SINGLE AISLE TECHNICAL TRAINING MANUAL MAINTENANCE COURSE M35 LINE MECHANICS (V2500A5.ME)

SINGLE AISLE TECHNICAL TRAINING MANUAL MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME) LANDING GEAR This document must be used for training purposes only Under no circumstances should this document be used as a reference It will not be updated. All rights reserved No part of this manual may be reproduced in any form, by photostat, microfilm, retrieval system, or any other means, without the prior written permission of AIRBUS S.A.S. LANDING GEAR GENERAL Landing Gear Level 2 (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 LANDING GEAR AND DOORS Landing Gear Safety Precautions (2) . . . . . . . . . . . . . . . . . . . . . . . . . 24 Landing Gear Doors Ground Operation (2) . . . . . . . . . . . . . . . . . . . . 30 Landing Gear Doors Ground Opening D/O (3) . . . . . . . . . . . . . . . . . 34 LGCIU Control Signals (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Main Landing Gear Description (2) . . . . . . . . . . . . . . . . . . . . . . . . . . 44 Main Landing Gear Doors Description (2) . . . . . . . . . . . . . . . . . . . . 56 Nose Landing Gear Description (2) . . . . . . . . . . . . . . . . . . . . . . . . . . 58 Nose Landing Gear Doors Description (2) . . . . . . . . . . . . . . . . . . . . . 66 WHEELS AND BRAKES (Classic) Brake System Description (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 WHEELS AND BRAKES (Enhanced) Brake System Description (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 NOSE WHEEL STEERING (Classic) System Description/Operation (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 NOSE WHEEL STEERING (Enhanced) System Description/Operation (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 MAINTENANCE PRACTICE Wheel and Brake Removal & Installation (2) . . . . . . . . . . . . . . . . . . 82 MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME) 32 - LANDING GEAR TABLE OF CONTENTS May 11, 2006 Page 1 SINGLE AISLE TECHNICAL TRAINING MANUAL U3U06191 - U0O35M0 LANDING GEAR LEVEL 2 (2) SYSTEM OVERVIEW EXTENSION/RETRACTION SYSTEM Landing Gear Control and Interface Units (LGCIU) 1 and 2 electrically control gear and door sequencing. Each LGCIU in turn controls a complete gear cycle: one UP selection and one DOWN selection. The LGCIU in control is the active unit and the other is the standby unit. The active unit change after each retract/extend cycle (when the L/G control lever is moved away from the DOWN position). If a failure occurs in the active LGCIU, the standby LGCIU becomes active. Duplicated sensors monitor the gear up and down positions and the door closed and open positions. An interlock mechanism prevents unsafe retraction by locking the lever in the DOWN position when any shock absorber is not extended. The two systems are electrically segregated with different connections on the related selector valves. In case of failure, the gear can be mechanically extended from the cockpit by means of a gravity extension crank handle. During free fall extension, the L/G doors stay open and the L/G is locked down by the lock springs. The normal extension and retraction control is available when the free-fall handle-assembly is put back to its initial position. MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME) 32 - LANDING GEAR LANDING GEAR LEVEL 2 (2) May 10, 2006 Page 2 SINGLE AISLE TECHNICAL TRAINING MANUAL U3U06191 - U0O35M0 - UM32BA000000001 SYSTEM OVERVIEW - EXTENSION/RETRACTION SYSTEM MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME) 32 - LANDING GEAR LANDING GEAR LEVEL 2 (2) May 10, 2006 Page 3 SINGLE AISLE TECHNICAL TRAINING MANUAL U3U06191 - U0O35M0 - UM32BA000000001 LANDING GEAR LEVEL 2 (2) SYSTEM OVERVIEW (continued) NORMAL BRAKING (ENHANCED) Normal braking is obtained when: - The green hydraulic pressure is available, - The Anti/SKID and