The belt the drives a power-steering hydraulic-fluid pump is generally at the front of the engine, turned by a pulley-block on the crankshaft.

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It is typically separate indigenous the belt the drives the water pump and alternator, however it might drive other components and the power-steering pump.

A slack belt has tendency to slip, wears fast and may even break; it additionally makes the steering feel jerky or heavy.

A slipping belt sometimes gives itself far by a loud screeching noise, an especially when you start the engine indigenous cold. The tension of the belt have the right to be adjusted to stop it slipping.

The pump is pivoted so that you have the right to swing the in or the end from the engine to change the belt tension. Relocating the pump far from the engine boosts the tension. As well as a pivot bolt there is an adjuster bolt that slides in a slot. Part cars additionally have a slotted-link adjuster.

Inspect the belt, in addition to the remainder of the power-steering device (See check power-assisted steering), at the very least every 6 months; in ~ 6,000 miles or 10,000 km; in ~ the intervals encourage in the vehicle handbook; and, of course, at any kind of time you suspect that it may be slipping.

On many cars girlfriend can inspect the belt by looking under inside the engine compartment. On a few, you might need to raise the front of the car on ramps and also inspect native underneath.

Check for both wear and also tension. If you find that the belt is loose, change it at once. If that is worn, change it as quickly as possible.


If friend buy a new belt, compare it v the old one come make certain that the is the exact same size and an approved make.


After adjusting or instead of the belt, test drive the car on a quiet road to inspect the steering. A brand-new belt will stretch slightly after around 100 mile or 150 km. Readjust the then.


Checking and also adjusting the tension


Make sure the pulleys at each end of the belt room in line. Put a straight-edge in between the pulleys; both must be parallel with it.


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pull the belt difficult away native a straight-edge to measure up deflection.

To check the tension, put a straight-edge along the external edge that the belt. If the belt go round more than 2 pulleys, usage the longest run of the belt.

Use your thumbs to push the belt inwards at its mid point, pushing fairly hard.

Measure how far you can push the belt native the straight-edge: you might need a helper to carry out the measuring.

The car handbook should give the exactly amount that deflection. If not, 3/8 in. (10 mm) is around right. Compare her measurement through the deflection figure given in the handbook, and readjust the belt accordingly.


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Slacken the adjuster bolt slightly, yet do not eliminate it.

Slacken the adjuster bolt slightly. Then an extremely slightly slacken the pivot bolt or bolts till the pump simply starts to move.

If the belt was also tight, the pump will relocate inwards in the direction of the engine as the bolts are slackened. To get the correct tension, pull it the end slightly.

If the belt was also slack, boost the anxiety by levering the pump outwards with a solid screwdriver or flat bar.

Lever versus the cast front finish of the pump body, just behind the drive-belt sheave — not versus any other part of the body or pipework, which are easily damaged.

Rest the other finish of the lever against a sturdy component of the pump mounting clip on the engine.


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Slacken the pivot bolt or bolts slightly, yet do not remove.

Check the belt tension while you host the pump in position. Measure up the deflection native a directly edge.

When the anxiety is exactly tighten the adjuster bolt. Inspect the stress again before tightening the pivot bolt or bolts.

Re-check and readjust the as necessary until that is correct with the bolts totally tightened.


checking belt wear


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inspect the belt top top both sides for nicks, cuts, fraying and score marks.

Inspect every inch of the belt ~ above both sides. Look because that nicks, cuts, fraying, scores and also cracks. Flex the belt to open up up any type of cracks.


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Flex the belt to open up up any cracks.Replace a worn belt as shortly as possible.

Check the lengths the the belt between the pulleys and also mark them v chalk. To expose the rest of the belt for inspection, revolve the engine slightly with a spanner on the crankshaft-pulley nut.


Keep your hair, tie or any loosened clothing clean of the turning belt.


replacing a belt


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ease the belt ~ above the pulley.

Never try to lever off the old belt, you may damage the pulley.


Slacken the adjuster and also pivot bolts, and push the pump inwards by the actors front plate until the belt is slack enough to lull off.

Do not push versus any other component of the pump or pipework, or friend may damage it.

Remove the old belt. If it is the outermost of number of belts on the engine, remove is straightforward. If not, you may need to unfasten some other belt or belts (See Checking, adjusting and refitting drive belts) prior to you have the right to remove it.

Fit the new belt, making certain that it is effectively seated.

Pull the pump outwards and adjust the tension.

Refit and re-tension any kind of other belts you may have had to unfasten.

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Readjust the power-steering belt after about 100 mile (150 km) that driving.


Slotted-link adjuster


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rotate adjuster bolt until tension is correct. On part cars, belt anxiety is varied by one adjuster bolt bearing ~ above a slotted arm v a sheave at the end.The eight swings ~ above a pivot bolt, and has a locking bolt with the slot - loosen both bolts and totally free the adjuster bolt locknut. Turn the adjuster bolt to stress and anxiety the belt, climate tighten the pivot and also locking bolts, check belt stress and anxiety at each stage.Finally, tighten the adjuster bolt locknut.