4N8411 TUBE-COOLER BYPASS Caterpillar parts
3408, 3412, 3412C, 5110B, 651E, 657E, 773B, 773D, 773E, 773F, 773G, 773G LRC, 773G OEM, 775B, 775D, 775E, 775F, 775G, 775G LRC, 775G OEM, 777C, 777D, 777F, 777G, 844, 844H, 844K, 854K, 990, 990 II, 99...
Rating:
Alternative (cross code) number:
CA4N8411
4N-8411
4N8411
CA4N8411
4N-8411
4N8411
Weight: 0.64 pounds 0 kg.
INDUSTRIAL ENGINE, WHEEL TRACTOR,
Compatible equipment models: 4N8411:
Number on catalog scheme:
4
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Information:
Probable Causes
Leaks in the core of oil cooler
Leaks in the core of the NRS cooler
Cracks in the turbocharger housing or center section
Leaks in the cylinder head gasket
Damaged water seals
Cracks in the cylinder head
Cracks in a cylinder liner
Liner seals
Cracks in the cylinder blockRecommended Actions
Table 1
Troubleshooting Test Steps Values Results
1. Leaks in the Cooling System
A. Pressurize the cooling system. Refer to Systems Operation/Testing and Adjusting, "Cooling System - Test".
Leaks
Result: The test indicates a drop in pressure.
If there are no external leaks, there may be an internal leak.
Make any repairs, as required.
Result: The test indicates that there is not a drop in pressure.
Proceed to Test Step 2.
2. Leaks in Core of Oil Cooler
A. Check for leaks in the oil cooler core.
Oil cooler
Result: The oil cooler is leaking.
Repair or replace the oil cooler.
Result: The oil cooler is not leaking.
Proceed to Test Step 3.
3. Liquid Cooled Turbochargers
A. Inspect the turbocharger housing and center section for cracks.
Turbocharger
Result The turbocharger housing or center section has cracks.
Make any repairs, as required.
Result The turbocharger housing or center section does not have cracks.
Proceed to Test Step 4.
4. Leaks in the Cylinder Head Gasket
A. Inspect the cylinder head gasket for leaks.
Head gasket
Result The cylinder head gasket is leaking.
Replace the cylinder head gasket.
Result The cylinder head gasket is not leaking.
Proceed to Test Step 5.
5. Damaged Water Seals
A. Inspect the water seal for damage.
Water seals
Result The water seal is damaged.
Repair or replace the damaged seal.
Result The water seal is not damaged.
Proceed to Test Step 6.
6. Cracks in the Cylinder Head
A. Check for cracks in the cylinder head.
Cylinder head
Result The cylinder head is damaged.
Repair or replace the damaged cylinder head.
Result The cylinder head is not damaged.
Proceed to Test Step 7.
7. Cracks in a Cylinder Liner
A. Check for cracked cylinder liners.
B. Check the liner seals for damage.
Cylinder liner and seals
Result The cylinder liner or seal is damaged or cracked.
Repair or replace the damaged cylinder liner and seal.
Result The cylinder liner or seal is not damaged or cracked.
Proceed to Test Step 8.
8. Cracks in the Cylinder Block
A. Inspect the cylinder block for cracks.
Cylinder liner
Result The cylinder block is cracked.
Repair or replace the damaged cylinder block.
Complete the procedure in the order in which the steps are listed. If the procedure did not correct the issue, contact your Cat dealer Technical Communicator (TC). For further assistance, your TC can confer with the Dealer Solutions Network (DSN).
Leaks in the core of oil cooler
Leaks in the core of the NRS cooler
Cracks in the turbocharger housing or center section
Leaks in the cylinder head gasket
Damaged water seals
Cracks in the cylinder head
Cracks in a cylinder liner
Liner seals
Cracks in the cylinder blockRecommended Actions
Table 1
Troubleshooting Test Steps Values Results
1. Leaks in the Cooling System
A. Pressurize the cooling system. Refer to Systems Operation/Testing and Adjusting, "Cooling System - Test".
Leaks
Result: The test indicates a drop in pressure.
If there are no external leaks, there may be an internal leak.
Make any repairs, as required.
Result: The test indicates that there is not a drop in pressure.
Proceed to Test Step 2.
2. Leaks in Core of Oil Cooler
A. Check for leaks in the oil cooler core.
Oil cooler
Result: The oil cooler is leaking.
Repair or replace the oil cooler.
Result: The oil cooler is not leaking.
Proceed to Test Step 3.
