Part Number

244-2596 (2442596)

Product Type

High-pressure hydraulic brake line (reinforced flexible type, integral molded/ pre-formed)

Primary Application

Caterpillar 120, 135, 140 Series Motor Graders (all core/derivative models with standard hydraulic brake systems)

Core Material Structure

Inner tube: Cat-specified oil-resistant nitrile rubber (NBR) / HNBR; Reinforcement layer: High-strength steel wire braid (1/2 layer, per pressure requirement); Outer sheath: Wear-resistant & anti-tear synthetic rubber (SBR/CR)

Working Pressure Rating

40 MPa (5800 PSI) – optimized for Cat motor grader hydraulic brake system working pressure

Burst Pressure Rating

≥120 MPa (17400 PSI) – 3x the working pressure, meeting Cat’s safety factor requirements

Operating Temperature Range

-40°C to +120°C (-40°F to +248°F) – maintains flexibility and sealing in extreme construction site temperatures

End Fitting Type

Cat original precision hydraulic brake fittings (metric threaded / flare type, OEM standard); integrated sealing gasket (NBR/HNBR)

Fitting Sealing Material

High-temperature oil-resistant HNBR (Shore A 70-80) – permanent sealing against hydraulic fluid leakage

Line Length

Custom pre-formed length for designated brake system positions (consult Caterpillar Official Parts Catalog for exact dimensions, matched to 120/135/140 grader chassis layout)

Compatible Hydraulic Medium

Cat-specified heavy equipment brake hydraulic fluid, mineral oil-based hydraulic fluid (per Cat SEBU6250 standard)

Flexibility Performance

Resists permanent kinking at bending radius ≥3x the line outer diameter

Installation Method

Threaded connection (torque-controlled); fixed with Cat original cable clamps/ brackets

Installation Tool

Standard torque wrench, open-end wrench (no special customized equipment required)

Net Weight

Approx. 0.1–0.8 kg (0.22–1.76 lbs) per unit (varies by pre-formed length and fitting size for different installation positions)