Wipaire Wipline 3730 User manual

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

SERVICE MANUAL & ICA
WIPLINE 3730 & 3900 FLOATS
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SERVICE MANUAL & ICA
WIPLINE 3730 & 3900 FLOATS
P/N 1002551 Revision K Page 3
LOG OF REVISIONS
Rev Pages Description Date
A 12 Added an inspection time limit and tolerances for the Nose Block Track wear. 4/1/2006
B 4, 14-16 Updated TOC, added new inspection checklist. 2/23/2007
C&D TOC, 6-8,
16-18 Table of contents updates, expanded corrosion prevention, added steps to insp. checklist. 10/31/2008
E All Reformat of entire document, add green grease as approved grease. 4/16/2013
F 20-21 Added Shear Torque Chart, PR 1440 C Sealant and Tef-Gel, removed Warranty Claim Form. 5/26/2015
G5, 11,
20-21
Added Dow Corning DC4, Corrosion X, and Mobil Aviation Grease SHC 100 to approved
product list. Modied torque limits section. 12/4/2015
H 8 Added reference for Structural Repair Manual part number 1008274 in introduction. 5/1/2019
J11, 13, 21,
23-25
Added information about corrosion limits. Added note about STA-Lube. Added STA-Lube to
Brake Caliper Grease. Removed inspection column from Maintenance Checklist. 8/3/2020
K All
Reformatted manual in new software. Removed Comet Industries GP-730A. Removed content
in Chapter 8 and replaced with note about SRM. Removed Figures 6 through 14 as content is
found in SRM. Added note about nose box sealant and Service Letter 224. Added sections 2.6
through 2.9
2/3/2021
View most current revision of this ICA at www.wipaire.com.

SERVICE MANUAL & ICA
WIPLINE 3730 & 3900 FLOATS
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SERVICE MANUAL & ICA
WIPLINE 3730 & 3900 FLOATS
P/N 1002551 Revision K Page 5
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
CHAPTER 7 ELECTRICAL SYSTEM.............................................................................................................33
CHAPTER 8 REPAIRS AND MAINTENANCE...............................................................................................37
CHAPTER 9 TROUBLE SHOOTING .............................................................................................................47

SERVICE MANUAL & ICA
WIPLINE 3730 & 3900 FLOATS
Page 6 Revision K P/N 1002551
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
FIGURE 5-1 LUBRICATION CHART MAIN GEAR 3730.......................................................................25
FIGURE 7-1 SCHEMATIC, LANDING GEAR ELECTRICAL SYSTEM ...............................................34
FIGURE 7-2 SCHEMATIC, LANDING GEAR ELECTRICAL SYSTEM ...............................................35

SERVICE MANUAL & ICA
WIPLINE 3730 & 3900 FLOATS
P/N 1002551 Revision K Page 7
This manual describes the general servicing and maintenance for the model 3730/3900 oat, 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” part number 1008274. It is available free of charge online at www.wipaire.com.
The service products referred to throughout this manual are described by their trade name and may be purchased
from Wipaire Parts Department.
To contact Wipaire for technical support or parts sales, call or email:
Wipaire, Inc.
Customer Service
1700 Henry Avenue – Fleming Field
South St. Paul, MN 55075
Phone: [phone]
Fax: [phone]
Website: www.wipaire.com
Email: [email protected]
INTRODUCTION

SERVICE MANUAL & ICA
WIPLINE 3730 & 3900 FLOATS
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SERVICE MANUAL & ICA
WIPLINE 3730 & 3900 FLOATS
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CHAPTER 1 GENERAL INFORMATION
CONTENTS
1.0 GENERAL..................................................................................................................................................10

SERVICE MANUAL & ICA
WIPLINE 3730 & 3900 FLOATS
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1.0 GENERAL
The model 3730/3900 seaplane or amphibious oat is an all aluminum constructed oat with watertight
compartments. The actual displacement in fresh water for each oat is 3453 pounds buoyancy for the amphibian.
The amphibian oat is geometrically the same as the seaplane except for the addition of landing gear and internal
structure for the gear.
The water rudder system is cable operated with ball bearing pulleys. Water rudder cables tie into the existing
aircraft rudder system.
The main landing gear has a 5.00 x 5 6-ply tires and the nose landing gear has a 3.50 x 10 4-ply tire. The gear
system is hydraulically actuated and driven by two hydraulic pumps. Brakes are hydraulic and have a caliper on
each main wheel.
Steering on land is accomplished by di󰀨erential braking. The nose wheels are full castering.
Access to the oat interior is accomplished by removing covers on the top deck and covers inside the wheel well.
When necessary, water inside the oat hulls may be removed through pump out cups located on the outboard
edge of each oat top skin.