What Are the Causes of Power Steering Hose Fitting Oil Leakage?

1 Answers
SanRicardo
07/29/25 10:46pm
The causes of power steering hose fitting oil leakage are as follows: 1. Connection Parts: Inspect all connection parts in the steering system, including the hoses, oil reservoir, steering gear, and steering pump. 2. Loose Hose: If the inlet hose at the pump is loose, oil leakage often occurs at this point. Therefore, it is essential to avoid any impact on the pump's inlet hose at all times (the hose is press-fitted into the pump body with an interference fit). 3. Inspect the Interface Between the Hose and the Steering Pump: If there is oil leakage at this point, replace the sealing ring and tighten the installation bolts on the hose. This issue is unrelated to the oil quality, and there is no need to replace the steering pump. 4. Poor Cleanliness: If oil leakage occurs at the reservoir, it may be due to poor cleanliness within the steering system, causing the spool in the steering pump's flow pressure control valve to be blocked by foreign objects. When turning the steering wheel rapidly, the return oil pressure in the pump's reservoir becomes too high, and the pump's outlet is blocked. This often results in pressure oil leaking out through the air vent on the reservoir cap, creating the illusion of a steering pump oil leak.
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