grand vitara 1.9D , not starting well, could the timing have slipped?

There wer on 2007 Suzuki Grand Vitara

There was some loose pieces of steel, maybe shim, in cambelt cover.Could they have jammed and caused the cam drive pulley to have moved?
Does anyone have any tips on fitting a cam belt to these 1.9ds?
It is a Renault engine.
Thank you

Asked by for the 2007 Suzuki Grand Vitara
Oh yeah , u got problems now ...