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Wipaire Wipline 3730 Service Manual And Instructions

Amphibious and seaplane floats
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SERVICE MANUAL & ICA
WIPLINE 3730 & 3900 FLOATS
WIPLINE FLOATS • SKIS • MODIFICATIONS • AIRCRAFT SALES
AVIONICS • INTERIOR • MAINTENANCE • PAINT REFINISHING
INSTRUCTIONS FOR CONTINUED AIRWORTHINESS
FOR WIPLINE MODEL 3730/3900
AMPHIBIOUS AND SEAPLANE FLOATS
P/N 1002551
SERVICE MANUAL AND
Revision K
Revision K
Page 1

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  • Page 1 SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS WIPLINE FLOATS • SKIS • MODIFICATIONS • AIRCRAFT SALES AVIONICS • INTERIOR • MAINTENANCE • PAINT REFINISHING SERVICE MANUAL AND INSTRUCTIONS FOR CONTINUED AIRWORTHINESS FOR WIPLINE MODEL 3730/3900 AMPHIBIOUS AND SEAPLANE FLOATS...
  • Page 2 SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS THIS PAGE INTENTIONALLY LEFT BLANK Page 2 Revision K P/N 1002551...
  • Page 3 Chapter 8 and replaced with note about SRM. Removed Figures 6 through 14 as content is 2/3/2021 found in SRM. Added note about nose box sealant and Service Letter 224. Added sections 2.6 through 2.9 View most current revision of this ICA at www.wipaire.com. P/N 1002551 Revision K Page 3...
  • Page 4 SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS THIS PAGE INTENTIONALLY LEFT BLANK Page 4 Revision K P/N 1002551...

  • Page 5: Table Of Contents

    SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS CONTENTS INTRODUCTION ...............................7 CHAPTER 1 GENERAL INFORMATION ......................9 CHAPTER 2 FLOAT HULL MAINTENANCE ....................11 CHAPTER 3 CORROSION ..........................17 CHAPTER 4 HYDRAULIC SYSTEM ......................19 CHAPTER 5 MAIN LANDING GEAR AND RETRACTOR ................23 CHAPTER 6 NOSE GEAR AND RETRACTOR .....................29...
  • Page 6 SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS LIST OF FIGURES FIGURE 2-1 JACK CRADLE RECOMMENDED MODIFICATION ............14 FIGURE 2-2 JACKING LOCATION ......................14 FIGURE 2-3 FLOAT SECURING LOCATIONS ..................15 FIGURE 2-4 FLOAT SECURING LOCATIONS OVERVIEW ..............16 FIGURE 4-1 HYDRAULIC SYSTEM 185....................21 FIGURE 4-2 HYDRAULIC SYSTEM 206....................22...

  • Page 7: Introduction

    This manual describes the general servicing and maintenance for the model 3730/3900 float, including hull and landing gear. For services and repairs not covered by this manual contact Wipaire Customer Service. When performing standard repairs for Wipline Aluminum Floats, please refer to the “Structural Repair Manual For Wipline Aluminum Floats”...
  • Page 8 SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS THIS PAGE INTENTIONALLY LEFT BLANK Page 8 Revision K P/N 1002551...

  • Page 9: Chapter 1 General Information

    SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS CHAPTER 1 GENERAL INFORMATION CONTENTS 1.0 GENERAL ..............................10 P/N 1002551 Revision K Page 9...
  • Page 10 SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS 1.0 GENERAL The model 3730/3900 seaplane or amphibious float is an all aluminum constructed float with watertight compartments. The actual displacement in fresh water for each float is 3453 pounds buoyancy for the amphibian.

  • Page 11: Chapter 2 Float Hull Maintenance

    SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS CHAPTER 2 FLOAT HULL MAINTENANCE CONTENTS 2.1 GENERAL ..............................12 2.2 HARD LANDING AND DAMAGE INVESTIGATION ................12 2.3 CLEANING ..............................12 2.4 SEALING ..............................12 2.5 TOWING ..............................13 2.6 HOISTING ..............................13 2.7 LEVELING ..............................13 2.8 JACKING PROCEDURES ........................13...

  • Page 12: General

    Refer to Products List for recommended sealants and caulk. Note: Special attention should be taken on nose box sealant inspection. See Wipaire Service Letter 224 on the Wipaire website for details.

  • Page 13: Towing

    If the lifting rings are not installed, reference applicable aircraft maintenance/ service manual for additional hoisting specifications. Lake & Air Training and Pilot Shop has this hoisting rig available for purchase. Contact Wipaire Customer Service for additional guidance in removal or installation of floats.

  • Page 14: Figure 2-1 Jack Cradle Recommended Modification

    (X = WIDTH OF CRADLE) FIGURE 2-1 JACK CRADLE RECOMMENDED MODIFICATION NOTE: This is not required and Wipaire does not have the parts for modification. It is recommended a similar modification be performed to the jack saddle to prevent the slippage of the cradle.

