7Y5145 SEAL-BUFFER Caterpillar parts
320 L, 320N, 322 FM L, 322 LN, 325, 325 L, 325 LN, 330, 330 FM L, 350, 350 L, 5080
Rating:
Alternative (cross code) number:
CA7Y5145
7Y-5145
7Y5145
CA7Y5145
7Y-5145
7Y5145
Weight: 0.54 pounds 0 kg.
EXCAVATOR, FRONT SHOVEL,
You can buy:
US$55.00
28 May 2025
FridayParts
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Compatible with CAT 325 325L E325L E325 Boom Bucket Arm Seal Kit 7Y4698 7Y5147 7Y5145 (E325L)
Generic Compatible with CAT 325 325L E325L E325 Boom Bucket Arm Seal Kit 7Y4698 7Y5147 7Y5145
Generic Compatible with CAT 325 325L E325L E325 Boom Bucket Arm Seal Kit 7Y4698 7Y5147 7Y5145
Excavator Compatible with CAT E320 325 330 350 Bucket Cylinder Seal Kit 7Y-5100 7Y5145 (7Y-5145)
Generic Excavator Compatible with CAT E320 325 330 350 Bucket Cylinder Seal Kit 7Y-5100 7Y5145
Generic Excavator Compatible with CAT E320 325 330 350 Bucket Cylinder Seal Kit 7Y-5100 7Y5145
RAParts 7Y5145 New Seal Kit Fits Caterpillar Excavator Models 320 322 325 330 +
Reliable Aftermarket Parts One New Aftermarket Replacement Seal Kit Fits Caterpillar Excavator Models: 320, 320L, 320N, 320S, 3 || OEM Numbers Are Provided for Reference Only. Please Verify Fit Prior To Ordering. || Please Note: Some Listings Use Stock Images for Reference and May Differ from the Actual Product. || This Aftermarket Part Is Made to Meet or Exceed Manufacturer (OEM) Specifications. || All OEM part numbers and logos are to be used for identification purposes only.
Reliable Aftermarket Parts One New Aftermarket Replacement Seal Kit Fits Caterpillar Excavator Models: 320, 320L, 320N, 320S, 3 || OEM Numbers Are Provided for Reference Only. Please Verify Fit Prior To Ordering. || Please Note: Some Listings Use Stock Images for Reference and May Differ from the Actual Product. || This Aftermarket Part Is Made to Meet or Exceed Manufacturer (OEM) Specifications. || All OEM part numbers and logos are to be used for identification purposes only.
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7Y5145
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Compatible equipment models: 7Y5145:
Information:
Note: This is not a fault in the electronic system.Refer to Systems Operation, Testing and Adjusting for information on determining the cause of this condition.Probable Causes
Vibration damper for the C6.6 engine only
Engine supports
Low compression (cylinder pressure)
Individual malfunctioning cylinder
Electronic unit injectorsRecommended Actions
Vibration Damper for the C6.6 Engine Only
Check the vibration damper for damage. If necessary, install a new vibration damper. Inspect the mounting bolts for damage and/or for wear. Replace any damaged bolts. Refer to Disassembly and Assembly, "Vibration Damper and Pulley - Remove" and Disassembly and Assembly, "Vibration Damper and Pulley - Install".Ensure that the repairs have eliminated the fault. If the vibration is still present proceed to "Engine Supports".Engine Supports
Check for any of the following conditions:
Loose engine supports
Loose mounting brackets or broken mounting brackets
Loose bolts
Omitted bolts
Make all necessary repairs. Ensure that the repairs have eliminated the fault. If the vibration is still present proceed to "Low Compression (Cylinder Pressure)".Low Compression (Cylinder Pressure)
Perform a compression test. Refer to Systems Operation, Testing and Adjusting, "Compression - Test ".
If low compression is noted on any cylinders, investigate the cause and rectify the cause.Possible causes of low compression are shown in the following list:
Loose glow plugs
Faulty piston
Faulty piston rings
Worn cylinder bores
Worn valves
Faulty cylinder head gasket
Damaged cylinder head
Perform all necessary repairs.
Ensure that the repairs have eliminated the fault.
If the repair does not eliminate the fault refer to "Malfunctioning Individual Cylinder".Malfunctioning Individual Cylinder
With the engine speed at a fast idle, use the electronic service tool to isolate one cylinder at a time. Note if there is any reduction in engine speed. If a reduction in engine speed is not noted, the isolated cylinder is not operating under normal conditions. If the isolation of a particular cylinder results in a reduction of engine speed that is less than normal, this may indicate that the cylinder is operating below normal performance. Investigate the cause of the fault on any cylinder that is not operating. Investigate the cause of the fault on any cylinder that is operating below normal performance.
If all cylinders have been checked and no faults were detected proceed to "Electronic Unit Injectors".Electronic Unit Injectors
With the engine speed at a fast idle, use the electronic service tool to isolate one cylinder at a time. Note if there is any reduction in engine speed. If a reduction in engine speed is not noted, the isolated electronic unit injector is not operating under normal conditions. If the isolation of a particular cylinder results in a reduction of engine speed that is less than normal, this may indicate that the electronic unit injector is operating below normal performance.
