Bucket Cylinder Seal Kit 194-8235 for CAT 336D Excavator | Hydraulic Repair Set 1948235

Recover Full Digging Power & Eliminate Bucket Drift

Heavy mass excavation places immense stress on bucket cylinder seals. When internal seal lips wear down under continuous shock loads, hydraulic fluid bypasses the piston head—leading to slow cycle times, reduced breakout force, uncommanded bucket drift, and hydraulic oil leaks.

This heavy-duty 194-8235 hydraulic seal kit restores full pressure retention and holding capability for Caterpillar 336D excavators. Precision-engineered to match original factory specs, every component in this set delivers a zero-leak drop-in fitment to get your 36-ton machine back to maximum productivity.

Material & Severe-Duty Engineering

• High-Pressure Rod & Piston Seals: Precision-molded from advanced Polyurethane (PU) to withstand intense hydraulic pressure spikes up to 35+ MPa without lip rolling or extrusion.

• Anti-Extrusion PTFE Backing Rings: Reinforced bronze-filled PTFE buffer rings safeguard primary seals against sudden high-tonnage shock loads during heavy rock and soil penetration.

• Thermal-Stable Static Seals & O-Rings: Premium Nitrile Rubber (NBR 70°/80° Durometer) maintains constant elastic memory across broad operating temperatures while resisting fluid oxidation.

• Heavy-Duty Scraper Wiper Ring: Keeps abrasive quarry dust, silica sand, wet mud, and slurry from creeping past the cylinder gland and scoring the large-diameter chrome piston rod.

Target Equipment & Component Compatibility

• Machine Model: CAT 336D / 336D L Excavator

• Target Component: Bucket Cylinder Assembly

• Part Number Cross-Reference: 194-8235 / 1948235 / 194 8235

Technical Specifications

• Kit Type: Hydraulic Bucket Cylinder Overhaul / Repair Packing Pack

• Primary Materials: Premium Polyurethane (PU), Nitrile Rubber (NBR), Industrial PTFE

• Operating Temperature Range: -30°C to 110°C (-22°F to 230°F)

• Fluid Compatibility: ISO VG 32/46/68 mineral-based hydraulic oils and synthetic fluids

• Application Target: Direct-fit replacement for field service repairs or shop rebuilds

Fitment Verification Notice

Caterpillar 336D excavators feature variations in bucket cylinder barrel sizes depending on linkage specs (e.g., Reach vs. Mass Excavation linkage) and serial prefixes. Before purchasing, cross-check the part number stamped on your cylinder head gland or verify 194-8235 / 1948235 in your CAT parts manual.