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Mod4 January 2015

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Mod4 January 2015

  1. 1. National Child Passenger Safety Certification Training Program Module 4 Seat Belt Systems 4-1
  2. 2. 4-2 Module 4 Objectives • Identify federal standards related to seat belts. • Name types of seat belts and seat belt parts. • Describe types of latchplates. • Describe types of retractors. • Locate latchplates and retractors. • Identify approved additional locking steps. • Explain best practices about seat belt systems to caregivers.
  3. 3. FMVSS 208 • MY 1996: All passenger seat belt systems must lock to secure car seats. • 2008: Lap-and-shoulder belts are required in all seating positions. 4-3
  4. 4. Lap Belts & Lap-and-Shoulder Seat Belts 4-4
  5. 5. Seat Belt Parts 4-5 Buckle Retractor Anchor Webbing Latchplate TIP: Remember seat belt parts using the Acronym BRAWL
  6. 6. Locking Latchplate 4-6
  7. 7. Locking Latchplate (continued) 4-7
  8. 8. Switchable Latchplate 4-8 Adult Position Car Seat Position
  9. 9. Sliding & Sewn-On Latchplates 4-9 Sliding Latchplate Sewn-on Latchplate
  10. 10. Dynamic Locking Latchplate • Lock the lap-and- shoulder belt when loaded by occupant during a crash • Not intended to provide locking of seat belt for a car seat 4-10 Dynamic Locking Latchplates Front Back
  11. 11.  Progress Check Answer these questions in your TG: 1. What are the two types of latchplates that can be locked? 2. What is the step to put a locking latchplate into the locking mode? 3. What is the step to put a switchable latchplate into the locking mode? 4. What is one way to determine if a latchplate can be locked for car seats? 5. What types of latchplates cannot be locked? 4-10a
  12. 12. Emergency Locking Retractor 4-11
  13. 13. Test for an ELR Retractor 1. Pull all the webbing slowly and gently out of the retractor. 2. Allow some of the webbing to go back into the retractor. 3. Try to pull the webbing out again very slowly. If the webbing goes freely in and out of the retractor after you have pulled out all of the webbing, it is an emergency locking retractor. NOTE: When you do this test, do not pull quickly or jerk the webbing because this might trigger the emergency locking features of the retractor. 4-11a
  14. 14. Automatic Locking Retractor 4-12
  15. 15. Test for an ALR Retractor 1. Pull 24 to 36 inches of webbing slowly and gently out of the retractor. 2. Allow some of the webbing (3 to 6 inches) to go back into the retractor. 3. Gently pull the webbing. If no webbing comes out, then it is an automatic locking retractor. 4-12a
  16. 16. Switchable Retractor • Starts in unlocked “comfortable” mode • Switches to a locked mode • Most common system to encounter in field • Once switched to automatic locking mode, belt will only shorten 4-13
  17. 17. Test for a Switchable Retractor 1. Pull all the webbing slowly and gently out of the retractor. 2. Allow some of the webbing to go back into the retractor. You may hear a clicking noise as the webbing goes back in. 3. Gently pull the webbing. If no webbing comes out, then it is a switchable retractor. NOTE: When you do this test, do not pull quickly or jerk the webbing because this might trigger the emergency locking features of the retractor. 4-13a
  18. 18. What Locks the Seat Belt? To test a seat belt in a vehicle and find what locks it: 1. Check the retractor type: If ALR or switchable, the retractor locks the seat belt. 2. If the retractor is an ELR, check for a locking latchplate. 3. If the vehicle is older than 1996 model year, additional steps may be needed to lock the seat belt. 4-13b
  19. 19.  Progress Check Answer these questions in your TG: 1. What are the two types of retractors that can lock in a car seat? 2. How can an emergency locking retractor be identified? 3. What are the steps to identify a switchable retractor? 4-13c
  20. 20. Practice Activity Locate Latchplates and Retractors 4-13d 
  21. 21. When to Use a Locking Clip / Lock-off • Retractor = emergency locking • Latchplate = sliding • Lap-and-shoulder belt all one piece of webbing 4-14 Locking Clip Lock-off
  22. 22. Install a Locking Clip 4-15
  23. 23. When to Use a Belt-Shortening Clip • Retractor = emergency locking • Latchplate = sewn-on • No locking feature (there may or may not be a separate shoulder belt) 4-16
  24. 24. Install a Belt-Shortening Clip 4-17
  25. 25. 4-18 Locking Clip Vs. Belt-Shortening Clip Locking Clip/Lock-Off Belt-Shortening Clip Found on every car seat with a harness Purchased from auto dealer Used with lap-and-shoulder belt with emergency locking retractor and sliding latchplate Used on lap portion of seat belt with emergency locking retractor and sewn-on latchplate Used only on seat belt with retractor as backup Used in place of retractor: no retractor backup available NEVER used to replace belt-shortening clip or to shorten a seat belt Can be used in place of locking clip
  26. 26. Flip the Latchplate or Twist the Buckle Stalk 4-19 Twisted Buckle StalkFlipped Latchplate
  27. 27. Key Questions Related to Seat Belt Systems • How many child passengers are you transporting? • What are their ages and weights? • What types of seat belt systems are in the vehicle? • Are the seat belt systems – buckle, retractor, anchors, webbing, and latchplate – in good working order? 4-20
  28. 28. Key Questions Related to Seat Belt Systems (continued) • Do the seat belts in the vehicle have a locking feature (vehicles since 1996)? • Does the seat belt lock at the latchplate or the retractor? • What are the latchplate and retractor types? 4-21
  29. 29.  Progress Check Answer these questions in the TG: 1. Name the latchplates that do not lock before a crash. 2. Which retractor has no locking feature under normal driving conditions? 3. Which tool would you use with an emergency locking retractor lap belt and a sewn-on latchplate to secure a car seat? 4-21a
  30. 30.  Progress Check (continued) Answer these questions in the TG: 4. Which retractor is always locked when it is buckled under normal driving conditions? 5. What retractor changes from one mode to another? 4-21b
  31. 31. Install a Car Seat with a Locking Latchplate 4-22
  32. 32. Install a Car Seat with an Automatic Locking Retractor 4-23

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