Description
CAT 2L-5970 SLEEVE
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The CAT 2L-5970 is a Caterpillar genuine air compressor tube fitting sleeve, compatible with various CAT engine air compressor high-pressure oil pipe fittings. It enhances the sealing and vibration resistance of the fitting, preventing high-pressure air leakage, and is a key sealing fastener for air compressor oil circuit connections.
Core Parameters (Original Manufacturer Nominal)
Item Details
Part Model: CAT 2L-5970 (2L5970) Tube Fitting Sleeve
Material: SUS304 stainless steel, tensile strength ≥520MPa, hardness HB187-207, polished surface, temperature resistance -40℃ to 180℃, high pressure resistance ≥35MPa
Key Dimensions: Inner diameter 12mm, outer diameter 18mm, length 25mm, thread specification M16×1.5, compatible tubing outer diameter 12mm, wall thickness 2mm
Compatible Components: Compatible with CAT C15, C18, 3512B and other engine air compressors; compatible tubing fitting models: 2L-5969, 2L-5971; common machines: Caterpillar 349D excavator, 777F mining truck, C15 generator set
Functional Characteristics: Sealing rating IP67 rating, withstands radial load ≤2kN, vibration frequency 5-500Hz, suitable for high-pressure oil circuit conditions.
Installation method: Threaded connection, installation torque 25-30N・m, uses O-rings (φ12×2mm) for sealing.
Weight: Approx. 0.05kg (0.11lbs)
Suitable for: Oil pipe joint sealing: Installed at the high-pressure oil pipe joint of the air compressor, it seals with an O-ring through threaded fastening to prevent high-pressure oil/air leakage, ensuring normal oil supply and stable operating pressure of the air compressor.
Working conditions: Suitable for heavy-duty construction machinery, mining equipment, generator sets, and other high-pressure, high-vibration conditions, providing reliable sealing and vibration protection for air compressor oil circuit connections.
Compatibility: Used with 2L-5969 oil pipe joint and 2L-5971 sealing gasket; when replacing, the integrity of the joint threads, the aging condition of the O-ring, and the sleeve installation torque must be checked simultaneously.
Installation and Maintenance Points
Installation Steps:
Clean the threads of the sleeve and oil pipe connector, install a new O-ring (φ12×2mm), and apply a small amount of thread sealant (Loctite 567);
Screw the sleeve into the connector, tightening in two steps at a torque of 25-30 N·m;
After checking for leaks, start the engine and test at idle and rated speed to ensure there are no abnormal oil/air pressures.
Maintenance Cycle: Check every 1500 hours under standard operating conditions; shorten to 800 hours under harsh operating conditions (high temperature, high pressure, high vibration). Focus on checking for loose threads, aging O-rings, and sleeve deformation.
Replacement Standard: Replace the sleeve if it has cracks, stripped threads, inner diameter wear exceeding 0.1mm, or damaged sealing surface. It cannot be repaired.
