We recommend thoroughly cleaning the area where the leak is occurring. Oil leaks at joints are generally not caused by the power steering pump or the
steering gear; please handle this with care to avoid misdiagnosis.
1) All assemblies consisting of hollow bolts and brass washers are single-use; once disassembled, they must be replaced.
2) Oil seepage caused by loose bolts is not a power steering pump failure.
3) Oil leaks caused by defects in fittings or hoses are not power steering pump failures.
4) Oil leaks at the bolts connecting the P10/WD12/WP12NG power steering pump to the engine are not power steering pump failures.
If oil leaks occur at the fittings of the steering gear, power steering pump, or power steering cylinder, do not replace the steering gear or power steering pump. Instead, check
whether the fittings are loose, or replace the composite sealing gasket (fitting bolt torque: 70–90 N·m for hinged bolts, 90–110 N·m for ferrule-type
bolts: 90–110 N·m). After tightening, wipe the leaking area clean, start the vehicle, and let it run for 5 minutes. If the leak persists,
then determine whether the oil pump is leaking and whether it needs to be replaced.
5) If there is an oil leak at the mating surface between the oil pump and the engine or air compressor, do not immediately replace the entire oil pump assembly. Instead, first replace the sealing
or gasket, or apply sealant to the mating surface (ensuring the sealant is spread evenly). During reassembly, ensure the oil pump’s mating surface is flush with the engine’s or
air compressor’s mating surface. Then wipe the leaking area clean, start the vehicle, and let it run for 5 minutes. If the oil leak persists,
determine whether the oil pump is leaking and decide whether to replace it.

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