Tensioner timing belt DiTD

Tensioner timing belt turbo diesel engines Mazda 323, 626, Premacy, Mazda6 and MPV

After having replaced the tensioner for the timing belt in cars with turbo diesel engines it happens that already after a few days these cars have engine-trouble with the timing belt and/or timing gear. Research has shown us that the tension of the timing belt is reduced based on disfunction of the tensioner.

New tensioners from stock, after removal of the lock pin and therewith expansion of the pressure spindle, show that this spindle is not “rigid”, meaning that it can be pushed in by hand.

This disfunction can occur while stocking this tensioner in a horizontal position. Oil leakage can occur, damaging this tensioner. Prior to the assembling of this tensioner one has to ascertain the rigidness of this tensioner.

How to handle in the assembly hall:

1. Place the tensioner vertically in a benchvice.
2. If while enforcing a power of 235 N (24 kg) on the spindle this item is rigid, then push in the spindle slowly and secure it with the locking pin. The tensioner then can be assembled in place.
3. If enforcement with the power of 235 N (24 kg) shows that the spindle is not rigid, then push in the spindle slowly two or three times until the end. Ascertain now the rigidness of the tensioner after which assembly can be performed.
4. If rigidness of the spindle cannot be ascertained the tensioner shows disfunction and cannot be assembled. It must be replaced prior to assembly.

The upright position is the correct position: