TDZ Power Steering Kit

The only "bolt-on" kit available on the market

Designed for Series SI,II,IIA & III Land Rovers

The TDZ power steering system can be fitted to any LHD or RHD Series Land Rover with the std 4 cylinder engine (Diesel or Petrol) This bolt-on system will assists you when you need it most: parking and low speed maneuvering etc. However, it will not alter the steering geometry, steering behavior (at any given speed) nor will it change the turning circle.

Fitting

The system is easy to fit. No cutting, drilling or welding to the chassis is required . The kit fits to the standard (original chassis) holes and uses existing bolts/threaded holes. In some cases the drilling of two holes are required to mount the reservoir to the body panel / radiator frame. The system can be fitted in one day. If required, it can be converted back to the original steering system in a matter of hours.

Personal kit / conversion

We like to see our power steering as a system that belongs to the driver not to the vehicle. This is because it's very easy to take the system off the vehicle and convert it back to it's original steering, in case you want to change Land Rovers.

Safety

The system is very reliable and safe as it has proven in the last 40 years when this kit came to the market in Spain. The safety is provided by the simple fact that in case of hose breakage / engine stall / loss of the hydraulic pressure, the vehicle will not be left without steering nor will it cause the ram cylinder to block, instead it will allow the steering to move and to act as a normal manual steering. This is because the specialy designed valve system in the power steering cylinder allows the hydraulic fluid circulate without resistance through the system while the steering wheel is moved in a normal manner.

For ordering, please check out our on-line store or visit the dedicated website / on-line store of the manufacturer: TDZ Power Steering Systems

The Power Steering system consists of:

Hydraulic Ram cylinder incl. valve system (11) + steering rods/linkages (10 & 12)
Ram mounting bracket (13)
High flow hydraulic vane pump (5) + mounting bracket (4), pulleys (2 & 3) and v-belt (1)
Hydraulic fluid reservoir, including filter element (8) + mounting bracket + fixings (9)
All high pressure and return hoses (6 & 7)
Full fitting instructions

all compnents of the kit unpacked box

Left you see all the components of the kit and right you see the 'unpacked' box as you receive it.

Advantages of this power steering system

The force needed to operate the steering wheel is reduced to only a fraction of that if the original effort. This much smaller force is then amplified by the ram cylinder to more then 6 times. This allows the driver to carry out those "heavy" maneuvers which otherwise required the maxium effort, for example; while parking, driving slowly to hitch a trailer, in difficult terrain etc.. The physical force (couple) applied to the steering wheel, however, will always give proportional amplification to the road wheels. As a result the vehicle will steer prompt, smooth, precise and above all safely.

The ram is located at the end of the steering link and applies the force directly onto the wheels. This means that the rest of the linkages between the steering wheel and ram cylinder, like steering box and steering relay, including ball joints, are not subject to excessive forces that otherwise where applied to the system and thus reduces wear and increased back lash in the steering box.

The ram system will also act as a hydraulic damper/stabilizer, absorbing the steering vibrations/movements that travel from the wheels, through the steering system back to the steering wheel giving better control and terained feel.

The original self centering effect, while driving out of corners etc., is not affected, if adjusted properly. The power steering system's vavle is designed in a way that it allows to let through forces comming from the wheels that make the steering self center / drive straight (provided the toe-in and caster/camber settings are correctly set-up)

Technical details of the power steering ram cylinder

Summary

Better maneuverability while parking, driving through/difficult terrain and when running larger/wider sized tyres
Better control over the vehicle at both slow and high speed
The stabilizing effect of the hydraulic cylinder which increases the safety of the vehicle
No drastic changes or modifications are needed to fit the kit (and if required a full reconstruction of the original steering system is possible within a matter of hours).
Simple bolt-on conversion, all parts are supplied.
Standard hydraulic components and seals are used for easy maintenance/repair

Safety notes:

- In case of breakdown of the hydraulic system the vehicle is not left without steering, instead it will continue to act as normal manual steering since the valves and cylinder will circulate the hydraulic oil without resistance through the system allowing the necessary steering movement.

- For correct and safe operation of this power steering system the complete steering set-up; steering box, steering relay and all ball-joints, must be in "as new" condition.