1. Manuals
  2. Brands
  3. Fontaine Manuals
  4. Truck spares
  5. Ultra LT series
  6. Service manual

Fontaine Ultra LT series Service Manual

Fontaine fifth wheel
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Fontaine Fifth Wheel
Ultra LT
Service Manual
FONT AINE
FIFTH WHEEL
®
www.fifthwheel.com • 800-874-9780
Fontaine Fifth Wheel • 7574 Commerce Circle • Trussville, AL 35173
©2010 • LT-156 August 2010

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the Ultra LT series and is the answer not in the manual?

Questions and answers

Summary of Contents for Fontaine Ultra LT series

  • Page 1 Fontaine Fifth Wheel Ultra LT Service Manual FONT AINE FIFTH WHEEL ® www.fifthwheel.com • 800-874-9780 Fontaine Fifth Wheel • 7574 Commerce Circle • Trussville, AL 35173 ©2010 • LT-156 August 2010...

  • Page 2: Table Of Contents

    Disassembly ............ 19-20 Assembly ............21-22 Identify fifth wheel assembly Identify top plate Indentifying features: Ultra LT Series • Fabricated pull handle • Slide assemblies have center- mounted air cylinders • Name tags located on front skirt Identify slides and brackets (Note: see Slides and Bracket section for more information)

  • Page 3: Identify Your Fifth Wheel

    Gross Combination Weight (GCW) 2. When selecting a fifth wheel, if the application or is less than 95,000 lbs or 43,000 kgs. See Fontaine Application vehicle usage places the maximum capacity on a Guide LT-076 for specific application recommendations. Product certain fifth wheel, then the selection of a fifth wheel used in unapproved applications voids manufacture warranty.

  • Page 4: Slides And Brackets

    FONT AINE FONT AINE Fontaine Ultra LT Series Slides and Brackets ® FIFTH WHEEL FIFTH WHEEL ® ® LWO: Outboard slide • Up to 50 lbs lighter than competitive outboard slide systems • 4” slide increments give you slide versatility for improved payload distribution •...
  • Page 5 FONT AINE FONT AINE Fontaine Ultra LT Series Slides and Brackets ® FIFTH WHEEL FIFTH WHEEL ® ® APB: Adustable plate mount • LT top plate with the ABP bracket is the lightest mounting system available for the LT family •...

  • Page 6: Pre-Service Procedures

    A paddle or brush will make this job easier. Do not use a lube plate (high density polyethylene) on top of the fifth wheel or kingpin bolster plate in lieu of grease without prior approval by Fontaine. Retainer pin The additional thickness of this material can prevent the...
  • Page 7 Be sure the grease pockets built into the top plates are full of grease. C. Operation 1. Fontaine’s Ultra LT fifth wheel opens by a straight pull on the release handle until maximum opening stroke is achieved then is moved slightly forward until the handle cut out sets up on the handle block located on the fifth wheel skirt.
  • Page 8 FONT AINE FONT AINE Pre-service procedures FIFTH WHEEL FIFTH WHEEL ® ® Lubrication points: (Ultra LT) Black arrows are lube points when the fifth wheel is on a mount. However, for proper maintenance it is recommended you clean it and re-grease the pivot points... see white arrows. Jaw and wedge (see preservice and lubrication)

  • Page 9: Preventive Maintenance

    Begin with the fifth wheel in the unlocked position. Pull safety glasses. handle to unlock fifth wheel if it is not open. Insert a test kingpin, such as Fontaine Kingpin Tool Step 1. Visual inspection KIT-ULTRA-KP, to close the lock.
  • Page 10 6-7. Special precautions must be taken during cold weather to ensure that the Fontaine Ultra LT locking mechanism operates freely. Ice and sludge can built up and lubricants become thick and binding at low temperatures. In areas or...

