CATUndercarriage

903400 Track Adjuster Seal Kit — Cat 215B 215C

This is a high-quality seal kit specifically designed for the track adjuster system on Caterpillar excavators, ensuring proper hydraulic pressure retention and smooth operation. Manufactured to meet stringent sealing standards, it prevents leaks and maintains consistent track tension, unlike a worn kit with compromised seals. Operators may notice hydraulic fluid leaks around the track adjuster, difficulty in adjusting track tension, or a track that loosens over time when this kit fails.

Track Adjuster Seal Kit – Part No 903400 – CAT Spare Part
Part Specifications
BrandCAT
CategoryUndercarriage
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.

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Installation & Application Notes

Cross-reference part number with serial number before ordering to confirm fitment. Keep original parts until new ones are confirmed correct. Record part numbers replaced for future reference.

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

Part TypeTrack Adjuster Seal Kit
MaterialNBR rubber, metal
ApplicationTrack adjuster system
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The most common symptom of a failing track adjuster seal kit is visible hydraulic fluid leakage around the track adjuster assembly, often accompanied by a track that gradually loosens. If the leaks worsen, the adjuster may lose its ability to maintain adequate track tension, leading to poor undercarriage performance and potential track derailment. Continued operation risks significant hydraulic system contamination and damage to the adjuster components.

Installation Tip

Carefully clean all internal surfaces of the track adjuster cylinder and piston rod before installing the new seals to prevent damage. Ensure all seals are properly oriented and seated before reassembling the adjuster.

Service Note

Inspect the track adjuster cylinder bore and piston rod for scoring or damage, and check the hydraulic fluid for contamination when replacing the seal kit.