300TD (123.193) L5-3.0L DSL Turbo (617.952) (1984)
Drive Belt: Service and Repair
Notes Regarding Replacing and Tensioning V-Belts
Checking condition of V-belts
Cracked, porous, burnt or worn V-belts should be replaced.
Checking tension
For handling of instrument, See: Testing and Inspection
The respective adjusting data refer to KG scale of measuring instrument (arrow).
Used V-belts
Check tension of V-belts and compare with values named in specifications for used V-belts (e.g. V-belt, profile width 9.5 mm = adjusting value 20-25)
and retension, if required.
Mounting and tensioning of new V-belts
Perfect mounting of a V-belt requires loosening of respective auxiliary unit or of tensioning device of V-belt to the extent that the belt can be easily
mounted. In addition, the running surfaces for the V-belts on pulleys must be free of burr, rust and dirt.
Keep free of oil, grease, chemicals. Do not use belt wax or similar agents. Subsequent optimal adjustment of belt tension (for adjusting values refer to
specifications) serves to prevent complaints such as squeaking V-belts and low life.
In scope of maintenance jobs, mount V-belts prior to engine checkup and tension to value for new V-belts named in specifications (e.g. V-belt, profile
width 9.5 mm = adjusting value 30).
If the V-belt tension is checked during final acceptance or following a test drive, the value measured in such a case should be in agreement with the value
named in specifications for used V-belts (e.g. V-belt with profile width 9.5 mm = adjusting value 20-25). If less, retension V-belt to this value.