A: Common indicators include unusual knocking or rattling sounds between the engine and main pump, increased chassis vibration, visible rubber dust accumulation inside the bell housing, and sudden hydraulic power loss while the engine is running.
A: Technicians must verify perfect axial and radial alignment between the engine flywheel and the hydraulic pump shaft. Clean all splines thoroughly, apply a light coat of anti-seize lubricant, and torque all mounting bolts evenly to OEM specifications.
A: Please cross-reference part number 191-6933 with your machine parts manual. Providing our team with your excavator serial number prefix, along with the engine model name or the number of splines on the inner hub, ensures a 100% correct match.
A: The high-resilience rubber element undergoes advanced curing to prevent hardening or cracking during severe temperature fluctuations. It maintains its structural elasticity and full torque load capacity across a working range of -35 to 110 Degrees Celsius.
A: We provide original, OEM, and high-quality aftermarket versions with stable supply capability.
Q:Why Choose RITO?
A:Listed Factory
Stable&Reliable Quality
OEM Factory for Chinese Top Excavator Brands
Supplier to Fortune 500 Companie





















