1985 Ski-Doo snowmobile Service Manual, Page 324Get this manual
Section 03 TRANSMISSION Sub-section 08 (GEAR BOX)
74, Drive axle holder
Hold drive axle with tool PIN 529 0051 00
36, Planet wheels and components
Loctite mounted shaft nut may require heat for disassemblyFor easier disassembly heat up to 150C (300F)To remove bearing from planet wheels, use press and suitable pusher (15.96 mm58" {6 max
21, Planet carrier bearing
Remove snap ring and use suitable pusher to press bearing out of carrier
25, Blocking wheel (reverse driving hub)
Loctite mounted screws may require heat for disassemblyFor easier disassembly heat up to 150C (300F)
CLEANING
Transmission casedriven pulley ass'y
Pull out of vehicle
27,60, Transmission covercase
Remove Loctite residue from cover and case mating surfaces
DISASSEMBL Y
Driven pulley
Remove snap ring, support assembly, driven pulley and key from countershaft
INSPECTION
Visually inspect the components for excessive wear and damage
ASSEMBLY
25,34, Blocking wheel (reverse driving hub)