Gates says a specific issue with maintenance of the Synchronous Belt Drive (timing belt) Systems of the 1.4HDi diesel engines as fitted to the Citroën C1, Peugeot 107 and Toyota Aygo demonstrate the value of using the timing belt tool kit that’s been specifically designed for the engine.
The three 1.4 HDi diesels are common rail applications, are similar in build, with similar timing belt drives. The same Gates KP15587XS timing belt kits can be installed on each model.
However, the drive system in the C1 and the 107 bear a slight – but significant – difference to that found in the Toyota Aygo. The C1 and the 107 require a different timing belt tool kit (GAT 4820) than the Toyota Aygo (GAT4735A).
Gates says Extra care and attention must also be taken when following the manufacturer’s recommended installation procedure.
When the timing belt kit is installed on both the C1 and 107, the high-pressure pump must be pinned, using the locking pins supplied with the appropriate tool kit. If not, there are significant consequences as a result of the vibrations that can be generated subsequently, in use.
These vibrations will always lead to premature timing belt failure.
The Toyota Aygo has an alternative set-up, requires a different kit and the pump need not be pinned.
Gates always recommends that the correct tool kits are sourced in advance and warns against any deviation from the manufacturer’s recommended fitting procedure.