Remove the electronic unit injector from the suspect cylinder. Refer to Disassembly and
Vibration damper for the C6.6 engine only
Engine supports
Low compression (cylinder pressure)
Individual malfunctioning cylinder
Electronic unit injectorsRecommended Actions
Vibration Damper for the C6.6 Engine Only
Check the vibration damper for damage. If necessary, install a new vibration damper. Inspect the mounting bolts for damage and/or for wear. Replace any damaged bolts. Refer to Disassembly and Assembly, "Vibration Damper and Pulley - Remove" and Disassembly and Assembly, "Vibration Damper and Pulley - Install".Ensure that the repairs have eliminated the fault. If the vibration is still present proceed to "Engine Supports".Engine Supports
Check for any of the following conditions:
Loose engine supports
Loose mounting brackets or broken mounting brackets
Loose bolts
Omitted bolts
Make all necessary repairs. Ensure that the repairs have eliminated the fault. If the vibration is still present proceed to "Low Compression (Cylinder Pressure)".Low Compression (Cylinder Pressure)
Perform a compression test. Refer to Systems Operation, Testing and Adjusting, "Compression - Test ".
If low compression is noted on any cylinders, investigate the cause and rectify the cause.Possible causes of low compression are shown in the following list:
Loose glow plugs
Faulty piston
Faulty piston rings
Worn cylinder bores
Worn valves
Faulty cylinder head gasket
Damaged cylinder head
Perform all necessary repairs.
Ensure that the repairs have eliminated the fault.
If the repair does not eliminate the fault refer to "Malfunctioning Individual Cylinder".Malfunctioning Individual Cylinder
With the engine speed at a fast idle, use the electronic service tool to isolate one cylinder at a time. Note if there is any reduction in engine speed. If a reduction in engine speed is not noted, the isolated cylinder is not operating under normal conditions. If the isolation of a particular cylinder results in a reduction of engine speed that is less than normal, this may indicate that the cylinder is operating below normal performance. Investigate the cause of the fault on any cylinder that is not operating. Investigate the cause of the fault on any cylinder that is operating below normal performance.
If all cylinders have been checked and no faults were detected proceed to "Electronic Unit Injectors".Electronic Unit Injectors
With the engine speed at a fast idle, use the electronic service tool to isolate one cylinder at a time. Note if there is any reduction in engine speed. If a reduction in engine speed is not noted, the isolated electronic unit injector is not operating under normal conditions. If the isolation of a particular cylinder results in a reduction of engine speed that is less than normal, this may indicate that the electronic unit injector is operating below normal performance.
Remove the electronic unit injector from the suspect cylinder. Refer to Disassembly and
Caterpillar parts catalog:
Parts seal Caterpillar catalog:
322 FM L, 330
320 L, 325 L
320 L, 320N
320, 320N
320N, 322B, 325 L, 325B, 330, 330B, 330B L
330, 330B, 330B L, OEMS
330, 330 L, 345B, 345B II, 345B L, 350, OEMS
350, 350 L, S25
350, 350 L, S25
325B L, 330, 330 FM L, 330 L, 330B L, 350, 350 L, CR20, P16
328D LCR, 345B II, 345B L, 345C, 345C L, 345D L, 349E L, 349E L VG, 349F L, 350, 365B, 365B II, 365B L, E650
345B II, 345B L, 350, 365B, 365B II, 365B L
0930854
SEAL-LIP TYPE
345C, 5080, E70B
345C, 5080, E70B
1446324
SEAL GP
320B, 322B L, 322B LN, 324D FM, 325B L, 330B L, 345B II, 345B L, 375 L
320B, 322B L, 322B LN, 324D FM, 325B L, 330B L, 345B II, 345B L, 375 L
0044162
SEAL
WE-601B
WE-601B
0004130
SEAL
WE-601B
WE-601B
81010233
SEAL KIT, BLOCK
CS-431
CS-431
90000159
SEAL
CS-431
CS-431
1633087
SEAL-KIT
325B L, 325C, 325D L, 330B L, 330C, 330D L, 345B II, 345B L, 345C L, 365B, 365B II, 365C, 365C L, 385B, 385C L, 5080
325B L, 325C, 325D L, 330B L, 330C, 330D L, 345B II, 345B L, 345C L, 365B, 365B II, 365C, 365C L, 385B, 385C L, 5080
1667542
SEAL GP-KIT
320B, 322B LN, 325B L, 330B L, 345B II, 345B L, 365B, 5080
320B, 322B LN, 325B L, 330B L, 345B II, 345B L, 365B, 5080
1517207
SEAL-O-RING
320B, 320C, 322 LN, 325B L, 330B L, 345B II, 345B L, 350 L, 365B, 375, 5080
320B, 320C, 322 LN, 325B L, 330B L, 345B II, 345B L, 350 L, 365B, 375, 5080
345C, 365B, 365B II, 365B L, 365C, 365C L, 365C L MH, 374D L, 374F L, 375, 375 L, 385B, 385C, 385C L, 390D, 390D L, 390F L, 5080, CR20, S25
365B, 365B L, 375, 5080
365B, 365B L, 375, 385B, 5080