71590 XCMG GR2605 motor grader breather vent

Technical Parameters

• Model: 71590
• Type: Threaded waterproof breather vent (with filter / anti-splash)
• Body Material: Brass / Aluminum alloy / Reinforced Nylon (PA66)
• Filter Element: 40~60μm metal mesh / ePTFE waterproof membrane
• Thread: Standard metric (M12×1.5 / M14×1.5 / M16×1.5)
• Seal: NBR O-ring (oil & heat resistant)
• Air Flow: ≥1.2L/[email protected]
• Protection Rating: IP67~IP68 (waterproof, dustproof, oil-resistant)
• Operating Temp: -40℃～125℃
• Features: Pressure balance, waterproof/oilproof, dust filtration, anti-splash, maintenance-free, long service life

Application Scenarios

• Gearboxes, transfer cases, drive axle housings, wheel reducers
• Hydraulic tanks, fuel tanks, hydraulic pump/motor housings
• Reducers, winches, axle vents, hydraulic stations

  Provides automatic pressure balance for closed chambers, avoiding oil leakage, seal bulging and dust suction due to thermal expansion/contraction, extending seal and oil service life.

Common Faults & Troubleshooting

• Clogged Vent: Filter/membrane blocked by sludge/dust → Clean or replace 71590 to prevent seal leakage from overpressure.
• Oil Leakage/Splash: Excessive tilting, damaged membrane → Replace 71590 with anti-splash cap/float type.
• Water/Dust Ingress: Seal aging, damaged membrane → Replace O-ring and breather to restore IP67 protection.
• Abnormal Noise/Vacuum: Poor ventilation → Purge or replace to ensure pressure balance.