JLG 660SJ Service Manual - Manual (Page 230)

SECTION 5 - HYDRAULICS
5-40 – JLG Lift – 3121298
10. Remove rear bearing block from drive and idler shafts.
11. Remove idler shaft from bearing block.
12. Remove drive shaft from mounting flange.
NOTE: Shaft seal will be replaced.
13. Remove front bearing block.
14. Turn mounting flange over, with shaft seal up. Remove
retaining ring with snap ring pliers.
15. Remove oil seal from mounting flange. Do not mar or
scratch seal bore.
16. Remove dowel pins from gear housing. Do not lose pins.
17. Remove and discard seals from both bearing blocks.