil at the interval that is recommended by the engines Operation and Maintenance Manual.
Maintenance Intervals
Result: The engine oil was changed at the interval that is recommended by the engines Operation and Maintenance Manual.
Proceed to Test Step 2.
Result: The engine oil was not changed at the interval that is recommended by the engines Operation and Maintenance Manual.
Use at least the minimum grade of Cat oil.
Repair: Change the engine oil at the interval that is recommended. Repair or replace any damaged parts.
2. Contaminated Engine Oil
A. Obtain an S-O-S oil analysis. The analysis will contribute to a better understanding of oil contamination.
B. Check the oil filter bypass valve.
If the oil filter bypass valve is open, the oil will not be filtered. Check the oil filter bypass valve for a weak spring or for a broken spring. If the spring is broken, replace the spring. Verify that the oil bypass valve is operating correctly. Refer to the Disassembly and Assembly manual.
Refer to the Caterpillar guidelines for "Reusability and Salvage/Repair" for determining if the replacement of parts is necessary in order to perform a quality repair.
Contamination
Result: The oil is contaminated.
Repair: Determine the reason for any contamination of the engine oil and make the necessary repairs. Drain the crankcase and refill the crankcase with clean engine oil. Install new engine oil filters. Refer to the engines Operation and Maintenance Manual.
Result: The oil is not contaminated.
Proceed to Test Step 3.
3. Low Oil Pressure
A. Engine oil that is contaminated with another liquid can cause low engine oil pressure. High engine oil level can be an indication of contamination. Obtain an analysis of the engine oil.
B. The inlet screen of the suction tube for the engine oil pump can have a restriction. This restriction will cause cavitation and a loss of engine oil pressure. Check the inlet screen on the suction tube and remove any material that may be restricting engine oil flow.
When some components of the engine show wear in a short time, the cause can be a restriction in a passage for engine oil. An indicator for the engine oil pressure may indicate sufficient pressure, but a component is worn due to a lack of lubrication. In such a case, look at the passage for the engine oil supply to the component. Refer to Systems Operation/Testing and Adjusting, "Lubrication System" for additional information.
Restriction
Result: The inlet tube has a restriction.
Repair: Clear the obstruction. Verify the repair.
Result: The inlet tube does not have a restriction.
Proceed to Test Step 4.
4. Leaks in Air System
A. A leak in
Caterpillar parts catalog:
Parts hose Caterpillar catalog:
308C, 311C, 311D LRR, 312C, 312C L, 312D, 312D L, 312D2, 312D2 GC, 312D2 L, 313D, 313D2, 313D2 LGP, 314C, 315D L, 318D L, 318D2 L, 319D, 319D L, 320 L, 320B, 320C, 320C FM, 320C L, 320D, 320D FM, 320D...
308C, 311C, 311F LRR, 312C, 312C L, 312E, 312E L, 314C, 314D CR, 314D LCR, 314E CR, 314E LCR, 315C, 315D L, 316E L, 318C, 318D L, 318D2 L, 318E L, 319D, 319D L, 319D LN, 320 L, 320B, 320C, 320D FM RR,...
308C, 312C, 312C L, 312D, 312D L, 314D LCR, 314E CR, 314E LCR, 315C, 315D L, 318C, 318D L, 318D2 L, 319C, 319D, 319D L, 319D LN, 320C, 320C FM, 320D, 320D FM, 320D GC, 320D L, 320D LRR, 320D RR, 320D2...
308C, 312C L, 312D, 312D L, 315C, 315D L, 319D L, 319D LN, 320B, 320C, 320C FM, 320C L, 320D, 320D FM, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 320D2, 320D2 GC, 320D2 L, 320E, 320E L, 320E LN, 322...
311C, 311D LRR, 311F LRR, 312C, 312D, 312D L, 315C, 315D L, 318C, 318D L, 318D2 L, 319C, 319D, 319D L, 320B, 320C, 320D, 320D L, 320D LRR, 320D RR, 320D2 L, 321C, 321D LCR, 322, 322 FM L, 322 LN, 322B...
311C, 312C, 315C, 318C, 319C, 320B, 320C, 320C FM, 320D, 320D FM RR, 320D L, 320D LRR, 320D RR, 321C, 321D LCR, 322B, 322C FM, 323D LN, 324D, 324D LN, 325 LN, 325C, 325D, 325D FM LL, 325D L, 325D MH, ...
314C, 314D CR, 314D LCR, 314E CR, 320B, 320C FM, 320D, 320D L, 323D L, 324E LN, 325B L, 325D FM, 325D FM LL, 328D LCR, 330B, 330B L, 330C L, 330C MH, 330D, 330D FM, 330D L, 330D LN, 336D, 336D L, 336D...
318C, 319C, 320B, 320C, 320D FM RR, 320D L, 320D LN, 320D LRR, 320D RR, 320E LRR, 320E RR, 321C, 322B LN, 322C, 323D L, 323D LN, 323D SA, 324D, 324D FM, 324D L, 325B L, 325C, 325D, 325D L, 328D LCR, 3...
345B, 345B II, 345B II MH, 345B L, 345C, 345C L, 345C MH, 345D, 345D L, 345D L VG, 349D, 349D L, 725, 730, W345B II, W345C MH
345B II, 345B L, 345C, 345C L, 345C MH, 345D, 345D L, 345D L VG, 349D, 349D L, 365B, 365B L, TK1051, W345C MH
320D, 320D L, 320D LN, 320D LRR, 320D RR, 320D2, 320D2 L, 321D LCR, 323D L, 323D LN, 323D SA, 323D2 L, 325C, 330B L, 330C L, 345C, 345C L, 345D, 345D L, 345D L VG, 349D, 349D L, 350
345C, 345C L, 345C MH, 345D, 345D L, 345D L VG, 349D, 349D L, W345C MH
3148080
HOSE AS
345D, 345D L, 345D L VG, 349D, 349D L
345D, 345D L, 345D L VG, 349D, 349D L
3148079
HOSE AS
345D, 345D L, 345D L VG, 349D, 349D L
345D, 345D L, 345D L VG, 349D, 349D L
3258856
HOSE AS
345D, 345D L, 345D L VG, 349D, 349D L
345D, 345D L, 345D L VG, 349D, 349D L
3334615
HOSE AS
345D, 345D L, 345D L VG, 349D, 349D L
345D, 345D L, 345D L VG, 349D, 349D L
3258855
HOSE AS
345D, 345D L, 345D L VG, 349D, 349D L
345D, 345D L, 345D L VG, 349D, 349D L
3258854
HOSE AS
345D, 345D L, 345D L VG, 349D, 349D L
345D, 345D L, 345D L VG, 349D, 349D L
3023161
HOSE AS
345D, 345D L, 345D L VG, 349D L
345D, 345D L, 345D L VG, 349D L
3292793
HOSE AS
345D, 345D L, 345D L VG, 349D, 349D L
345D, 345D L, 345D L VG, 349D, 349D L
3023308
HOSE AS
345D, 345D L, 345D L VG, 349D, 349D L
345D, 345D L, 345D L VG, 349D, 349D L
3258792
HOSE AS
345D, 345D L, 345D L VG, 349D, 349D L
345D, 345D L, 345D L VG, 349D, 349D L
1136761
HOSE AS
330C L, 345D, 345D L, 345D L VG, 349D, 349D L
330C L, 345D, 345D L, 345D L VG, 349D, 349D L
3148082
HOSE AS
345D, 345D L, 345D L VG, 349D, 349D L
345D, 345D L, 345D L VG, 349D, 349D L