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Airglas LH4000 Installation Instructions Manual

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Download this manual See also: Service and Maintenance Instructions
Airglas, Inc.
®
Installation Instructions
MANUAL NO. LH4000-105
MODEL LH4000 Ski Kit
For
Cessna 180 and 185 Aircraft
Cage Code 17564
MANUAL REVISION C
December 3, 2012
Airglas, Inc.
THIS MANUAL INCLUDES INFORMATION PROPRIETARY TO
AND SHALL NOT BE USED TO MANUFACTURE OR REPRODUCE ANY PART OR
Airglas, Inc.
ASSEMBLY WITHOUT THE PRIOR WRITTEN PERMISSION OF

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  • Page 1 Airglas, Inc. ® Installation Instructions MANUAL NO. LH4000-105 MODEL LH4000 Ski Kit Cessna 180 and 185 Aircraft Cage Code 17564 MANUAL REVISION C December 3, 2012 Airglas, Inc. THIS MANUAL INCLUDES INFORMATION PROPRIETARY TO AND SHALL NOT BE USED TO MANUFACTURE OR REPRODUCE ANY PART OR Airglas, Inc.
  • Page 2 Airglas, Inc. Manual # LH4000-105 This Page Intentionally Left Blank P a g e MANUAL REVISION C December 3, 2012 Airglas, Inc. THIS MANUAL INCLUDES INFORMATION PROPRIETARY TO AND SHALL NOT BE USED TO MANUFACTURE OR REPRODUCE ANY PART OR Airglas, Inc.
  • Page 3 Airglas, Inc. Manual # LH4000-105 Record of Revision REV DATE Affected EXPLANATION OF REVISION LEVEL Pages Initial 25 Jan 2005 Original Document Release July 11, 1, 3, 8, 14, 2005 16, 28, 29, August 20, Clifford D. Belleau Added alternate hydraulic cylinder. Revised rigging instructions.

  • Page 4: Table Of Contents

    Airglas, Inc. Manual # LH4000-105 Table of Contents Page Introduction and Description Placards and Markings Initial Installation 7-23 3.1 Ski Rigging Bracket Installations 7-12 3.2 Hydraulic Installation-Fuselage 12-16 3.3 Electrical Installation 16-18 3.4 Stub Axle Installations 18-20 3.5 Ski Installation 20-21 3.6 External Hydraulic Installation...

  • Page 5: Introduction And Description

    The installation of the LH4000 hydraulic wheel ski kit allows the aircraft to operate on paved or hard surfaces, and snow. The skis are actuated by a hydraulic cylinder on each ski with an electric/hydraulic or hand pump to provide operating pressure.

  • Page 6: Placards And Markings

    APPLYING POWER FOR BALKED LANDING GO-AROUND Place placard on instrument panel in full view of pilot. DO NOT LAND ON SNOW WITH TIRES DOWN WHEN AIRGLAS LH4000 SKIS ARE INSTALLED Place placard on instrument panel in full view of pilot.

  • Page 7: Initial Installation

    Airglas, Inc. Manual # LH4000-105 INITIAL INSTALLATION PERSONNEL REQUIRED: Tools Required: Materials Required:  A&P MECHANIC   1 OZ. SCOTCH WELD 3M HAND TOOLS, SMALL 2216 B/A EPOXY  ASSISTANT  #10, #13, and a 1/8”  18 EA. THOMAS &...
  • Page 8 Airglas, Inc. Manual # LH4000-105 3.1 SKI RIGGING BRACKETS AND ATTACH FITTINGS- CONTINUED Rigging Bracket Installation: 1. Disconnect battery and tag “Maintenance in Progress”. 2. Remove pilot and co-pilot seats (retain seat stops). Remove rear seat(s) (retain hardware) 3. Remove the left and right forward interior side panels (retain hardware).
  • Page 9 Airglas, Inc. Manual # LH4000-105 3.1 SKI RIGGING BRACKETS AND ATTACH FITTINGS-CONTINUED LW3600-180A-9 Forward Rigging Bracket Installed (LW3600-180A-10 is opposite) Photo 1 6. Remove the cowling in accordance with Cessna Service Manual. 7. Support the engine with a hoist using the lifting eye provided by the engine manufacturer.
  • Page 10 Airglas, Inc. Manual # LH4000-105 3.1 SKI RIGGING BRACKETS AND ATTACH FITTINGS-CONTINUED Front Safety Cable Bracket Installation (Note: Notch lower cowling to clear bracket) Figure 3 1. Using figure 4 and photo’s 2 and 3, install the left and right rear check cable fittings part number LH3600-17 and LH3600-18.
  • Page 11 Airglas, Inc. Manual # LH4000-105 3.1 SKI RIGGING BRACKETS AND ATTACH FITTINGS-CONTINUED DRILL (5) EXISTING RIVETS, REAM (4) WITH #10 DRILL BIT. ALIGN LH3600-17 FOR BEST MS21044N3 NUT EDGE DISTANCE. BACK DRILL NAS1149F0363P WASHER LH3600-17. AN3-5A BOLT LH3600-17-1 DOUBLER INSTALL DOUBLER UNDER FORWARD BOLTS, TRIM AS REQUIRED.

