Extension Case Disassembly and Reassembly: Disassembly

Remove rear extension case and damper from front extension case.
Disassemble rear extension case (2) as follows, if necessary.
1. Remove oil seal (3) from rear extension case using flat end rod or the like.
2. Remove needle bearing (1) using special tools.
  Special Tool
  
  (A): 09913-76010
  
  (B): 09944-66020
  
  Fig 1: Identifying Rear Extension Case, Needle Bearing And Oil Seal
  Courtesy of SUZUKI OF AMERICA CORP.
Remove intermediate shaft from front extension case.
Remove oil seal from front extension case using flat end rod or the like, if necessary.
Remove intermediate front bearing and/or intermediate rear bearing using hydraulic press (1) and bearing puller (2), if necessary.

Fig 2: Installing Intermediate Front Bearing And/Or Intermediate Rear Bearing
Courtesy of SUZUKI OF AMERICA CORP.