Put the mask on and breathe through it to make sure that the oxygen supply is correct.

Compare the two indications.

Find the source of the fuel leakage.

Principal dimensions shall be shown upon the drawing.

Only apply very light pressure to the surface.

Release the SHORT-CIRCUIT TEST switch.

To extinguish a possible fire, portable fire extinguishers are installed in these areas.

Open the left (right) access panel L42 (R42).

Tighten the bolts in the sequence that is given in figure 3.

Disassemble this unit into two parts.

Increase the pressure slowly (not more than one turn each minute)