R MLG Interface
R Figure 004A
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1 1 May 01/05
1 1
1CES 1
MLG Interface Figure 004B
R 1EFF : 1 1 1CES 301-399, 401-499, 1 111 32-11-00 Page 12 Aug 01/05
**ON A/C ALL
6. Component Description
_____________________
The MLG leg has a main fitting and a sliding tube, which together make the shock absorber. The torque-links align the main fitting and sliding tube, but lets vertical movement between the parts occur. A torque link damper decreases the landing vibrations through the torque links.
A MLG retraction actuating cylinder extends and retracts the MLG (Ref. 32-31-00).
A. Main Fitting
**ON A/C 001-003, 051-052,
(Ref. Fig. 001) R **ON A/C 004-049, 053-099, 101-149, 151-199, 201-299, 301-399, 401-499,
(Ref. Fig. 001A)
**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)
**ON A/C 051-052,
(Ref. Fig. 006)
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MLG Mountings Figure 005
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R MLG Forward Bearing
R Figure 006
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1 1 May 01/05
1 1
1CES 1
R **ON A/C ALL
R Post SB 57-1104 For A/C 051-052,
R (Ref. Fig. 006A)
R **ON A/C ALL
R (Ref. Fig. 007)
The main fitting is made of die-forged ultra-high-tensile steel, and includes: - the main barrel - the drag stay - the cross tube - the aircraft interface attachment-lugs.
To prevent possible stress points, the main fitting does not have screw-threads or screw-thread inserts.
The external lugs and brackets on the main fitting hold these parts: - the MLG retraction-actuating-cylinder - the lock stay - the brake manifold - the fixed fairing - the uplock pin - the side-stay assembly - the upper torque-link - the spare-seal activating-valve - the upper slave-link - a beam (to install or remove the MLG during maintenance).
The barrel of the main fitting is a cylinder, closed at the top, which makes the outer part of the shock absorber. The main fitting contains a diaphragm and tube assembly, which makes the top of the shock absorber. A pin connects the diaphragm and the tube assembly. This pin is in the two lateral holes in the main fitting, and contains the shock-absorber charging-valve.
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R MLG Forward Bearing Figure 006A
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MLG Rear Bearing Figure 007
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**ON A/C 001-003, 051-052,
A hollow cross-tube at the top of the main fitting has two attachment-fittings that connect the MLG to the airframe. The aft attachment-fitting has a machined lug that holds the rear spherical bearing. The forward attachment-fitting has a cylindrical lug that connects to the forward spherical bearing. A pintle pin connects the aft attachment-fitting of the MLG gear to rib 5. The pintle pin has greasers to lubricate the attachment fitting with grease. A seal assembly and locking ring, on the forward attachment fitting has greasers to lubricate the spherical bearing.
A drag stay between the main fitting and the forward end of the hollow tube holds the MLG retraction actuator. A lug bolted on the drag stay, connects the lock stay.
The forward and the aft fitting assemblies transmit vertical loads (and small drag loads caused by friction) to the airframe.
R **ON A/C 004-049, 053-099, 101-149, 151-199, 201-299, 301-399, 401-499,
A hollow cross-tube at the top of the main fitting has two attachment-fittings that connect the MLG to the airframe. The aft attachment-fitting has a machined lug that holds the rear spherical bearing. The forward attachment-fitting has a cylindrical lug that connects to the forward spherical bearing. A pintle pin connects the aft attachment-fitting of the MLG gear to rib 5. The pintle pin has greasers to lubricate the attachment fitting with grease. A seal assembly and locking ring, on the forward attachment fitting has greasers to lubricate the spherical bearing.
A drag stay between the main fitting and the forward end of the hollow tube holds the MLG retraction actuator. A machined lug on the drag stay connects the lock stay.
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