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Pro Power Steering Ltd. / Lakeside Auto Garage - Tel: 01708 60 66 22
Unit 2a, Manor Road, West Thurrock, RM20 4BA, Grays.

Power Steering Racks

Power Steering Racks are sometimes referred to as Rack and Pinion steering racks this is because the steering unit consists of a main rack shaft with a small pinion. The pinion shaft is attached to the vehicles steering wheel via linkages, the pinion inside the unit has small teeth, that mesh into the main rack shaft.

This converts the steering wheel rotation into lateral movement that then moves the road wheels to steer the vehicle. This system requires fewer linkage parts resulting in substantial weight savings and is very popular with most manufactures today.

How does it work?

Steering Rack
The main rack shaft in a power steering rack has a piston attached to the shaft and the pinion has a control valve built around it. When the pinion valve is turned it controls the fluid that is supplied by the power steering pump and directs the fluid to piston attached to the main rack shaft then the fluid forces against the piston to give the steering assist (i.e. power assisted steering).

Power Steering racks are designed extremely well by each vehicle manufacturer, they are very compact and they need to be so they can fit into our modern-day motor vehicles, but with all this design criteria the under bonnet temperatures are getting higher and higher this can cause some problems. The most common problem with most power steering is leaking fluid out of the unit. The next common problem is the wear and tear on the unit like free-play due to excessive use of the steering unit or lack of maintenance on the vehicle.
To fix these issues the steering system need to be checked on regular intervals, Ultimate Power Steering recommend's that the system is inspected by your mechanic at each service. We also recommend that the Power Steering Fluid be replaced at least every 30,000miles or 2 Years this will insure that the system functions correctly for as long as possible this will save you money.

steering rack ends If the steering rack is found to be leaking or it has excessive wear and tear it will need to be replaced or it can be remanufactured. We recommend the remanufacturing option as it is the most cost effective result and it is also a lot kinder to our environment. The remanufacturing process is less polluting than a new unit, because we recycle approximately 65 to 80% of the original steering unit.
At Ultimate Power Steering you can have confidence in us as you're guaranteed Quality and Service with all our products.

Manual Steering Racks


Manual Steering Racks are sometimes referred to as Rack and Pinion steering racks, this is because the steering unit consists of a main rack shaft with a small pinion. The pinion shaft is attached to the vehicles steering wheel via linkages, the pinion inside the steering rack has small teeth, that mesh into teeth on the main rack shaft. This converts the steering wheel rotation into lateral movement that then moves the road wheels to steer the vehicle as you drive.
This system requires fewer linkage parts resulting in substantial weight savings and is very popular with most manufactures today.

The most common problems with most manual steering racks are wear and tear on the unit. As the steering rack is out of sight and out of mind the manual steering rack is generally not looked at until it has major issues. Issues like free-play due to worn main shaft bush or free-play in the inner rack ends due to misuse, excessive use or lack of maintenance on the vehicle.

To fix these issues the steering system need to be checked on regular intervals. Ultimate Power Steering recommend's that the steering system is inspected by your mechanic at each service, this preventive maintenance will insure that the system functions correctly for as long as possible and this will save you money in the long run.

Technical - Racks

The photos below are a badly rusted Toyota Hilux Power Sterring Rack Shaft.
toyota rack
Toyota Shaft
Rust is the largest issue faced with the sealing of the power steering fluid. Some manufactures do not install enough lubrication inside the rack boots and over time the rack shafts rusts. Once the rust has damaged the shaft, the rack shaft seals cannot retain the fluid and the steering rack will leak. In most cases this can be prevented by removing the rack boots and installing some grease to lubricate the shaft to prevent any rust from forming. 

Other problems with steering racks are wear and tear on the rack shaft and pinion teeth area. As the steering rack is out of sight and out of mind the steering rack is generally not looked at until it has major issues. Issues like free-play due to worn teeth areas or free-play in the inner rack ends due to misuse, excessive use or lack of maintenance on the vehicle.
steering racksIn the cases of worn teeth areas the only way to rectify this is to replace the hard parts i.e. the main rack shaft and the pinion, this is very costly, so to help save your money we recommend that your steering system is inspected by your mechanic at each service, this preventive maintenance will insure that the system functions correctly for as long as possible and this will save you money in the long run.

Example of recondition racks

-Audi

-BMW

-Ford

-Jaguar

-Porsche

-Renault


ProPowerSteering Ltd. / Lakeside Auto Garage is your number one choice for garages in West Thurrock, Essex and the surrounding area.