  • Page 15: Figure 2-3 Float Securing Locations

    SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS NOTE: A smaller jack may be needed to slightly lift the float into a high enough position for the main jack. 1. Secure floats with fore and aft supports as shown in Figure 2-3 and Figure 2-4.

  • Page 16: Figure 2-4 Float Securing Locations Overview

    SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS Fore Cradle Cradle Stand Aft Cradle Fore Stand Support Support (8000A MODEL SHOWN FOR REFERENCE ONLY) FIGURE 2-4 FLOAT SECURING LOCATIONS OVERVIEW 2.9 JACK REMOVAL Make sure nothing is under or above the airplane or floats when removing the jacks from the aircraft 1.

  • Page 17: Chapter 3 Corrosion

    SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS CHAPTER 3 CORROSION CONTENTS 3.0 CORROSION .............................18 P/N 1002551 Revision K Page 17...
  • Page 18 WIPLINE 3730 & 3900 FLOATS 3.0 CORROSION Reference the Wipaire Structural Repair Manual (SRM) for allowable corrosion/material loss limits. Corrosion is a reaction that destroys metal by an electrochemical action that converts metal to oxide. Corrosion is accelerated when in contact with dissimilar metals such as aluminum and steel, or any material which absorbs moisture like wood, rubber, or dirt.

  • Page 19: Chapter 4 Hydraulic System

    SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS CHAPTER 4 HYDRAULIC SYSTEM CONTENTS 4.1 OPERATION ..............................20 4.2 MAINTENANCE ............................20 4.3 BLEEDING THE SYSTEM ........................20 P/N 1002551 Revision K Page 19...
  • Page 20 SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS 4.1 OPERATION The hydraulic system consists of an electro-hydraulic power pack with a non-reversing type pump and a hand pump backup tied in between the return and pressure lines (see hydraulic schematic in figures 3 & 4). The pump and reservoir assembly is mounted in the left float.

  • Page 21: Figure 4-1 Hydraulic System 185

    SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS FIGURE 4-1 HYDRAULIC SYSTEM 185 (Numbers refer to Parts Manual only) P/N 1002551 Revision K Page 21...

  • Page 22: Figure 4-2 Hydraulic System 206

    SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS FIGURE 4-2 HYDRAULIC SYSTEM 206 (Numbers refer to Parts Manual only) Page 22 Revision K P/N 1002551...

  • Page 23: Chapter 5 Main Landing Gear And Retractor

    SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS CHAPTER 5 MAIN LANDING GEAR AND RETRACTOR CONTENTS 5.1 OPERATION ..............................24 5.2 LUBRICATION ............................24 5.3 REMOVAL OF MAIN GEAR AND RETRACTOR ..................26 5.4 ADJUSTMENT – MAIN GEAR ........................26 5.5 INSERTION ...............................26 5.6 SERVICING OLEO STRUT ........................27...

  • Page 24: Operation

    SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS 5.1 OPERATION The main landing gear retractor is merely a hydraulic cylinder which pushes and pulls a drag brace. The locking is accomplished using a small amount of lost motion of the hydraulic cylinder to pivot a hook on the drag brace.

  • Page 25: Figure 5-1 Lubrication Chart Main Gear 3730

    SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS 1. STANDARD GREASE ZERK 2. NEEDLE POINT GREASE HOLE 3. APPLY GREASE THESE SURFACES FIGURE 5-1 LUBRICATION CHART MAIN GEAR 3730 P/N 1002551 Revision K Page 25...

  • Page 26: Removal Of Main Gear And Retractor

    SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS 5.3 REMOVAL OF MAIN GEAR AND RETRACTOR The landing gear is simple to remove, as there are only two pinion bolts, a drag link bolt and two brake lines holding it in. To remove the retracting mechanism, disconnect the gear light wires in the inner gear well side compartment and the two hydraulic lines.

  • Page 27: Servicing Oleo Strut

    SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS 5.6 SERVICING OLEO STRUT The oleo is easy to service if the following steps are followed: 1. If the oleo is removed from the float, hold in an upright position similar to when mounted in float.
  • Page 28 SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS THIS PAGE INTENTIONALLY LEFT BLANK Page 28 Revision K P/N 1002551...

