The water leakage in Y-shaped pipes is due to two main defects:

1.Structural flaw: The tee design causes pressure fluctuations when fluid turns, leading to joint micro-displacement.

2.Seal flaw: Rudimentary O-ring design lacks elasticity, easily deforming under pressure to create leaks.

Y - pipe Solutions

1. Modify O - ring cross - section to increase friction surface.

2. Replace with elastic materials to reduce compression ratio.

3. Add multiple sealing layers to enhance water - tightness.

Rear oil seal problem of crankshaft：

1.Improper installation of crankshaft rear oil seal in maintenance causes oil leakage.

Solution for crankshaft rear oil seal：

1.Implement two limit rods for balanced positioning to assist installation.

High pressure oil pump issue：

1.Fuel leakage from the high-pressure fuel pump dilutes the engine oil, which in turn causes axle bearing scoring.

High-Pressure Fuel Pump Solutions：

Upgrade to Fluororubber (FKM) Seals

1.Enhance resistance to gasoline and ethylene glycol corrosion

2.Reduce deformation risk through material performance optimization

路虎问题点.pdf