SSANGYONG 1999 Musso Service Manual page 1136

12. Remove the main shaft rear bearing assembly from the
shaft.
13. Remove the 1st speed gear and bearing.
14. Remove the inner race.
15. Remove the tree-piece 1st speed blocking ring assembly
and remaining synchronizer spring.
16. Check and clean all removed parts and replace if
necessary.
MANUAL TRANSMISSION 5B-29