chapter 5 landing gear - robinson helicopter · pdf filechapter 5 landing gear 5.000 landing...

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CHAPTER 5 LANDING GEAR Section Title Page 5.000 Landing Gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.1 5.001 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.1 5.002 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.1 5.100 Landing Gear Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.1 5.110 Landing Gear Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.1 5.120 Landing Gear Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.3 5.200 Cross Tubes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.3 5.210 Cross Tube Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.3 5.220 Cross Tube Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.6 5.300 Skid Tubes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.6 5.310 Skid Tube Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.6 5.320 Skid Tube Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.6 5.330 Skid Shoe Removal and Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.6 5.340 Ground Handling Wheel Support Removal and Replacement . . . . . . . . . . . 5.8 5.400 Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.8 5.500 Float Ship Landing Gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.9 5.510 Float Landing Gear Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.9 5.520 Float Landing Gear Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.10 5.530 Float Tube Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.11 5.540 Float Tube Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.11 5.550 Float Tube Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.13 OCT 2014 Chapter 5 Landing Gear Page 5.i

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Page 1: CHAPTER 5 LANDING GEAR - Robinson Helicopter · PDF fileCHAPTER 5 LANDING GEAR 5.000 Landing Gear 5.001 Introduction This section covers removal and reinstallation of the landing gear

CHAPTER 5

LANDING GEAR

Section Title Page

5.000 Landing Gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.15.001 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.15.002 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.1

5.100 Landing Gear Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.15.110 Landing Gear Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.15.120 Landing Gear Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.3

5.200 Cross Tubes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.35.210 Cross Tube Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.35.220 Cross Tube Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.6

5.300 Skid Tubes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.65.310 Skid Tube Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.65.320 Skid Tube Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.65.330 Skid Shoe Removal and Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.65.340 Ground Handling Wheel Support Removal and Replacement . . . . . . . . . . . 5.8

5.400 Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.85.500 Float Ship Landing Gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.9

5.510 Float Landing Gear Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.95.520 Float Landing Gear Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.105.530 Float Tube Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.115.540 Float Tube Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.115.550 Float Tube Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.13

OCT 2014 Chapter 5 Landing Gear Page 5.i

Page 2: CHAPTER 5 LANDING GEAR - Robinson Helicopter · PDF fileCHAPTER 5 LANDING GEAR 5.000 Landing Gear 5.001 Introduction This section covers removal and reinstallation of the landing gear

Intentionally Blank

Page 5.ii Chapter 5 Landing Gear OCT 2014

Page 3: CHAPTER 5 LANDING GEAR - Robinson Helicopter · PDF fileCHAPTER 5 LANDING GEAR 5.000 Landing Gear 5.001 Introduction This section covers removal and reinstallation of the landing gear

CHAPTER 5

LANDING GEAR

5.000 Landing Gear

5.001 Introduction

This section covers removal and reinstallation of the landing gear assembly, cross tubes, skid tubes, skid shoes, and ground handling wheel supports.

5.002 Description

A skid-type landing gear is used. Most hard landings will be absorbed elastically. However, in an extremely hard landing, the struts will hinge up and outward as the crosstube yields (becomes permanently bent) to absorb the impact. Slight crosstube yielding is acceptable. However, yielding which allows the tail skid to be within 34 inches (24 inches for R22 Standard or HP) of the ground when the helicopter is sitting empty on level pavement requires crosstube replacement.

Abrasion-resistant wear shoes are mounted on the bottom of the skids. These shoes should be inspected periodically, particularly if autorotation landings with ground contact have been performed. Have skid shoes replaced whenever the thinnest point in the wear area is less than 0.06 inches (1.5 mm).

R22 Mariners have permanently inflated utility floats mounted to skid tubes and incorporate aft skid extensions to support the floats.

5.100 Landing Gear Assembly

5.110 Landing Gear Removal

1. Remove forward cross tube cover.

2. Two methods may be used to hoist or jack helicopter for gear removal:

a. Place a foam-covered contour block under the vertical firewall (see Figure 5-1). Install skid stand under tail. Using a jack under each end of contour block, raise helicopter until skids clear ground by approximately 4 inches.

CAUTION

Contour block must be directly under vertical firewall to support weight of the helicopter.

b. Hoist helicopter by main rotor hub per § 1.210 until skids clear ground by approximately 4 inches.

3. Disconnect A936 ground wire at aft-right elbow.

4. Remove four landing gear attach bolts. Slide landing gear clear of helicopter.

NOTE

When using method 2a, remove one skid tube to move landing gear clear of helicopter.

OCT 2014 Chapter 5 Landing Gear Page 5.1

Page 4: CHAPTER 5 LANDING GEAR - Robinson Helicopter · PDF fileCHAPTER 5 LANDING GEAR 5.000 Landing Gear 5.001 Introduction This section covers removal and reinstallation of the landing gear

FIGURE 5-1 JACKING

Page 5.2 Chapter 5 Landing Gear OCT 2014

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Page 8: CHAPTER 5 LANDING GEAR - Robinson Helicopter · PDF fileCHAPTER 5 LANDING GEAR 5.000 Landing Gear 5.001 Introduction This section covers removal and reinstallation of the landing gear
Page 9: CHAPTER 5 LANDING GEAR - Robinson Helicopter · PDF fileCHAPTER 5 LANDING GEAR 5.000 Landing Gear 5.001 Introduction This section covers removal and reinstallation of the landing gear
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