803166678 rubber hose for XCMG ZL50G/ZL50GL Wheel Loader

product parameters

Part No：803166678
Product Type：Cooling System Rubber Hose
Applicable Equipment：XCMG Wheel Loader
Core Technology：EPDM multi-layer fiber reinforced composite structure
Material：EPDM inner rubber, textile fiber reinforcement, EPDM outer rubber
Hose Inner Diameter：35mm
Hose Outer Diameter：47mm
Working Pressure：1.3MPa
Burst Pressure：3.9MPa
Proof Test Pressure：1.95MPa
Connection Type：Belled end for hose clamp connection
Minimum Bend Radius：140mm
Working Temperature Range：-40℃ ~ +135℃
Weight：1.26kg
Applicable Medium：Ethylene glycol based engine antifreeze / cooling water
Application：Flexible coolant connecting pipeline for loader cooling circuit

• Multi-layer textile fiber woven reinforcement layer with uniform weaving density, great pressure resistance, effectively prevent hose bulging and expansion under rated working pressure.
• Integral bell mouth forming on both ends, fits tightly with original pipe fittings. Even clamping force after installing hose clamps delivers reliable sealing performance.
• Outer rubber compound with excellent ozone and aging resistance, effectively defend against engine compartment heat radiation, dust and gravel scratch, extending service life.
• OEM overall contour and length, fully match original pipeline layout, no on-site cutting or modification required to reduce maintenance time.
• Good flexibility and vibration absorption capacity, buffer engine transmitted vibration and reduce fatigue cracking risk at bending and joint areas.
• Great medium compatibility, compatible with standard ethylene glycol antifreeze, resistant to coolant hydrolysis and corrosion.
• Batch pressure and aging inspection before delivery, every hose passes tightness test to avoid sudden coolant leakage on construction sites.

FAQ 

Q：What signs mean the rubber hose needs replacement?
A：Surface hardening, cracking, bubbling, coolant seepage, hose swelling, rubber peeling, cracks or leakage at bell mouth ends.

Q：What should be noted during rubber hose installation?
A：Clean pipe connectors before installation; align both ends of hose with pipe fittings; tighten hose clamps evenly; avoid excessive twisting or sharp bending of hose. Keep hose away from sharp metal edges and high-temperature components.

Q：What are common causes of rubber hose damage?
A：Long-term high temperature aging; deteriorated coolant accelerating inner rubber corrosion; excessive bending during installation; friction with surrounding metal parts; over-tightened hose clamps cutting rubber.

Q：Can leaking rubber hose be repaired and reused?
A：Not recommended. Temporary bonding or wrapping repair will fail quickly under high temperature and cyclic vibration. Replace new rubber hose directly once leakage or cracks appear.

Q：How to inspect rubber hose during daily maintenance?
A：Check hose surface for cracks, swelling and coolant seepage before heavy-load operation. Inspect tightness of hose clamps. Focus inspection on bell mouth ends and bending areas, these parts are most vulnerable to aging and leakage.

Q：Can this rubber hose fit other loader models?
A：This rubber hose is custom made for XCMG wheel loader. Length, inner diameter and bell mouth shape are exclusive. It cannot be fitted directly on other models without modification. Wrong replacement will cause poor sealing and leakage.

Q：How long is the service life of this cooling rubber hose?
A：Service life depends on operating temperature, coolant quality and working vibration. Visual inspection every 3 months under normal working conditions. For quarry and mining sites, inspect monthly and replace when cracks or swelling occur.