3. Liquid Cooled Turbochargers
A. Inspect the turbocharger housing and center section for cracks.
Turbocharger
Result The turbocharger housing or center section has cracks.
Make any repairs, as required.
Result The turbocharger housing or center section does not have cracks.
Proceed to Test Step 4.
4. Leaks in the Cylinder Head Gasket
A. Inspect the cylinder head gasket for leaks.
Head gasket
Result The cylinder head gasket is leaking.
Replace the cylinder head gasket.
Result The cylinder head gasket is not leaking.
Proceed to Test Step 5.
5. Damaged Water Seals
A. Inspect the water seal for damage.
Water seals
Result The water seal is damaged.
Repair or replace the damaged seal.
Result The water seal is not damaged.
Proceed to Test Step 6.
6. Cracks in the Cylinder Head
A. Check for cracks in the cylinder head.
Cylinder head
Result The cylinder head is damaged.
Repair or replace the damaged cylinder head.
Result The cylinder head is not damaged.
Proceed to Test Step 7.
7. Cracks in a Cylinder Liner
A. Check for cracked cylinder liners.
B. Check the liner seals for damage.
Cylinder liner and seals
Result The cylinder liner or seal is damaged or cracked.
Repair or replace the damaged cylinder liner and seal.
Result The cylinder liner or seal is not damaged or cracked.
Proceed to Test Step 8.
8. Cracks in the Cylinder Block
A. Inspect the cylinder block for cracks.
Cylinder liner
Result The cylinder block is cracked.
Repair or replace the damaged cylinder block.
Complete the procedure in the order in which the steps are listed. If the procedure did not correct the issue, contact your Cat dealer Technical Communicator (TC). For further assistance, your TC can confer with the Dealer Solutions Network (DSN).
Cat SIS web machinery list:
Parts tube Caterpillar catalog:
631E, 633E II, 637E, 651E, 657E, D10N, D10R, D8L, D9L, D9N, D9R
631E, 633E II, 637E, 651E, 657E, D10N, D10R, D8L, D9L, D9N, D9R
631E, 633E II, 637E, 651E, 657E, D10N, D10R, D8L, D9L, D9N, D9R
631E, 633E II, 637E, 651E, 657E, D10N, D10R, D8L, D9L, D9N, D9R
651E, 657E, D8L, D9L
621B, 657E, 992C
992C, 992D
69D, 768B, 769, 769C, 769D, 771D, 772, 773, 773B, 773D, 773E, 775B, 775D, 775E
769C, 769D, 770, 771C, 771D, 772, 773E, 773F, 775E, 775F
D11N, D11R
D10R, D10T, D10T2
3408, 3412, 365C, 365C L, 365C L MH, 374D L, 374F L, 375, 375 L, 385B, 385C, 385C FS, 385C L, 385C L MH, 390D, 390D L, 390F L, 5080, 5090B, 589, 631D, 631E, 631G, 633E II, 637D, 637E, 637G, 657E, 769C...
7W5152
TUBE AS
3408
3408
8N8138
TUBE
3408, 3408C, D8L, PR-450, PR-450C
3408, 3408C, D8L, PR-450, PR-450C
7N8139
TUBE
3408, 3408C, 3412, 3412C, D8L, D9L, PR-450, PR-450C
3408, 3408C, 3412, 3412C, D8L, D9L, PR-450, PR-450C
7N7794
TUBE AS-SUPPLY
3408, 3408C, 3408E, D44B, D550B, PR-450, PR-450C
3408, 3408C, 3408E, D44B, D550B, PR-450, PR-450C
3408, 3412, PR-450, PR-450C
3408, 3412
9N2608
TUBE AS-OIL
3408
3408
3188882
TUBE AS-OIL SUPPLY
3408, 3412, 589, 631E, 637E, 651E, 657E, D10N, D9R
3408, 3412, 589, 631E, 637E, 651E, 657E, D10N, D9R
4W7195
TUBE AS
3408, 631E, 637E, 651E, 657E, D8L, D9L, D9N
3408, 631E, 637E, 651E, 657E, D8L, D9L, D9N
7C3551
TUBE
3408, 3412, 631E, 637E, 651E, 657E
3408, 3412, 631E, 637E, 651E, 657E
4W7197
TUBE AS-OIL
3408, 3412, 589, 631E, 637E, 651E, 657E, D10N, D8L, D9L, D9N, D9R
3408, 3412, 589, 631E, 637E, 651E, 657E, D10N, D8L, D9L, D9N, D9R