Jump to content
Posted
  • Staff

Replacing Diodes and Brushes in a Denso Alternator

 Replacing         Replacing Diodes and Brushes in a Denso Alternator

 

Remove 1the 0mm nut at the B+ post, the three 8mm nuts and the 8mm head screw.  You can use a small screwdriver and gently pry and lift the cove off.  The diodes and brushes are now exposed.   

IMG_2434.JPG.25e8f345897e65f34c60739c428bcf03.JPG 

 

 Remove the dust cover and four screws that hold in the brush pack assembly, lift assembly out.

IMG_2438.JPG.731e1b160b38576aaedd7c923258a8b0.JPG

 

 Remove the four Philip head screws that hold the diode/rectifier bridge in, lift diode/rectifier bridge out.

IMG_2436.JPG.1a2e170646d786e30cdf1b3a725de8ce.JPG

  

Remove the one screw holding the brush pack to the brush pack assembly.

IMG_2455.JPG.78c4f075f37a72bbe7f5875ed2953078.JPG

 

 Clean the slip rings with 400 grit wet/dry sandpaper.

IMG_2439.JPG.eeff33c5577a276b09194e242afaa27a.JPG

 

Assemble with new diode/rectifier bridge and brushes by reversing the disassembly steps.  When installing the new brushes try holding them into the housing with a small pocket screwdriver or a feeler gauge while sliding over the slip rings.   When installing the rear metal cover do not over tighter the 10mm nut for the B+ Insulator.  It will crack and or brake if over tightened.   

 

Prepared by: J. Daniel Martin / Martin’s Mobile Maintenance

AKA:  IBMobile

11/18/2017

 


View full Cummins article

  • Views 306
  • Created
  • Last Reply

Featured Replies