four wheel drive diagnosis and repair n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Four Wheel Drive Diagnosis and Repair PowerPoint Presentation
Download Presentation
Four Wheel Drive Diagnosis and Repair

Loading in 2 Seconds...

play fullscreen
1 / 8

Four Wheel Drive Diagnosis and Repair - PowerPoint PPT Presentation


  • 138 Views
  • Uploaded on

Four Wheel Drive Diagnosis and Repair. Possible Problems. Noise Leaks Shifting problems Engagement problems. Noises. Possible causes Worn chain Worn gears Helical Planetary Worn/faulty bearings. Leaks. Possible causes Case Porosity Gaskets/sealing surfaces Input seal

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Four Wheel Drive Diagnosis and Repair' - dierdra


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
possible problems
Possible Problems
  • Noise
  • Leaks
  • Shifting problems
  • Engagement problems
noises
Noises
  • Possible causes
    • Worn chain
    • Worn gears
      • Helical
      • Planetary
    • Worn/faulty bearings
leaks
Leaks
  • Possible causes
    • Case
      • Porosity
      • Gaskets/sealing surfaces
    • Input seal
      • Will cause low transmission fluid level and high transfer case fluid level
    • Output seals
      • Front
      • Rear
shifting problems
Shifting Problems
  • Possible causes
    • Worn shift forks
    • Missing shift fork pads
    • Worn linkage
    • Rusty or sticky linkage
engagement problems
Engagement Problems
  • Transfer case
    • Jumps out of L4
      • Worn range fork
      • Missing fork pads
    • Jumps out of L4 and H4
      • Worn mode fork
      • Missing fork pads
  • Front axle/hubs
    • Front axle does not engage
      • Missing vacuum hose
      • Defective vacuum switch
      • Defective front axle actuator
      • Defective automatic hub
      • Broken manual hub mechanism
automatic transfer case diagnosis
Automatic Transfer Case Diagnosis
  • Refer to factory diagnosis procedures
  • Some models will display a “Service 4WD” light
  • Some models will use the transfer case indicator lights to indicate a problem
    • Lights may also be used to retrieve codes
  • OBDII – use scan tool