Water Temperature Switch Renewal; Heater Matrix Renewal - Aston Martin DB7 Workshop Manual

Air Conditioning Repair Procedures
Water Temperature Switch/Heater Matrix Renew
•=2?
8.2.12.1 Water Temperature Switch
Renewal
1. Disconnect the battery earth lead.
2. Un-clip and remove the left hand underscuttle
casing.
Figure.
3. Note and disconnect the feed wires from the switch
(Fig. 1-1).
4. Displace and remove the switch from the water
pipe.
5. Fitting a new switch is the reversal of the removal
procedure.
8.2.13.1 Heater Matrix Renewal
1. Disconnect the battery earth lead.
2. Remove the left hand underscuttle panel.
3. (On right hand cars) Remove the glove box
assembly.
3. (On left hand cars) Remove the instrument pack
and surround trim, steering column and mounting
bracket.
4. Drain the coolant into a suitable container.
5. Remove the matrix cover panel securing screws.
6. Removethe rear panel, displacethefront panel and
foam seal for access.
7. Place rag in position.
8. Remove screws securing the feed pipe and
disconnect the pipe from the matrix.
9. Remove and discard the gasket.
10. Remove the screws securing the feed pipe and
disconnect the pipe from the matrix.
11. Remove and discard the gasket.
12. Disconnectthewatertemperatureswitchfeedwires.
13. Remove the foam pad from the pipes.
14. Remove the front panel from the unit.
15. Undo the heater hose matrix pipe hose clips and
disconnect the hoses from the pipes.
16. Reposition the pipes from the matrix.
1 7. Remove the matrix from the air conditioning unit.
18. Fitting a new matrix is the reversal of the removal
procedure.
19. Ensure that new gaskets are fitted.
8-62
May 1996