Valve Plate Renewal - Aston Martin DB7 Workshop Manual

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Air Conditioning Repair Procedures
Valve Plate Renewal
Figure 2.
12. Position the cylinder head (Fig. 2-1) on the cylinder
block (Fig. 2-2), fit and tighten the securing bolts in
the sequence shown in Fig. 3.
8.1.04.1 Valve Plate Renewal
Data
Torque Figures
Cylinder head bolts 29.83 - 33.9 Nm
Procedure
1. Open the bonnet and fit a wing cover.
2. Depressurise the air conditioning system.
3. Remove the compressor.
4. Position the compressor in a vice, tighten the vice
onto the compressor body lugs.
5. Remove the outlet port blanking plate securing bolt
and detach the plate.
6. Remove the ' O ' ring seals from the compressor
outlet port.
figure 3.
13. Fit new ' O ' ring seals in the compressor outlet port,
position the outlet port blanking plate and fit and
tighten the securing bolt.
14. Check and top up compressor oil
15. Refit the compressor.
16. Recharge the air conditioning system.
Figure 1.
7.
Removethecylinder head securing boltsand detach
the cylinder head (Fig. 1-1) from the cylinder block.
8. Remove valve plate (Fig. 1 -2) from the compressor.
9. Remove all traces of gasket material from the
mati ng surfaces of the cy I i nder head and compressor.
10. Apply clean refrigerant oil to the gaskets and then
position them on the valve plate.
May 1996 8-53