Piper Pitch Trim Service Manual 753-771 – P.E.T. & AltiMatic Electric Trim Systems PDF

Description

Piper Pitch Trim Service Manual 753-771 – Complete Electric Trim System Coverage

This Piper Pitch Trim Service Manual (Piper part number 753-771) is the factory publication covering the Electric Pitch Trim Systems fitted across Piper’s twin and single-engine line. Originally issued March 1970 and reissued August 1972 with permanent revisions carried through December 20, 1977, this Pitch Trim Service Manual documents the P.E.T. (Piper Electric Trim), M.E.T. (Manual Electric Trim), and AltiMatic III / IIIB / IIIB-1 automatic pitch trim installations used on the PA-23-250, PA-24, PA-28, PA-30, PA-31, PA-31-350, PA-31P, PA-32, PA-34-200 and PA-39 airframes.

• Manual type: Aircraft electric pitch trim system service manual
• Brand/Publisher: Piper Aircraft Corporation, Lock Haven, Pennsylvania
• Document number: 753-771
• Issued: March 1970  |  Reissued: August 1972  |  Revised through: December 20, 1977
• Language: English
• Page count: 244 pages
• File format: PDF

Chapters Covered

• Part I – P.E.T. (Piper Electric Trim) Systems, PA-28/PA-32, PA-24/PA-30/PA-39, PA-23 Series
  • Introduction and Description
  • Theory of Operation
  • Removal and Installation
  • Adjustment Procedures and Operational Checks
  • Test Equipment
  • Schematics
• Part II – AltiMatic III, IIIB and IIIB-1 Electric Trim Systems
  • Introduction and Description
  • Theory of Operation
  • Removal and Installation
  • Adjustment Procedures and Operational Checks
  • Test Equipment
  • Schematics
• Part III – M.E.T. (Manual Electric Trim) Systems, PA-23-250, PA-24/PA-30/PA-39/PA-34
  • Introduction and Description
  • Theory of Operation
  • Removal and Installation
  • Adjustment Procedures and Operational Checks
  • Test Equipment
  • Schematics
• Part IV – AltiMatic III/IIIB/IIIB-1 Electric Trim (Dual Contact Type Trim Sensor), PA-23-250 Six-Place
  • Introduction and Description
  • Theory of Operation
  • Removal and Installation
  • Adjustment Procedure and Operational Checks
  • Test Equipment
  • Schematics

Across its four parts, this Pitch Trim Service Manual walks a technician through every stage of servicing plate-type and pendulous trim sensors, trim servo motors, clutch solenoids, and trim amplifiers, along with the wiring necessary to troubleshoot manual and automatic trim circuits down to the individual schematic.

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What This Piper Pitch Trim Service Manual Enables

With the full 753-771 Pitch Trim Service Manual in hand, a technician can remove and reinstall pendulous and plate-type trim sensors and amplifiers, perform trim sensor centering, set servo cable tension to factory tolerances (with published values for the PA-23-250, PA-24, PA-28, PA-30, PA-31, PA-31-350, PA-31P, PA-32, PA-34-200 and PA-39), adjust servo clutch torque, and run the servo continuity checks needed to confirm a serviceable trim servo motor before it goes back into the airframe. The manual’s Test Equipment sections identify the Piper trim servo test plug (P/N 757 299) and lay out the ohmmeter continuity readings for the CD-45 servo connector, while the Schematics sections carry the wiring diagrams for every P.E.T., M.E.T., and AltiMatic trim configuration described. Correct trim sensor cable tension and clutch torque are safety-critical to reliable pitch trim operation, and this manual is the factory reference for setting both to specification rather than by guesswork.

Delivery is instant: the Piper Pitch Trim Service Manual 753-771 downloads immediately after checkout as a PDF, with no shipping and no waiting. Read it on a laptop, tablet, or phone in the hangar, or print the pages you need at the bench.