CATHydraulic Parts

4T6015 Cylinder A — Cat 977 977K

This is a hydraulic cylinder assembly that provides the linear motion required for various machine functions, such as actuating implements or steering systems. Manufactured to meet stringent material and dimensional standards, it ensures reliable performance compared to a worn cylinder with internal leaks or scoring. Operators may notice slow or erratic movement of the controlled component, or a complete loss of hydraulic pressure and function.

Cylinder A – Part No 4T6015 – CAT Spare Part
Part Specifications
BrandCAT
CategoryHydraulic Parts
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO

Compatible Models

Always verify with serial number before ordering.

WhatsApp for Price & Availability☎ Call Mumbai Office

Parts Trading Company  ·  Mumbai, Est. 1956  ·  Same-day dispatch  ·  Ships worldwide  ·  GST invoice included

M IST.', };

Related CAT Parts

From the same category — may also be needed

3631685
Cylinder Gp- Stick
7J9353
Caterpillar Cylinder Assem. 7J9353
1333814
Rotocoil As
5i8011
Caterpillar Valve Seat Insert (Inlet) 5I8011
6E4182
Gear Pump-Hydraulic
1463685
Pump Gp-Piston

Browse all CAT Hydraulic Parts →

Ship This Part To Your Location

DubaiSaudi ArabiaNigeriaKenyaSouth AfricaBangladeshMalaysiaGhanaQatarEgypt
India
MaharashtraGujaratTamil NaduRajasthanKarnatakaTelangana

Full shipping information on regional pages · Air freight 2–12 days · GST invoice for India

Installation & Application Notes

Flush hydraulic lines before fitting new components. Use only manufacturer-specified hydraulic fluid. Check O-rings and backup rings for correct orientation. Bleed air from system after installation.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeHydraulic Cylinder Assembly
MaterialHardened Steel, Cast Iron
ApplicationMachine Actuation System
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Slow or jerky operation of the connected implement is often the first sign of a failing hydraulic cylinder. If ignored, the cylinder may lose its ability to hold position or extend fully, leading to reduced machine productivity. Continued operation with a compromised cylinder risks damage to other hydraulic components due to fluid contamination or system imbalance.

Installation Tip

Ensure the hydraulic system is properly depressurized before disconnecting lines to prevent fluid spray and injury. Avoid overtightening mounting bolts, as this can distort the cylinder body and cause premature seal failure.

Service Note

Inspect hydraulic hoses and fittings for wear or leaks, and check the condition of the hydraulic fluid and filter.