Inside Line: Dayco


The belt replacement on the 1.4-litre HDi diesel engine fitted to the Peugeot 207 can sometimes be problematic, so Dayco has issued a technical bulletin to guide technicians through the process and ensure that these problems are not encountered. In addition, as the timing drive system on this unit also drives the water pump, Dayco recommend that the water pump is automatically changed when a new timing belt is fitted and vice versa.

Once the engine has been cleaned and made ready for the installation of the new belt, make sure that the driving shaft aligning tool and the camshaft tool are properly fitted and that the fuel pump pinion is properly aligned.

Position the new tensioner correctly using the plate and locating pin on its base and tighten the bearing fastening bolt. Now fit the timing belt in the following order: driving shaft pinion, idler, camshaft pinion, water pump pinion, fuel pump pinion and finally, the tensioner.

Slacken off the tensioner fastening bolt and remove the locking pin.

Using an Allen key, rotate the tensioner pulley anticlockwise until the indicator is positioned in the centre and retighten the tensioner fastening bolt to a torque of 30Nm. Then remove the camshaft locking and driving shaft aligning tools.

Make sure the fuel pump pinion is properly aligned and then rotate the crankshaft 10 turns clockwise and make sure the indicator is still correctly aligned. Now check that the fitting tools can easily be re-inserted, if not repeat the installation procedure.

Reassemble the remaining components and insert the tool to secure the flywheel and tighten the driving shaft pulley bolt to a torque of 30Nm + 180º.

High Tenacity (HT) Belts

The Dayco High Tenacity (HT) or ‘white’ timing belt has become the OE solution for many of the world’s vehicle manufacturers and the 1.6-litre HDi diesel engine used for some versions of the Peugeot 207 is no exception. Depending on which version of the 1.6 HDi engine is fitted, Dayco timing belt kits KTB493 or KTB959 is the appropriate reference with KTBWP4930 or KTBWP9590 the same kit but inclusive of an OE quality water pump.

Distinguished by being white on its toothed side, the HT belt is a unique product, which is why only Dayco that can provide the aftermarket with a truly matching OE product. In addition to the obvious benefit that this gives the independent sector, the kit also provides them with the potential to improve upon the standard warranty that would normally be offered by the franchised dealer undertaking a timing belt replacement.


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