612630030005 Steering Pump

The 612630030005 Steering Pump is a key hydraulic part for the power steering system of SHACMAN heavy-duty trucks with WP12 engines (tractor, dump, cargo trucks). It turns the engine's mechanical energy into hydraulic energy, sending stable high-pressure oil to the steering gear-this makes the steering wheel easier to turn, enabling light and smooth steering. It's super important for driving comfort and control when hauling heavy loads or driving long distances.

We use good materials and precise hydraulic tech to make it: the pump body is high-strength aluminum alloy-light and not easy to rust. The internal rotor and vane are high-hardness alloy steel (HRC 55-58) that's been precisely ground, and the seals are imported fluororubber-can handle high temps, high pressure, and hydraulic oil. The input shaft fits the SHACMAN WP12 engine's PTO perfectly, so power transfers steadily without slipping. It handles tough conditions-engine vibration (8-500Hz), 110℃ hot oil, and dust/mud-without the pump body bending, rotor wearing out, or seals aging. It fits the original SHACMAN WP12 steering system exactly: same mounting bracket, oil port size, and input shaft specs as the original. Swapping it is easy: no need to change the PTO or hydraulic pipes, just take off the old pump's bolts and oil pipes, put the new one on, and tighten the bolts to 25-30N·m. Before shipping, we test 'em strict: check oil pressure stability, make sure no leaks at 16MPa, and run it for 200 hours straight-so it's reliable.

Stable hydraulic output: The precise rotor and vane keep the pump's efficiency over 94%, maintaining 10-14MPa stable pressure when steering. No sudden changes in steering force, so driving control stays consistent.

Strong wear resistance: The hard alloy steel rotor/vane and imported fluororubber seals last 40% longer than ordinary steering pumps-over 300,000 km service life.

Perfect for SHACMAN WP12: Made exactly to SHACMAN's WP12 engine design-input shaft, mounting holes, and oil ports all match the original steering system. No adapter shafts or pipe changes needed during installation-saves 25% maintenance time vs universal pumps.

High-temperature resistance: The pump's heat dissipation and high-temp seals let it work normally even when oil hits 110℃-no seal failure or oil viscosity issues from heat.

This Steering Pump (Model: 612630030005) is only for SHACMAN heavy-duty trucks with WP12 engines-X3000 tractor, F3000 dump truck, M3000 cargo truck with original steering system. It won't work on SHACMAN trucks with other engines (like WP10, WP13) or other brands (FAW Jiefang, Dongfeng Tianlong). Those have different PTO structures, hydraulic pressure levels, or mounting space-this pump won't fit or work.

Product Model: 612630030005

Applicable vehicles: SHACMAN trucks with WP12 engines (X3000 tractor, F3000 dump, M3000 cargo)

Type: Vane-type power steering pump (WP12 engine-specific)

Function: Mechanical→hydraulic energy, power steering system

Material: Pump body (aluminum alloy); rotor/vane (alloy steel HRC 55-58); seals (imported fluororubber)

Installation: Direct replacement-fits original PTO, bracket, oil ports

Working conditions: 10-14MPa rated pressure; 12L/min max flow; -25℃~110℃ oil temp; ≤3000r/min shaft speed; ≥300,000 km life

Q1: Works on SHACMAN trucks with WP13 engines?

A1: No-WP13's PTO and hydraulic pressure are different. It won't connect, or it'll damage the steering system. Get the pump for WP13 engines instead.

Q2: Steering wheel stiff after new pump install?

A2: First check hydraulic oil level (use No. 46 oil; low level reduces supply). If good, check oil inlet pipe for blockages/air leaks. If pipe is normal, check PTO connection. Still stiff? The pump's oil passage may be blocked (rare)-replace it.

Q3: How to maintain the steering pump?

A3: 1. Change oil and filter every 30k km (no inferior oil); 2. Check pipe joints every 5k km (stop air getting in); 3. Clean pump surface often for good heat dissipation.

Q4: Need to bleed the steering system after new pump install?

A4: Yes, definitely. Air in the pipeline causes noise, low pressure, and pump damage. Bleed by idling the engine and turning the steering wheel left/right to limits until smooth.

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