BMW 318/325/M3/525/535/M5 1989-1993 Repair Information

Compressor

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REMOVAL & INSTALLATION



E30 3 Series
  1. Have the air conditioning system discharged and the refrigerant recovered by a properly equipped shop.
  2.  
  3. Remove the air cleaner assembly. Disconnect the electrical leads from the compressor. Loosen and remove the belt.
  4.  
  5. Disconnect the refrigerant lines from the body of the compressor and plug the opening immediately.
  6.  
  7. Remove the compressor mounting bolts and remove the compressor. On the M42 engine, use tool 64 5 070 or equivalent to pull out the pivot sleeve. This tool acts as a spacer allowing the use of the mounting bolt to pull the sleeve out of the bracket.
  8.  

To install:
  1. Install the compressor and torque the mounting bolts. Tighten all M8 bolts to 16-17 ft. lbs. (23-24 Nm) and all M10 bolts to 31-35 ft. lbs. (47-48 Nm).
  2.  
  3. Connect the refrigerant lines. Tighten the 5 / 8 in. line to 14.5 ft. lbs. (20 Nm), the 3 / 4 in. line to 28 ft. lbs. (39 Nm), the 7 / 8 lines to 30 ft. lbs. (42 Nm) and the 11 / 16 in. lines to 35 ft. lbs. (48 Nm).
  4.  
  5. Connect the electrical wiring and install the belt. Tighten the belt. Install the air cleaner assembly.
  6.  
  7. Have the system charged and the proper amount of oil added.
  8.  

E36 3 Series
  1. Have the air conditioning system discharged and the refrigerant recovered by a properly equipped shop.
  2.  
  3. Disconnect the electrical leads from the compressor. Loosen and remove the belt.
  4.  
  5. Disconnect the refrigerant lines from the body of the compressor and plug the openings immediately.
  6.  
  7. Remove the compressor mounting bolts and remove the compressor. On the M42 engine, use tool 64 5 070 or equivalent to pull out the pivot sleeve. This tool acts as a spacer allowing the use of the mounting bolt to pull the sleeve out of the bracket.
  8.  

To install:
  1. Install the compressor and torque the mounting bolts. Tighten all M8 bolts to 17 ft. lbs. (24 Nm) and all M10 bolts to 35 ft. lbs. (48 Nm).
  2.  
  3. Connect the refrigerant lines. Tighten the 5 / 8 in. line to 14.5 ft. lbs. (20 Nm), the 3 / 4 in. line to 28 ft. lbs. (39 Nm), the 7 / 8 lines to 30 ft. lbs. (42 Nm) and the 11 / 16 in. lines to 35 ft. lbs. (48 Nm).
  4.  
  5. Connect the electrical wiring and install the belt. Tension the belt.
  6.  
  7. Have the system charged and the proper amount of oil added.
  8.  

E34 5 Series
  1. Have the air conditioning system discharged and the refrigerant recovered by a properly equipped shop.
  2.  
  3. Disconnect the electrical leads from the compressor. Loosen and remove the belt.
  4.  
  5. Disconnect the refrigerant lines from the body of the compressor and plug the openings immediately.
  6.  
  7. Remove the compressor mounting bolts and remove the compressor. On the M42 engine, use tool 64 5 070 or equivalent to pull out the pivot sleeve. This tool acts as a spacer allowing the use of the mounting bolt to pull the sleeve out of the bracket.
  8.  

To install:
  1. Install the compressor and torque the mounting bolts. Tighten all M8 bolts to 17 ft. lbs. (24 Nm) and all M10 bolts to 35 ft. lbs. (48 Nm).
  2.  
  3. Connect the refrigerant lines. Tighten the 5 / 8 in. line to 14.5 ft. lbs. (20 Nm), the 3 / 4 in. line to 28 ft. lbs. (39 Nm), the 7 / 8 lines to 30 ft. lbs. (42 Nm) and the 11 / 16 in. lines to 35 ft. lbs. (48 Nm).
  4.  
  5. Connect the electrical wiring and install the belt. Tension the belt.
  6.  
  7. Have the system charged and the proper amount of oil added.
  8.  

 
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