Bleeding The Roof Hydraulic System; Left Hand Ram Bleeding; Bleed The Right Hand Ram And Pump - Aston Martin DB7 Workshop Manual

Body and Trim
Bleeding the Roof Hydraulic System
"=2?
9.0.02.5 - Bleeding the Roof Hydraulic
System
Procedure
This procedure is completed in two stages:
a) Bleed the left hand ram by disconnecting it
from the pump.
b) Bleed the right hand ram and pump by
disconnecting both from the left hand ram.
Bleed the left hand ram:
1. Remove the roof hydraulic system.
2. Disconnect the left cylinder union nuts at the
pump.
Bleed the right hand ram and pump:
8. Release the left hand cylinder tubes at the cylinder
and submerge the tubes in hydraulic fluid.
9. TurnthemotorcontrolvalvetotheElectric position.
10. Fully extend the right hand ram to draw in clean
fluid.
11. Invert the right hand cylinder and pause for any
trapped air to rise to the top.
12. Fully retractthe right hand ram to expel any trapped
air.
13. Reconnect the two pipes to the left hand cylinder
and tighten the union nuts.
14. Remove the filler plug and top up the reservoir with
clean fluid to the maximum level indicated on the
reservoir. Refit the filler plug.
15. Refit the roof hydraulic system.
Figure h Left Hand Ram Bleeding
3. Submerge the two tubes in hydraulic fluid.
4. Fully extend the left hand ram to draw in clean
hydraulic fluid.
5. Invert the cylinder, pause for any air in the cy 1 inder
to rise to the top and then fully retract the ram to
expel any remaining air.
6. Reconnect the tubes to the pump and tighten the
union nuts.
7. Remove the reservoir filler plug and fill to the
maximum level indicated on the fluid reservoir.
Refit the filler plug.
7-12 May 1996