Nose/Wheel Steering control switch is in the ON position, - The Parking Brake control switch is in the OFF position. Electrical control is obtained: - Through the pedals, - Automatically on the ground by the auto brake system, - In flight when the gear control lever is set to UP (in flight braking). ALTERNATE BRAKING (ENHANCED) The alternate brake system is powered by the yellow hydraulic system and backed up by a brake accumulator. The Alternate Braking Control Unit (ABCU) via the Braking/Steering Control Unit (BSCU) electrically controls the alternate braking with A/SKID. The ABCU becomes active when the normal brake system is faulty and/or low hydraulic pressure is detected in the green system. The information comes from the BSCU. Braking inputs are given by the brake pedals and transmitted through the Alternate Brake Pedal Transmitter Unit to the ABCU, which will control the braking pressure. The braking data are sent to the BSCU for A/SKID protection. The braking pressure is read on the triple indicator. The A/SKID regulation is disconnected, either electrically by setting to the OFF position the A/SKID & N/W Steering switch, BSCU failure or hydraulic low pressure (brakes being supplied by the brake accumulator only). The pilot must refer to the triple pressure indicator to limit brake pressure in order to avoid locking a wheel. With the accumulator pressure only, a maximum of 7 full brake pedal applications can be done. PARKING BRAKE (ENHANCED) The yellow hydraulic system or the brake accumulators supply brake pressure via the shuttle valves. Putting ON the parking brake, deactivates the other braking modes and the A/SKID system. The Alternate Direct Drive Valve (DDV) opens to allow the application off full pressure. MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME) 32 - LANDING GEAR LANDING GEAR LEVEL 2 (2) May 10, 2006 Page 4 SINGLE AISLE TECHNICAL TRAINING MANUAL U3U06191 - U0O35M0 - UM32BA000000001 SYSTEM OVERVIEW - NORMAL BRAKING (ENHANCED) PARKING BRAKE (ENHANCED) MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME) 32 - LANDING GEAR LANDING GEAR LEVEL 2 (2) May 10, 2006 Page 5 SINGLE AISLE TECHNICAL TRAINING MANUAL U3U06191 - U0O35M0 - UM32BA000000001 LANDING GEAR LEVEL 2 (2) SYSTEM OVERVIEW (continued) BRAKING (CLASSIC) In the classic system, the selection from normal to alternate braking is made by the automatic selector. This gives the priority to the Green Hydraulic System when both Green and Yellow are pressurized. The servo valve is fully opened when there is no braking order. In the classic system, the alternate braking is controlled by the auxiliary low-pressure system linked to the brake pedals and the dual valve modulates the brake pressure. The Alternate Servo valves directly controlled by the BSCU achieve the antiskid function. MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME) 32 - LANDING GEAR LANDING GEAR LEVEL 2 (2) May 10, 2006 Page 6 SINGLE AISLE TECHNICAL TRAINING MANUAL U3U06191 - U0O35M0 - UM32BA000000001 [...]... systems MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  32 - LANDING GEAR LANDING GEAR LEVEL 2 (2) May 10, 2006 Page 20 U3U06191 - U0O35M0 - UM32BA000000001 SINGLE AISLE TECHNICAL TRAINING MANUAL MAINTENANCE TIPS - SAFETY PRECAUTIONS MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  32 - LANDING GEAR LANDING GEAR LEVEL 2 (2) May 10, 2006 Page 21 SINGLE AISLE TECHNICAL TRAINING MANUAL LANDING... ECAM WHEEL page MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  32 - LANDING GEAR LANDING GEAR LEVEL 2 (2) May 10, 2006 Page 10 U3U06191 - U0O35M0 - UM32BA000000001 SINGLE AISLE TECHNICAL TRAINING MANUAL SYSTEM OVERVIEW - BTMU TPIS MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  32 - LANDING GEAR LANDING GEAR LEVEL 2 (2) May 10, 2006 Page 11 SINGLE AISLE TECHNICAL TRAINING MANUAL LANDING... correctly MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  