Toothed Belt Tension Roller, Remove and Install (17 DR and X 17 DTL)
Remove, Disconnect
Remove toothed belt - see operation "Toothed Belt, Remove and Install (17 DR and X 17 DTL)".
Remove toothed belt tension roller (1) from oil pump.
Install, Connect
Install toothed belt tension roller - ensure that detent lever (3) engages in guide webs (2) and (4) on oil pump.
Attach toothed belt tension roller to oil pump - tightening torque - 25 Nm/15 lbf. ft.
Install toothed belt - see operation "Toothed Belt, Remove and Install (17 DR and X 17 DTL)".
Remove, Disconnect 
Install, Connect 