(4)
 Lock-Stay Actuator

 During the MLG extension, the two lock-stay actuator ports are open to return. The fluid from Port A passes through a restrictor, which controls the rate of MLG extension. When the main landing gear extends, the two lock springs push the side stay and the lock stay to make them straight. The lock springs also pull the lock stay to an overcenter position. When the main door starts to close, the full area side of the lock stay actuator is pressurized (Port B). This makes sure that the lock stay is in the overcenter position.
 During the MLG retraction, the hydraulic fluid from port A goes through a restrictor and onto the actuator annular-end. The piston rod retracts, and breaks the overcenter lock, to fold the side-stay and the lock stay against the lock springs tension.
 The lock stay actuator pulls against the lock spring forces at a very low pressure. This makes sure that the lock stay starts to fold before the high pressure is transmitted to the retraction actuator. A pressure relief-valve is in the valve-housing to keep the pressure level in the lock-stay actuator. to a specified limit. If a high pressure does occur, the pressure relief-valve opens to let the fluid go through Port A, to return.
 The manufacturer sets the lock-stay actuator to a specified length. No adjustment is necessary when it is on the landing-gear leg.
 You can install a split sleeve on the piston rod of the lock-stay actuator to give a strong ground lock.
 1EFF : ALL 1 32-11-00Page 40 1 1 May 01/05R 1 1 1CES 1

 F. Dressings
 **ON A/C 001-003, 051-052,
 (Ref. Fig. 003)

R **ON A/C 004-049, 053-099, 101-149, 151-199, 201-299, 301-399, 401-499,
 (Ref. Fig. 003A)
 **ON A/C ALL
 (Ref. Fig. 005)
 The MLG dressings are the hydraulic lines and the electrical wiring (and the parts that attach, hold and prevent damage to them). The routing of the dressings gives maximum separation for the systems and protection from possible damage.
 The dressings are flexible conduits or rigid conduits and pipes. The parts that do not need to move are rigid and the parts that are at joints (such as the wing/gear interface, across the torque and slave links, and the wheel brakes) are flexible.
 (1) Hydraulic Dressings
 The hydraulic dressings on the MLG complete the hydraulic circuits
 for:
 -
the MLG retraction actuator

 -
the lock-stay actuator

 -
the normal and alternate braking systems.

 The MLG retraction actuator has a pressure and return line that goes from the wing gear interface. The normal and the alternate brakes each have a supply and a return circuit from the wing/gear interface to their related manifolds. The normal brake manifold supplies the hydraulic pressure to one of the two connections at each wheel brake. The alternate brake manifold supplies the other. The supply/return for the lock-stay actuator interfaces next to the side-stay lug attachment.
 1EFF : ALL 1 32-11-00Page 41 1 1 Aug 01/05 1 1 1CES 1 (2) Electrical Dressings

 The electrical dressings on the MLG complete the electrical circuits to these systems/components:
 -
the normal braking system (Ref. 32-42-00)

 -
the alternate braking systems (Ref. 32-43-00), (Ref. 32-44-00) and (Ref. 32-45-00)

 -
the brake temperature-monitoring system (Ref. 32-47-00)

R **ON A/C 051-099, 301-399, 401-499,
 -the brake cooling system (Ref. 32-48-00)
 **ON A/C 051-099,
 -the TPIS (tire pressure indicating system)
 **ON A/C ALL
 -the proximity switches (Ref. 32-31-00).
 **ON A/C 001-049, 101-149, 151-199, 201-299,
 (3) Electrical Harnesses
 The 1M and 2M electrical harnesses have cables which supply the electrical connection to the:
 -braking and anti-skid systems (Ref. 32-42-00), (Ref. 32-43-00), (Ref. 32-44-00) and (Ref. 32-47-00)
 -position and warning systems (Ref. 32-60-00) and (Ref. 32-62-00)
 -indicating and warning systems (Ref. 32-61-00).
 **ON A/C 051-099,
 (3) Electrical Harnesses
 The 1M and 2M electrical harnesses have cables which supply the electrical connection to the:
 -braking and anti-skid systems (Ref. 32-42-00), (Ref. 32-43-00), (Ref. 32-44-00) and (Ref. 32-47-00)
 -brake cooling system (Ref. 32-48-00)
 -tire pressure indicating system (Ref. 32-49-00)
 1EFF : ALL 1 32-11-00Page 42 1 1 Aug 01/05 1 1 1CES 1

 -position and warning systems (Ref. 32-60-00) and (Ref. 32-62-00)
 -indicating and warning systems (Ref. 32-61-00).

R **ON A/C 301-399, 401-499,
 (3) Electrical Harnesses
　
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