Your SlideShare is downloading. ×
0
Altenator
Altenator
Altenator
Altenator
Altenator
Altenator
Altenator
Altenator
Altenator
Altenator
Altenator
Altenator
Altenator
Altenator
Altenator
Altenator
Altenator
Altenator
Altenator
Altenator
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×
Saving this for later? Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime – even offline.
Text the download link to your phone
Standard text messaging rates apply

Altenator

4,232

Published on

alternator principles and construction

alternator principles and construction

1 Comment
2 Likes
Statistics
Notes
No Downloads
Views
Total Views
4,232
On Slideshare
0
From Embeds
0
Number of Embeds
5
Actions
Shares
0
Downloads
165
Comments
1
Likes
2
Embeds 0
No embeds

Report content
Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
No notes for slide

Transcript

  • 1. ALTERNATOR OVERHAUL AUTOMOTIVE TECHNOLOGY
  • 2. BEFORE YOU REMOVE ALTERNATOR • Pay attention to how wires are connected • Pay attention to Alternator oreintation • Disconnect Battery!! • Check Belt tension and condition • Check wiring condition
  • 3. DISASSEMBLY Part number • Mark frames for correct reassembly • Note spacers placement • Identify Alternator by Part Number • Note Terminal Condition & orientation
  • 4. INSPECTION OF “COM” END HOUSING • Bearing condition • Stator windings • Pulley condition • Brush wear • Internal Wiring Connections • Component external damage
  • 5. INSPECTION OF DRIVE END HOUSING (FRAME) • Bearing race housings • Frame Condition – Cracks – Wear – Stripped threads • Mounting boss condition
  • 6. • Rotor slip ring condition • Rotor Windings external condition • Shaft condition • Cooling Fan condition
  • 7. TESTING ROTOR FIELD COIL • Rotor resistance – GM 2.4 to 3.5 ohms – Ford 3.0 to 5.5 ohms – Chrysler 3.0 to 6.0 ohms • Some shop manuals give rotor specifications in amps.
  • 8. ROTOR TESTING FOR GROUNDED SLIP RINGS • Inspect rotor lead soldering area • Test rotor for Grounds to shaft • Can use ohmmeter • Can use 110 Volt continuity tester
  • 9. ROTOR TESTING FOR GROUND TO ROTOR FRAME • Test rotor for grounds to rotor frame (open circuit cats claw) • Should be • Inspect cats claw for signs of rubbing on stator
  • 10. DIODE TESTING • Check Positive diodes for one way operation by switching leads. • Can test with diode check function of DVOM • Can check with 110V diode tester tool. • Check Negative Diodes also • Must only get Note: Diodes can be checked on continuity one way!!! car with Sun VAT 40
  • 11. TEST STATOR FOR CONTINUITY • Check Stator for Continuity between phases of windings • Usually check resistance of windings • Must be same resistance
  • 12. TEST STATOR FOR • Make sure GROUNDS Stator windings are not grounded to frame! • Inspect windings for worn spots on windings. • Check looseness
  • 13. DELCO REMY 25SI AND 30SI ALTERNATORS
  • 14. ADVANTAGES OF HEAVY DUTY 25-SI ALTERNATOR • BRUSHLESS - ROTOR WORKS ON PERMANENT MAGNETISM • BELT OR GEAR DRIVEN • 12V, 24V, 32V • 85 AMP TO 300 AMP CAPABILITY • ELECTRONIC REGULATOR • 12V - 24V COMBINATION OUTPUT • SOME ARE OIL COOLED
  • 15. LOTS OF WIRE CONNECTIONS!!!
  • 16. 25SI ROTOR • Rotor doesn’t spin in this alternator • Stator is stationary also • Inspect Rotor and stator for interference • Check stator and rotor as any other alternator
  • 17. 25SI ROTOR HOUSING • Inspect for interference • Inspect bearing races • Remove bearing race with bearing splitter • Inspect D.E. Bearing • Inspect C.E. Bearing • Inspect Housing threads and condition
  • 18. REPAIR • Clean components – OK to clean in solvent but make sure dry • Replace Bearings – Don’t spin bearings – Inspect races closely – Use proper procedures to replace and remove bearings. • Replace Brushes and Springs • Replace other faulty components
  • 19. REASSEMBLY • Proper Torque • Paint Housing if necessary • Use Lock Tight on H.D. Alternators • Make sure there is no tension on wiring • Make sure connections are tight!! • Always retest output after Overhaul.
  • 20. Final Bench Testing • Check amperage output – Look up specifications In book – Listen for abnormal noises • Check internal regulator operation – Make sure cutoff voltage is correct. • Test Light/Indicator circuits also. • Reinstall on Vehicle

×