6.7.1 Refrigerant pump disassembly

1. Perform the operations described in Par 6.5.1.
   
   

6.7.2 Crankshaft and target wheel pulley disassembly

1. Perform the operations described in Par 6.6.1.
2. Disconnect the connector AE from the sensor S.

6.7.3 Timing system crankcase disassembly

  Important

• Perform the operations described in Par. 5.2.
  

1. Make sure that the reference pin A is facing upwards.
2. Undo the screw H (ST_06) and remove the sensor S.
3. Undo the screws B and remove the timing system crankcase C.

6.7.4 Oil pump disassembly

1. Undo the screws D (ST_06) and remove the group pump E from the timing system crankcase C.
2. Remove the rotors F and G from the oil pump crankcase E.

Fig 6.51

Fig 6.52

6.7.5 Oil pump assembly

NOTE: Carry out the checks described in Par. 8.7 prior to assembly.

1. Check that all surfaces in contact between F, G, H, E and C are free from impurities - scratches - dents.
2. When assembling, do not use any type of gasket between E and C.
3. Thoroughly lubricate the seat of the rotors H on the oil pump crankcase E and the two rotors F and G.
4. Within housing H insert the 2 rotors (in sequence) G and F, observing the references BP as described in figure (or refer to Par. 2.10.2).
5. Check that the 2 pins L are inserted properly in the timing system crankcase C.
6. Position the oil pump carter E using the reference pins L.
7. Clamp the oil pump carter E with the screws D (tightening torque 10 Nm - (ST_06)).

6.7.6 Timing system crankcase assembly

  Important

• Always replace the oil seal J after each assembly.
• Always replace the gasket P after each assembly.
  
  
• To prepare the surface of the K plane for the new application of the sealant, it must be cleaned through the use of:
  - initially Loctite SF 7200
  - subsequently Loctite SF 7063
  Avoid any contact with the K plane and be careful not to compromise the cleaning performed.
  
  

1. Lubricate the lip of the oil seal J.
2. Apply a coating of Loctite 5188 around 1mm thick on the surfaces K of the crankcase C.
3. Make sure that the key M (Fig. 6.56) is inserted properly on the crankshaft and that it is facing upwards.
4. Check that the 2 pins N are inserted properly in the timing system crankcase C.

5. Lubricate and insert the gasket P in the seat of the oil pump Q.
6. Tighten the tool ST_10 on the crankshaft.
7. Position the crankcase C on the base, using the reference pins N, inserting the oil pump Q on the crankshaft.

8. Fit the timing system crankcase C with the screws R observing the indicated clamping sequence (tightening torque at 25 Nm).

9. Assemble sensor S by means of capscrew T on carter C inserting gasket U (tightening torque at 10 Nm ST_06).

6.7.7 Crankshaft and target wheel pulley assembly

1. Leave the tool ST_34 mounted (Fig. 6.44).
2. Check that the pin A is mounted properly on the crankshaft Z.
3. Position the pulley unit W on the crankshaft Z respecting the reference with the pin A.
4. Apply Molyslip grease on the screw thread Y.
5. Clamp the pulley unit W with the screw Y (tightening torque at 360 Nm).
6. Remove the special tool ST_34 (Fig. 6.44).

7. Mount the bracket Z with the screws AA (tightening torque at 10 Nm).
8. Perform the operations described in Par. 9.12.
9. Insert the shim AB on the sensor AC.
10. Clamp the sensor AC on the bracket Z with the screw AD (tightening torque at 10 Nm).

6.7.8 Coolant pump assembly

11. Perform the operations described in Par 6.5.2.