Tip & How-To about 2000 Ford Focus

Replace the fan belt tensioner on a 2000 ford focus

The pulley wheel bearing on the auxiliary drive belt tensioner, which does not come as a separate part from ford, was showing signs of wear so I decided to replace the tensioner.

It's not a simple "whip the old one out" and "stick another one in" as the information in my Haynes manual suggests. In fact the information in my Haynes Service and Repair Manual - Ford Focus 1998 to 2001 (S to Y reg) Petrol and Diesel.

Also, looking under the car it appeared that the Power Steering Pump is bolted onto, or on top of, the tensioner which means the power steering pump may have to come off in order to remove the tensioner. Not so simple a job as the Haynes manual describes.

Investigation Work:

I have discovered there are three, 15mm nuts (Torqued to 48Nm) securing the Tensioner, two below the power steering pump and one above, identifiable by three protruding studs with T40 torx ends. An E8 torx spanner would be necessary if it were proposed to remove these studs.
In addition, I have also discovered that the power steering pump, secured with four, 10mm bolts, is bolted directly on top of the tensioner, piggy back style (There are four bolt holes in the tensioner body for mounting the power steering pump). So in order to remove the tensioner, it is also necessary to remove (and drain) the power steering pump. An alternative method of removing the tensioner might be to unbolt the pump (without draining) and move it to one side out the way while the tensioner is being removed.

Creating More Workspace:

It is necessary to remove the CAC to inlet manifold pipe (drivers side) i.e. the wide, black pipe bolted to the top of the engine, to gain access to the P.S. pump and move the Engine Coolant Resevoir to one side.
Also, to make the process easier and create additional space, it may be helpful to remove the following additional items from the car:

  • fuel filter (and plastic retaining clip).
  • oil filter (to make access easier to the nuts bolts and pipes from below the car)
  • the EGR cooler connection pipe (optional).
Essential Items:

  • 15mm Deep, Hex Socket and large 15mm Ring Spanner - tensioner mounting nuts
  • E8 Torx Spanner for removing 3 studs with T40 Torx ends (method 2 only)
  • 18mm (or 3/8W, 7/16BS) Crowfoot wrench for removing union nut on HP pipe power steering pump. (method 1 only)
  • 10mm ring or combination spanners, long and short (P.S. Pump).
  • 10mm, hex socket ( narrower 3/8" drive preferred) - power steering pump bolts (Methods 1 and 2)
  • Hose Clamp (clamping bottom hose power steering pump)
  • Teflon seal / o-ring for union on HP Line, Power Steering Pump or new union (See Notes 2 & 3)
Teflon O-ring:

Here is a general description of the "external" O-ring on the Power Steering Pump HP union. Someone may be able to find a supplier for the o-rings on the Internet Note that the "internal" black, rubber o-ring is also an integral part of the replacement union.
  • Colour: White
  • Material: Teflon (PTFE)
  • Cross Sectional Area: 1mm x 1mm (square)
  • Outside Diameter .......... 16.5mm
  • Inside Diameter .............14.5mm
Note that sizes are approximate as the o-ring may have expanded slightly as I was removing it from the union. The diameter of the groove the o-ring sits in is 14mm.

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Related Questions:

1 Answer

Belt come off how do I reattach


Michelle. There are several install procedures that vary by vehicle. Different manufactures use different setups some only require releasing tension on the belt tensioner with a 1/2" drive ratchet or breaker bar or most any type pry bar to replace a belt. That set up is usually only on vehicles with a serpentine belt, the big wide flat type of belt that drive most the engine components. Other manufactures may require you to loosen the belt with a wrench of some type via a pulley mounting bolt and then set the tension by wrench adjustment of another bolt that the mounting bolt locks in place. Most of the time its not really a fix to just reattach a jumped belt. Before you go much further you need to first determine why the belt came off. This is not a normal occurrence. There are several possibilities such as: The belt is worn out . . . when a belt wears out it often has reinforcement fibers in it that break causing it to twist and try to run sideways under pressure. This usually results in the belt overheating and/or coming off the pulleys. Reinstalling a belt that behaves this way is a waste of time because it will just come off again. If the belt is more than 3 to 5 years old go ahead and replace it with a new one. The second question is: If the belt is fairly new or only a few years old why did it come off? A likely possibility is that the belt tensioner is worn out and not able to keep the recommended pressure on the belt and/or is twisting out of line with the other pulleys. Either way the tensioner should be replaced with a new one. The third possibility is that one of the components that the belt drives has become misaligned or has a bearing problem cause misalignment and/or overheating of the belt pulley attached to it. Check all components for bearing wear. The pulleys on them should turn smoothy with out sideways play or any roughness. If this is a power steering belt have the suspension and steering component inspected for worn out components causing excessive resistance causing the power steering pump to become overloaded and prematurely wearing out the belt. Just one example is then the vehicle makes popping noised when actually turning the steering wheel usually heard at low speeds but the noise stops when you hold the wheel still even while continuing to drive the vehicle around in a circle. This is often from a failed strut bearing located at the top of a suspension strut or possible from a, or several, under lubricated or failing ball joints.

Jan 04, 2015 | Cars & Trucks

1 Answer

Renault scenic Auxiliary belt tensioner making high pitched noise


Time to replace the pulley, you can test it by pulling off the belt and spinning the pully with your hand or some compressed air, if it makes noise then its time to replace.

Nov 05, 2012 | Cars & Trucks

2 Answers

What makes a belt squeak?


Belts squeak for the same reason tires do when they spin. They are slipping. Something isn't turning as fast as the belt wants it to. On ford it's usually ether the idler sprocket or the tensioner. If you remove the belt and try spinning all of the pulleys by hand.( note the crank wont spin freely) you will usually be able to tell witch ones slipping.

May 14, 2011 | 1999 Ford Taurus

2 Answers

ford fiesta 02 reg,turning the engine on a noise starts like a clunking ,looked under bonet and theres a rip in a belt on the left and side any suggestions.


It will be necessary to replace the belt before it breaks and leaves you stranded. Good Luck! I hope you find this to be very helpful!

Jan 07, 2010 | Ford Freestyle Cars & Trucks

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