  • Page 12: Hydraulic Installation-Fuselage

    Hydraulic System – The hydraulic system supplied with the skis uses an Electric/Hydraulic Pump, (a hand pump is optional but not offered through Airglas, Inc.) to pump fluid to a hydraulic actuating cylinder mounted on the ski. The Electric/Hydraulic Pump is intended to be mounted behind the cabin area aft of station 108.
  • Page 13 Airglas, Inc. Manual # LH4000-105 3.2 HYDRAULIC INSTALLATION-FUSELAGE-CONTINUED 1. Remove aft cabin interior panel at fuselage station 108. 2. Remove carpet and floor inspection panels from fuselage station 27 to fuselage station 208. 3. If the aircraft is equipped with an aft baggage compartment, remove the baggage floor.
  • Page 14 Airglas, Inc. Manual # LH4000-105 3.2 HYDRAULIC INSTALLATION-FUSELAGE-CONTINUED Electric Pump Mounting -Photo 5 5. Use Figure 5 as a guide to fabricate and route the hydraulic lines. Use care to ensure they do not interfere with flight controls and are not able to chafe.
  • Page 15 Airglas, Inc. Manual # LH4000-105 3.2 HYDRAULIC INSTALLATION-FUSELAGE-CONTINUED 8. Remove all drill shavings. Hydraulic Schematic – Figure 5 15 | P a g e MANUAL REVISION C December 3, 2012 Airglas, Inc. THIS MANUAL INCLUDES INFORMATION PROPRIETARY TO AND SHALL NOT BE USED TO MANUFACTURE OR REPRODUCE ANY PART OR Airglas, Inc.

  • Page 16: Electrical Installation

    Airglas, Inc. Manual # LH4000-105 3.2 HYDRAULIC INSTALLATION-FUSELAGE-CONTINUED Optional Hand Pump Mounting - Photo 6 3.3 ELECTRICAL INSTALLATION Ski Pump Switch Installation-Photo 7 16 | P a g e MANUAL REVISION C December 3, 2012 Airglas, Inc. THIS MANUAL INCLUDES INFORMATION PROPRIETARY TO AND SHALL NOT BE USED TO MANUFACTURE OR REPRODUCE ANY PART OR Airglas, Inc.
  • Page 17 Airglas, Inc. Manual # LH4000-105 3.3 ELECTRICAL INSTALLATION-CONTINUED Ski Pump Electrical Schematic-Figure 6 (Ref: Drawing GLH3000-7) 1. Select an unused instrument hole to the left of the throttle control and to the right of the pilots control yoke. If no unused instrument hole is available, install the switch, lights, and circuit breaker between the pilots yoke and the throttle as depicted in photo 7.

  • Page 18: Stub Axle Installations

    Airglas, Inc. Manual # LH4000-105 3.3 ELECTRICAL INSTALLATION-CONTINUED b. Switch sends power to the green or orange wire when “Wheels” are selected. This will pressurize the “DOWN” side of the pump. c. Make sure the “UP” Port on the pump goes to the FWD fitting on the ski actuator cylinder.
  • Page 19 Airglas, Inc. Manual # LH4000-105 3.4 OUTBOARD AND INBOARD STUB INSTALLATION-CONTINUED Inboard Stub Axle Installation-Figure 8 Note: It is suggested that the aircraft wheel alignment is confirmed using Cessna service instructions prior to installation of the skis. 1. Hoist or jack aircraft until wheels are clear of ground.

  • Page 20: Ski Installation

    Confirm that NAS145 and NAS146 bolts (or equivalent) are installed on the aircraft. No AN bolts may be used to secure the axle to the gear leg with the LH4000 ski installation. 8. Place the LH3600-6 inboard flange on the landing gear leg. Confirm that the bolts are long enough to allow the MS21045 nuts to fully engage with at least 1 thread protruding beyond the nut.

  • Page 21: External Hydraulic Installation

    Airglas, Inc. Manual # LH4000-105 3.5 SKI INSTALLATION-CONTINUED LH3600-10 Installation-Photo 8 and 9 3.6 EXTERNAL HYDRAULIC INSTALLATION Additional Clamp Installation-Photo 10 1. Fabricate hydraulic lines using MIL-H-8794-4 hose and compatible MS24587-4, MS27226-4, or MS27224-4 connectors. 2. Assemble hoses in accordance with AC 43.13-1B Chapter 9 Section 2 paragraph 9-30.

  • Page 22: Ski Rigging Installation

    Airglas, Inc. Manual # LH4000-105 3.6 EXTERNAL HYDRAULIC INSTALLATION-CONTINUED 4. Secure the hoses along the top of the ski using the two MS21919WDG16 clamps provided. (larger or smaller clamps may be used if required) 5. Secure hoses using additional clamps Cessna part number 1441001-2 or equivalent as indicated in photo 10.

  • Page 23: Ski Installation Check-Out

    (using retained seat stops). Install rear seat(s) (using retained hardware). 8. File FAA form 337 installing Airglas LH4000 skis in accordance with STC SA02244AK. 9. Record installation in aircraft maintenance records. 23 |...

  • Page 24: Specifications

    Airglas, Inc. Manual # LH4000-105 SKI SPECIFICATIONS Ski Specifications are as follows: Length= 84” Width= 24” Height= 5” TO TOP OF TUNNEL (7” at axle centerline) Weight= 73 lbs. (each ski) Square Inches= 1435 (each ski) Center of Gravity= 12.5” FWD OF AXLE 5.0 TROUBLE SHOOTING...

  • Page 25: Drawings And Diagrams

    Airglas, Inc. Manual # LH4000-105 5.0 TROUBLE SHOOTING-CONTINUED Problem: Bungee’s vibrate in flight. Correction: Ensure the bungee has at least one full twist when installed. 6.0 DRAWINGS AND DIAGRAMS Descriptive Data List No. LH3600-1 LH4000-106 Rev B December 3, 2012...

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