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Drivestar 21-157 Power Steering Pump for 06-2007 Mercedes R500 ML500 5.0L ML350
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ITEM DESCRIPTION
- QUALITY - 100% tested before shipping. Guaranteed exact fit for PLUG PLAY
-
FUNCTION -
An efficient power-assisted steering systems could helps you steer and
control your vehicle easily. With the power steering pump, you don’t
need to make much effort when making simple turns or driving at low
speeds. It not only makes your car safer on the road but also gives you a
more pleasant and smoother driving experience
- SUGGESTION - Use the correct power steering fluid; Flush out the power steering fluid in the lines before removing the old pump; Bleed air out of the system per bulletin enclosed (Air in a power steering system will cause noise)
PART COMPATIBILITY:
Maintenance, Signs of Wear & Troubleshooting
Good Maintenance Practices
Use the correct fluid type that meets O.E. specifications for your vehicle
Flush system with fluid to remove debris and contamination
Install a filter to eliminate potential restrictions from debris
Check for collapsed hoses that could potentially cause a restriction
Always replace sealing O-Rings
Never use Teflon tape as an attempt to seal fittings
Signs of Wear and Troubleshooting
1、Stiff steering wheel.
2、Slow response of steering wheel.
3、Squealing noises when the vehicle starts.
4、Whining noise while turning the wheel.
5、Groaning noises.
Precaution of installing Power Steering Pump
Please pay attention to the following instructions during the Power Steering Pump installation,to avoid any loss.
1. To prevent any trash and metal chips inside hydraulic pipe flowed into the pump,thus oil leak,abnormal noise and turning hard happened,steering system hydraulic pipe wasted oil should be released and cleaned.
2. Before assembling the high pressure connector,enough fresh hydraulic oil should be poured into the pump from high pressure oil mouth to avoid non oil absorption in low speed,then install the high pressure pipe connector and other pipeline ,all the pipeline joint should be fixed tightly without loose or oil leaking hidden trouble.
3. Enough steering oil should be poured into the oil reservoir,start the engine,drive the steering pump in low speed,and make sure the whole steering system full with steering oil,meanwhile,the fluid level of oil reservoir will be dropped rapidly during the oil pouring,so continuous oil filling is required to prevent air absorption in the pump.
4. Turning the steering wheel from one limiting position to another limiting position,and repeat 10-15times.
Don't stop in the limiting position over 5 seconds.
Don't use over strength in the limiting position,otherwise the fluid stays foamy.
Repeat the above action,until no bubble leaked out.
5. In the process of installing pump transmission belt,tension force should be moderate,otherwise,abnormal abrasion & noise,premature damage,oil leakage & hard steering force will be shortly happened in case of too tight tension force.
6. All standard operation should be followed during the installing,hammer and other objects knocked is strictly forbidden.We are not responsible for any nonstandard installing damage,except the quality defect.
Note: Abnormal noise and reservoir oil foam will be happened during the trial run unless correct venting,because of remained air stayed in steering system,affer running 10-20kms,all the remained air will be released,and the noise will be disappeared.
FAQ
Q1 Q: Why is the pump making a whining noise all of the time?
Q2 Q: Why do I still have hard steering in one direction after I replaced the pump?
Q2 A: The problem is not in the pump, it is in the steering gear. The pump would cause a steering problem in both directions.
Q3 Q: I bought a replacement power steering pump and my original pulley has a loose fit on the replacement pump shaft. What should I do?
Q3 A: The end of the original pump's input shaft enlarged causing the pulley hole to increase during removal. The pulley must be replaced.
Q4 Q: I only have assist when increasing engine rpm after installing the replacement pump. What's causing this?
Q4 A: Most likely cause is contamination. Remove the pressure hose and pressure fitting on the power steering pump. Remove the flow control valve and spring. Clean the valve and check the valve bore for damage. Reinstall the spring, valve, fitting and hose. Flush and bleed system and re-test. If okay, install power steering filter to prevent problem from re-occurring.
DRIVESTAR Power Steering Pumps are completely NEW with no refurbished components and no core is needed. The Internal components of each pump are designed to meet or exceed OEM standards and are ready to install. This high-quality replacement steering pump would be a guaranteed exact fit for the steering pump in your vehicles.
This part may also be referred as: Power Steering Pump, Hydraulic Power Assist Pump
All DRIVESTAR Power Steering Pumps are backed with 1-Year Warranty.
WARRANTY POLICY
DRIVESTAR AUTOPARTS warranty policy consists of 1-year warranty, 10-years warranty and limited lifetime warranty, which respectively applies to the parts explicitly stated in the product descriptions.
To obtain performance of the warranty, you have to contact us, return the product for inspection, and most of all pay attention to the following points as well.
The warranty is only valid for a one time replacement and limited to the original customer who is the owner of the vehicle provided that the ownership has not changed since the installation of the unit.
To file a warranty claim, you are required to provide a dated purchase receipt or other written proof that the product within the warranty period, an image of the warrantied part not attached to the vehicle, and an image showing the part stamp, if visible, on the warrantied part.
If for any reason a replacement part is not available, we will reimburse you the original purchase price of the part less shipping and handling charges.
Please be aware that the shipping fees on both ways are at your expense.
The warranty does not apply to failures caused by misuse, negligence, modification, abuse, improper application, installation or operation, or by unauthorized service or use of unauthorized parts in connection with the product and inadequate maintenance, normal wear and tear or normal consumption of the product.
We will not be liable for any incidental, direct, indirect, punitive, actual, consequential, special, exemplary, or other damages, including loss of revenue or income, pain and suffering, emotional distress, any form of bodily injury, property damage, damage to other parts of the vehicle in which the parts was installed, or similar damages, even if one of us has been advised of such damages.
This warranty is in lieu of all other express warranties. Any warranty implied by law, whether of merchant-ability or fitness for a particular purpose or otherwise, is limited to the period that this express warranty is effective.
