A+32+ACS

pdf

School

Aviation Institute of Maintenance, Dallas *

*We aren’t endorsed by this school

Course

AVIATION

Subject

Mechanical Engineering

Date

Apr 3, 2024

Type

pdf

Pages

5

Uploaded by AdmiralPuppy4038

Report
Project A-32 Given: A hydraulic and a pneumatic system with each installed on an aircraft or system trainer, service information, supply of hydraulic fluid and special tools as required. Performance: The student will inspect, check, troubleshoot, service and repair each assigned system as required. Standard: All work will be accomplished with return to service quality, and each system will operate as designed. Name: ____________________ Score: ____________ PROCEDURE: 1. The student will identify, inspect, troubleshoot, and service components to provide an operational hydraulic system. Identify the location and purpose of various components of a given aircraft hydraulic system, using the maintenance manuals of the assigned aircraft. 2. Answer the questions in complete sentences, in your own words. 3. Be prepared to answer random oral questions, based on the information you have researched. You may use project sheets and any manufacturers data to substantiate your answers. 4. Instructor will assign which aircraft to research for this project. Instructor Assigned Aircraft: ________________________________
° Procedure 1: Aircraft: _____________ 1. Identify the location and purpose of the following hydraulic components. Be as specific as required to give a full description of location and purpose. Hydraulic Powerpack (Location) Purpose: Ref: 2. Hydraulic Accumulator (Location) Ref: 3. How do you know if the reservoir is full? Ref: 4. Landing Gear Actuators (Location) L & R Main Gear : Nose Gear : Purpose: Ref: 5. Landing gear hydraulic System Filter (Location). . Purpose: Ref: 6. Emergency hand pump (Location) Purpose: Manually extend the landing gear Ref: Piper PA-23 Aztec Located in the control pedestal below the instrument panel Operates landing gear, flaps, and brake systems PA-23 Service Manual PG 1D15 Located in the control pedestal below the instrument panel PA-23 Service Manual PG 1D15 Add fluid to the system through the filler tube until fluid drips from the overflow PA-23 Service Manual PG 1D14 Para 2-48F Within the fuselage nose section or wing Access panels above engine nacelles in both wings Between steering column in nose wheel well below engine To extend and retract landing gear PA-23 Service Manual PG 2A22 Fig 6-4 Left hand wing engine and nacelle access panel To filter hydraulic fluid and prevent damage to hydraulic components PA-23 Service Manual PG 2A22 Fig 6-4 Attached to powerpak below instrument control panel PA-23 Service Manual Fig 6-19
Procedure 2: Answer the following questions based upon the assigned aircraft. Please provide page and paragraph as a reference source for your answer. 1. What is the warning associated with the operation of the Hydraulic Extension and Retraction system? Ref: 2. Troubleshooting (from trouble shooting table) What could be the first 5 causes of the landing gear failing to retract? What is the remedy or remedies to fix the problems? Ref: 3. After the landing gear has retracted what would cause the pump to run during the first 5 minutes after retraction and again approximately 30 minutes later? Ref: 4. Under hydraulic system servicing what is the warning concerning accumulator servicing? Ref: Prior to starting any investigation of the hydraulic system, place the airplane on jacks. PA-23 Service Manual PG 2A14 Warning The pump will run to stabilize pressure by using the thermal relief valve and 30 minutes later to maintain constant pressure in the event of leaks or pressure loss. PA-23 Service Manual Pg 2F7 Table VI-V Depressurize the system. As an added precaution, have a container ready to catch ex- cessive fluid that will be exhausted through the overboard drain in the nose wheel well when recycling landing gear and flaps. PA-23 Service Manual Pg 1D14 Hydraulic reservoir below operating level, hydraulic pump failure, leak or obstruction in hydraulic lines between pump and powerpak/between 3 landing gears actuator cylinders and the powerpak, internal or external leakage and actuator cylinders, hydraulic powerpak failure Fill power pack with hydraulic fluid, if hand pump functions and lines are not damaged check condition condition of pump. Check each system with hand pump; check lines for damage, check all actuators for damage and replace defective cylinders PA–23 Service Manual page 2F5 Table VI-V
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
  • Access to all documents
  • Unlimited textbook solutions
  • 24/7 expert homework help
5. What is the caution that must be observed when filling and bleeding the landing gear hydraulic system? Ref: 6. On Aircraft: _________ What is the part number for the shimmy Damper? Part number: ________________________ Ref: 7. How is an outside air supply connected to the hydraulic power pack so that it can be operated without engines running? Ref: 8. What are the two cycle and cooling intervals that are required when cycling the gear while using the powerpack? Ref: Before proceeding further, meet with your instructor for your oral examination. Please note that your instructor may ask you 5 random questions based on procedures 1 and 2 of Lab3. Q1: pass no pass Q2: pass no pass An air-tight connection is necessary between the plas- tic tube and valve stem. Without such a connection, a small amount of air will be sucked into the oleo strut during each sequence, resulting in an inordinate amount of air bubbles and a prolonged filling operation. PA-23 Service Manual Pg 1D20 Para 2-55 PA-23 Aztec 752 304 Lining- Shimmy (PAC 31788-00) PA-23 Parts Manual Figure 23 Index 18 Using a test unit of the type described in paragraph 6-5 or 6-6, connect the pressure line of the unit to the inlet fitting of the main relief valve and the suction line to the suction port of the powerpak. PA-23 Service Manual Pg 2D20 Para 6-66c Using landing gear selector lever in airplane, operate gear as desired. NOTE: Gear cycling time can be prolonged by slowly opening the test unit by-pass valve part way. This will bleed off part of the pump flow. After completion of cycling, open test unit by-pass valve and stop pump motor. PA-23 Service Manual Pg 2B9 Para 6-9
Q3: pass no pass Q4: pass no pass Q5: pass no pass Total correct ____ Instructor’s initials _______