32 - LANDING GEAR LANDING GEAR LEVEL 2 (2) May 10, 2006 Page 12 U3U06191 - U0O35M0 - UM32BA000000001 SINGLE AISLE TECHNICAL TRAINING MANUAL SERVICING - MLG SHOCK ABSORBER ACCUMULATOR MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  32 - LANDING GEAR LANDING GEAR LEVEL 2 (2) May 10, 2006 Page 13 SINGLE AISLE TECHNICAL TRAINING MANUAL. .. (MRW) and tire sizes MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  32 - LANDING GEAR LANDING GEAR LEVEL 2 (2) May 10, 2006 Page 14 U3U06191 - U0O35M0 - UM32BA000000001 SINGLE AISLE TECHNICAL TRAINING MANUAL DAILY CHECK MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  32 - LANDING GEAR LANDING GEAR LEVEL 2 (2) May 10, 2006 Page 15 SINGLE AISLE TECHNICAL TRAINING MANUAL LANDING GEAR LEVEL... injury MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  32 - LANDING GEAR LANDING GEAR LEVEL 2 (2) May 10, 2006 Page 18 U3U06191 - U0O35M0 - UM32BA000000001 SINGLE AISLE TECHNICAL TRAINING MANUAL MAINTENANCE TIPS - HYDRAULIC FUSES NOSE WHEEL STEERING MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  32 - LANDING GEAR LANDING GEAR LEVEL 2 (2) May 10, 2006 Page 19 SINGLE AISLE TECHNICAL TRAINING. .. 75 degrees MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  32 - LANDING GEAR LANDING GEAR LEVEL 2 (2) May 10, 2006 Page 8 U3U06191 - U0O35M0 - UM32BA000000001 SINGLE AISLE TECHNICAL TRAINING MANUAL SYSTEM OVERVIEW - NOSE WHEEL STEERING MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  32 - LANDING GEAR LANDING GEAR LEVEL 2 (2) May 10, 2006 Page 9 SINGLE AISLE TECHNICAL TRAINING MANUAL LANDING... stated in the AMM Tasks MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  32 - LANDING GEAR LANDING GEAR LEVEL 2 (2) May 10, 2006 Page 22 U3U06191 - U0O35M0 - UM32BA000000001 SINGLE AISLE TECHNICAL TRAINING MANUAL A CHECK ITEMS MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  32 - LANDING GEAR LANDING GEAR LEVEL 2 (2) May 10, 2006 Page 23 SINGLE AISLE TECHNICAL TRAINING MANUAL LANDING GEAR SAFETY... detectors MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  32 - LANDING GEAR LANDING GEAR SAFETY PRECAUTIONS (2) May 10, 2006 Page 24 U3U06191 - U0O35M0 - UM32D3000000001 SINGLE AISLE TECHNICAL TRAINING MANUAL L/G CONTROL LEVER MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  32 - LANDING GEAR LANDING GEAR SAFETY PRECAUTIONS (2) May 10, 2006 Page 25 SINGLE AISLE TECHNICAL TRAINING MANUAL LANDING... coupling MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  32 - LANDING GEAR LANDING GEAR LEVEL 2 (2) May 10, 2006 Page 16 U3U06191 - U0O35M0 - UM32BA000000001 SINGLE AISLE TECHNICAL TRAINING MANUAL MEL/DEACTIVATION - PROXIMITY SENSORS MAIN WHEEL BRAKES MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  32 - LANDING GEAR LANDING GEAR LEVEL 2 (2) May 10, 2006 Page 17 SINGLE AISLE TECHNICAL TRAINING. .. doors MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  32 - LANDING GEAR LANDING GEAR SAFETY PRECAUTIONS (2) May 10, 2006 Page 26 U3U06191 - U0O35M0 - UM32D3000000001 SINGLE AISLE TECHNICAL TRAINING MANUAL HYDRAULICS - MLG AND MLG DOOR SAFETY DEVICES MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ME)  32 - LANDING GEAR LANDING GEAR SAFETY PRECAUTIONS (2) May 10, 2006 Page 27 SINGLE AISLE TECHNICAL . pressure. MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ ME) 32 - LANDING GEAR LANDING GEAR LEVEL 2 (2) May 10, 2006 Page 4 SINGLE AISLE TECHNICAL TRAINING MANUAL U3U06191 - U0O35M0 - UM32BA000000001 SYSTEM. OVERVIEW - BRAKING (CLASSIC) MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ ME) 32 - LANDING GEAR LANDING GEAR LEVEL 2 (2) May 10, 2006 Page 7 SINGLE AISLE TECHNICAL TRAINING MANUAL U3U06191 - U0O35M0. 2006 Page 14 SINGLE AISLE TECHNICAL TRAINING MANUAL U3U06191 - U0O35M0 - UM32BA000000001 DAILY CHECK MAINTENANCE COURSE - M35 LINE MECHANICS (V2500-A5/ ME) 32 - LANDING GEAR LANDING GEAR LEVEL