  • Page 29: Chapter 6 Nose Gear And Retractor

    SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS CHAPTER 6 NOSE GEAR AND RETRACTOR CONTENTS 6.1 OPERATION ..............................30 6.2 WHEEL AND CASTOR ..........................30 6.3 LUBRICATION ............................30 6.4 REMOVAL ..............................30 6.5 ADJUSTMENT ............................30 6.6 TIRE SIZE ..............................31 6.7 INSERTION ...............................31 6.8 NOSE BOX TRACK WEAR ........................31...
  • Page 30 SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS 6.1 OPERATION The nose gear uses a spring leaf leg very similar to a Cessna style with a hydraulic driven truck-track retracting mechanism. A hydraulic ram is connected directly to the truck to which the spring leaf is mounted. The rear two rollers on the truck assembly which make up the over-center lock section follow a deeper groove in the track casting and for this reason do not go around the corner but straight ahead to make the over-center down lock.
  • Page 31 SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS 6.6 TIRE SIZE 1. 4:10 NHS 4 ply 2. PSI 38 lbs 6.7 INSERTION Insertion of the nose gear retractor is simply the reverse of the removal. When reinstalling the nose box, be sure to remove all old deposits of RTV.
  • Page 32 SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS THIS PAGE INTENTIONALLY LEFT BLANK Page 32 Revision K P/N 1002551...

  • Page 33: Chapter 7 Electrical System

    SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS CHAPTER 7 ELECTRICAL SYSTEM CONTENTS 7.0 ELECTRICAL SYSTEM ..........................34 P/N 1002551 Revision K Page 33...

  • Page 34: Figure 7-1 Schematic, Landing Gear Electrical System

    SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS 7.0 ELECTRICAL SYSTEM The electrical system consists of the following components: Pump motor, pressure switch, solenoid contractor, 20 amp circuit breaker and the separate system of indicating lights and switches as per the electrical schematic of Figure 7-1 and Figure 7-2.

  • Page 35: Figure 7-2 Schematic, Landing Gear Electrical System

    SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS FIGURE 7-2 SCHEMATIC, LANDING GEAR ELECTRICAL SYSTEM P/N 1002551 Revision K Page 35...
  • Page 36 SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS THIS PAGE INTENTIONALLY LEFT BLANK Page 36 Revision K P/N 1002551...

  • Page 37: Chapter 8 Repairs And Maintenance

    SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS CHAPTER 8 REPAIRS AND MAINTENANCE CONTENTS 8.1 FLOAT HULL MAINTENANCE – GENERAL ...................38 8.2 REPAIRING FLOAT HULL SKINS ......................38 8.3 REPAIRING FLOAT HULL EXTRUSIONS ....................38 8.4 SERVICE SCHEDULE ..........................38 8.5 INSPECTION CHECKLIST........................42...
  • Page 38 3M Scotchweld primer after being cleaned and acid etched. Exterior surfaces are cleaned and alodined then primed with an epoxy-based primer and painted with enamel. 8.2 REPAIRING FLOAT HULL SKINS For all float skin structural repairs, refer to Wipaire's Structural Repair Manual (SRM) part number 1008274. 8.3 REPAIRING FLOAT HULL EXTRUSIONS For all float extrusion structural repairs, refer to Wipaire's Structural Repair Manual (SRM) part number 1008274.
  • Page 39 SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS Wheel Bearings *HCF Grease, P/N 605 HCF Industries *Aeroshell 22 Shell Global Solutions *Green Grease, Multi-Purpose Green Grease Inc. Rust Protection Boeshield T9 Rut Protection Boeing Company ACF-50 Rust Protection Corrosion X...
  • Page 40 SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS As general inspection guidelines, each of the following areas should be inspected for their own unique attributes: Movable Parts For lubrication, servicing, security of attachment, binding, excessive wear, safetying, proper operation, proper adjustment, correct travel, cracked fittings, security of hinges, defective bearings, cleanliness, corrosion, deformation, sealing, and tension.
  • Page 41 SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS Joints Spray all joints with light penetrating oil such as LPS 3 to ensure lubrication at all times. Electrical Connections Apply SP-400 SOFT SEAL or LPS 500 to all electrical connections to prevent corrosion.
  • Page 42 SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS 8.5 INSPECTION CHECKLIST Page 42 Revision K P/N 1002551...
  • Page 43 SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS P/N 1002551 Revision K Page 43...
  • Page 44 SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS Page 44 Revision K P/N 1002551...
  • Page 45 SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS P/N 1002551 Revision K Page 45...
  • Page 46 SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS THIS PAGE INTENTIONALLY LEFT BLANK Page 46 Revision K P/N 1002551...

  • Page 47: Chapter 9 Trouble Shooting

    SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS CHAPTER 9 TROUBLE SHOOTING CONTENTS 9.0 TROUBLE SHOOTING ..........................48 P/N 1002551 Revision K Page 47...
  • Page 48 SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS 9.0 TROUBLE SHOOTING 1. PROBLEM – Powerpack does not run after gear selection. Probable cause: a. Circuit breaker out. b. Pressure switch not pulling in at low cut-in. c. Solenoid switch not pulling in.
  • Page 49 SERVICE MANUAL & ICA WIPLINE 3730 & 3900 FLOATS Remedy: a. Verify leak is not external by checking fluid level in reservoir and looking at couplings for oil leaks—then disconnect and cap off hydraulic actuators one at a time, and find the leaky one by process of elimination. If...

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