Window Bushes with Fitting Position Front and Rear, Front Axle for FORD FAIRLANE ZC, ZD

Window regulator bushes support the pivot and sliding points inside a power window regulator, the mechanism that raises and lowers the door glass. When these small bushes wear, the glass can move unevenly, travel slowly, clunk at the top or bottom of its travel, or sit crooked in the frame. Replacing worn bushes can restore smooth window operation without replacing the whole regulator, provided the rest of the mechanism is sound. Fitment is specific to each regulator design, so use the vehicle search to find window regulator bushes to suit your ZC, ZD FAIRLANE.

How a ZC, ZD FAIRLANE Power Window Regulator Works

A power window regulator sits inside the door, behind the trim panel. Its job is to convert the turning motion of an electric motor into the straight up-and-down movement of the glass, while keeping the glass level in its channels.

There are two common designs. Arm-type regulators, often called scissor regulators, use one or two steel arms that pivot as a toothed sector gear is driven by the motor. The ends of the arms slide along channels attached to the glass and the door. Cable-type regulators use a motor-driven drum that winds a steel cable around pulleys, pulling a glass carrier up and down along a guide rail.

Both designs rely on pivot points and sliding contact points that move every time the window is used. Those points are where bushes, rollers and sliders sit, and they are the parts that wear first.

What Do ZC, ZD FAIRLANE Window Regulator Bushes Do?

Window regulator bushes sit at the pivots and sliding points of the regulator. At a pivot, the bush lets the arm rotate smoothly around its pin without metal grinding on metal. At a sliding point, the bush or slider lets the arm end travel along its channel while keeping it located, so the glass carrier cannot rock or jam.

Together, the bushes keep the regulator moving freely and hold its parts in the right relationship to each other. That keeps the glass level as it travels and lets the motor move it without straining. When a bush wears, the clearance at that point opens up. The arm or carrier can then shift, tilt or bind, and the problem shows up as uneven or noisy window movement.

Signs Your ZC, ZD FAIRLANE Window Regulator Bushes May Be Worn

Common signs include glass that moves jerkily or unevenly rather than in one smooth motion, and windows that travel more slowly than they used to or slow down partway through their travel. You may hear clunking, clicking or grinding from inside the door as the window moves, particularly when it starts or stops.

Glass that sits crooked in the frame, tilts forwards or backwards as it travels, or does not seal fully at the top can also point to worn regulator bushes, since a worn pivot lets one side of the glass lag behind the other. A window that rattles in the door over bumps when partly open is another common sign, because the regulator is no longer holding the glass firmly.

Other Possible Causes

These symptoms are not unique to worn bushes. A failing window motor can run slowly or intermittently, and a worn or faulty switch can cause the window to stop or move erratically. On cable regulators, a frayed or stretched cable or a broken pulley can produce clunks and uneven travel. Dry or damaged glass run channels can also slow the glass. Have the cause confirmed before replacing parts, since a new bush will not fix a motor, switch or cable fault.

Why ZC, ZD FAIRLANE Window Regulator Bushes Wear

Window regulators work in a harsh environment. Water runs down inside the door every time it rains or the vehicle is washed, which is why doors have drain holes at the bottom. Dust and fine grit find their way into the door through the window seals, and that grit mixes with any lubricant on the regulator to form an abrasive paste.

Temperature also plays a part. The inside of a door panel can get very hot when the vehicle is parked in the sun, and repeated heat cycles harden and crack plastic bushes over time. Vibration adds further wear. Vehicles that spend time on corrugated or unsealed roads put constant movement through the regulator and its bushes, even when the window is not being used.

ZC, ZD FAIRLANE Bush Kit or Full Regulator Replacement?

A bush kit is the right repair when the bushes are the only worn parts. If the regulator arms are straight, the sector gear teeth are intact, the motor runs strongly, and on cable regulators the cable and pulleys are in good condition, replacing the bushes can restore smooth operation for far less than a complete regulator.

A full regulator may be needed when other parts have failed. Bent arms, stripped gear teeth, a frayed or broken cable, a cracked pulley or a motor that is failing all mean the bushes alone will not fix the problem. Inspect the whole regulator once the door trim is off, and decide based on its overall condition rather than the symptom alone.

Check the Fitting Position on Your ZC, ZD FAIRLANE

Front and rear door regulators are often different designs, even on the same vehicle, and left and right sides can be mirror images of each other. A bush kit designed for a front regulator may not suit a rear one. Before ordering, confirm which door or doors need attention, and check that the bush kit suits that regulator position. Note how many bushes the regulator uses, so you know whether one kit will cover a single regulator or more.

Fitting ZC, ZD FAIRLANE Window Regulator Bushes: An Overview

Replacing regulator bushes involves removing the door trim panel, which is usually held by screws and plastic clips, and disconnecting the switch and any other wiring attached to the panel. The plastic moisture barrier behind the trim is then peeled back carefully so it can be resealed.

Depending on the design, the bushes may be replaced with the regulator still in the door, or the regulator may need to be removed. Some regulators are riveted in place, and the rivets need to be drilled out and replaced with suitable fasteners. Follow the vehicle's service instructions where available. Once the new bushes are fitted, run the window through its full travel several times before refitting the trim, checking that it moves smoothly and seals fully at the top.

Safety When Working Inside a ZC, ZD FAIRLANE Door

Support the glass before disconnecting it from the regulator. Glass that drops inside the door can break or damage the regulator, so tape it to the frame in the raised position or support it securely by hand. Keep fingers clear of the regulator arms while the window is being operated, since the mechanism can pinch with considerable force.

Some manual regulators, and some power regulators, include a counterbalance spring that stores tension and can release suddenly if the regulator is dismantled without care. The edges of door inner panels can also be sharp, so wear gloves. If the door contains airbag components or sensors on your vehicle, follow the service instructions for working near them, or leave the job to a technician.

Keeping ZC, ZD FAIRLANE Power Windows Working Smoothly

A few simple habits reduce strain on the regulator and its bushes. Keep the glass run channels clean, since dirt and grit in the channels add friction that the regulator has to overcome. Release the window switch once the glass reaches the top or bottom, rather than holding it, which keeps the motor and regulator from straining against the stop.

Check that the door drain holes are clear, so water does not pool inside the door and corrode the regulator. In cold conditions, free a window that has frozen to its seal before operating it, rather than forcing it with the motor. If a window starts to sound or move differently, have it looked at early, before a worn bush causes wear elsewhere in the regulator.

Choosing the Right ZC, ZD FAIRLANE Window Regulator Bush Kit

Window regulator bushes are specific to the regulator design. The size of the pivot pins, the shape of the sliders and the way each bush locates in the arm all vary between makes, models and sometimes model years. A bush designed for a different regulator will not hold the arm securely, even if it looks similar.

Confirm your vehicle's make, model and year, which doors are affected and whether the regulator is an arm or cable design before ordering. If several windows are showing the same symptoms, it is often worth replacing the bushes in all of them while you have the tools out, since regulators of the same age tend to wear at a similar rate.

Shop ZC, ZD FAIRLANE Window Bushes with Formula 4x4

Window bushes are part of the Formula 4x4 chassis parts range, with sun visor clips for the other common cabin wear point.

Start by confirming the cause is worn regulator bushes rather than the motor, switch or cable. Search by your ZC, ZD FAIRLANE to find window regulator bushes to suit it, and check the fitting position for each door you plan to repair. If you are unsure which part your ZC, ZD FAIRLANE needs, contact the Formula 4x4 team.