A/C COMPRESSOR, REMOVING AND INSTALLING ON BRACKET, MECHANICALLY-DRIVEN A/C COMPRESSOR, Vehicles with 4-Cylinder Engine: Installing
Installation is done is reverse order, observe the following:
-- Before tightening the A/C compressor, check seating of both alignment bushings -A- in bracket or A/C compressor -B-.
The alignment sleeves -A- have different styles (different lengths), make sure to use the correct style.
Ensure bushings -A- are properly seated and contact surfaces are clean. Bushings installed incorrectly and dirty or damaged contact surfaces -C- on the bracket or A/C compressor can lead to alignment irregularities between the A/C compressor and engine. Alignment irregularities over operating time lead to damage to the ribbed belt or A/C compressor.
-- Install bolts -A-, -B- or -C-.
Depending on the engine and when the vehicle was manufactured, the different bolts have different tightening specifications.
- To ensure the correct allocation.
- Aluminum bolts (item -A-) only to be used once, replace.
- Tightening specification for aluminum bolts (item -A-) 8 Nm +180°
- Tightening specification for steel bolts (here -B- and -C-) 25 Nm
-- Tighten the bolts -arrow-.
-- Connect the connector -1- to the A/C Compressor Regulator Valve -N280-.
-- Mount the ribbed belt onto the ribbed belt pulley. Refer to INSTALLING for CALB, INSTALLING for CPNB, INSTALLING for CTUC, CTUB and CTUD, or INSTALLING for CAEB, CPMA, CPMB and CHJA .
After fastening the A/C compressor, check installation position of refrigerant lines, lines must be engaged in bracket (if installed, depending on engine).
Check refrigerant lines and their bracket to ensure there is enough distance to the other components. Ensure there is also enough distance between belts, bracket and pulley.
-- Check the DTC memory for the Climatronic Control Module -J255- display and control head and erase any displayed malfunctions, if necessary using the Vehicle Diagnostic Tester in the "Guided Fault Finding " function.