  • Page 11: Uncoupling Design

    FONT AINE FONT AINE Uncoupling design FIFTH WHEEL FIFTH WHEEL ® ® Lockbar Adjustment stud First pull of the handle rotates the secondary lock to clear Lockbar (wedge) is stopped by the adjustment stud. the secondary lock stop. Springs apply constant pressure to hold the wedge tight against the stud.
  • Page 12 FONT AINE FONT AINE Uncoupling design FIFTH WHEEL FIFTH WHEEL ® ® Fifth wheel is ready to couple. There is some portion of the As trailer continues to pull the kingpin out of the fifth lockbar in the throat of the fifth wheel. wheel, jaw rotates until it hits stop on cover plate.

  • Page 13: Troubleshooting

    Check to see if cover plate is bent or broken. Finish or call Fontaine Parts Connection. Finish or call Fontaine Parts Connection. 800-874-9780 • www.fifthwheel.com...
  • Page 14 Finish or call Fontaine Parts Connection. Finish or call Check for proper orientation of pull Fontaine Parts Connection. handle and secondary lock. Make sure pull handle bolt is not too tight.
  • Page 15 Remove air cylinder and Replace air line. check for damage i.e. bent shaft, exterior housing or broken internal spring. Finish or call Fontaine Parts Connection. Finish or call Fontaine Parts Connection. 800-874-9780 • www.fifthwheel.com...

  • Page 16: Rebuild

    After inspection you may need to optionally order other kits. See • Moly-based lubricant such as Mobilgrease XHP320 or schematic on page18. equivalent Special tools Fontaine offers special tools for your fifth wheel to help your repairs go fast and easy. KIT-ULTRA-KP Kingpin gauge MSC-GAUGE...
  • Page 17 FONT AINE FONT AINE Rebuild FIFTH WHEEL FIFTH WHEEL ® ® Ultra LT series part identification Cover plate not shown for clarity. Bracket Main Pivot Pivot pin Hex head bolt & Pull liner spring springs clip lock nut handle Adjustment...
  • Page 18 FONT AINE FONT AINE Rebuild FIFTH WHEEL FIFTH WHEEL ® ® Repair kit (KIT-RPR-UL-L) Secondary lock kit (KIT-SEC-ULHH-L) Air cylinder kit (KIT-AA-UL-L) Item Description Quantity Item Description Quantity Item Description Quantity Lock nut, 1/2"-13 Pivot pin, long Lock nut, 1/2"-13 Pivot pin, short Washer, 1/2"...

  • Page 19: Disassembly

    FONT AINE FONT AINE Disassembly FIFTH WHEEL FIFTH WHEEL ® ® Cover plate removed for clarity. Refer to exploded view of assembly on page 18 to identify item number and parts. 2. Remove the jaw spring Degrease fifth wheel before installing new parts 1.
  • Page 20 FONT AINE FONT AINE Disassembly FIFTH WHEEL FIFTH WHEEL ® ® Cover plate removed for clarity. Refer to exploded view of assembly on page 18 to identify item number and parts. 6. Remove the pull handle and 5. Remove the operating handle secondary lock.

  • Page 21: Assembly

    FONT AINE FONT AINE Assembly FIFTH WHEEL FIFTH WHEEL ® ® Refer to exploded view of assembly on page 18 to identify item number and parts. 2. Insert the pull handle and Adequate lubrication should be used secondary lock 1. Insert rotating locking jaw Insert the pull handle.
  • Page 22 FONT AINE FONT AINE Assembly FIFTH WHEEL FIFTH WHEEL ® ® Refer to exploded view of assembly on page 18 to identify item number and parts. 5. Attach the secondary lock latch to 4. Attach the operating handle to the the operating handle locking wedge Attach the operating handle...
  • Page 23 FONT AINE FONT AINE FIFTH WHEEL FIFTH WHEEL ® ® 800-874-9780 • www.fifthwheel.com...
  • Page 24 FONT AINE FIFTH WHEEL ® www.fifthwheel.com ©2010 Fontaine Fifth Wheel • LT-156 September 2010 800-874-9780 • www.fifthwheel.com www.fifthwheel.com All specifications are subject to change without notice.

Table of Contents