JLG 450A_AJ Series II Service Manual - Manual (Page 297)

SECTION 5 - HYDRAULICS
3121290 – JLG Lift – 5-57
5. Place mounting flange, with shaft seal side down, on a
clean flat surface.
6. Apply a light coating of petroleum jelly to exposed face
of front bearing block.
7. Insert drive end of drive shaft through bearing block
with seal side down and open side of E-seal pointing to
intake side of pump.
8. Install seal sleeve over drive shaft. Carefully slide drive
shaft through shaft seal. Remove seal sleeve from shaft.
9. Install idler gear shaft in remaining position in bearing
block. Apply a light coat of clean oil to face of drive and
idler gears.
10. Place rear bearing block over drive and idler gear shafts
with seal side up and open end of E-seal
facing intake side of pump.
11. Install two dowel pins in mounting flange holes or two
long dowel pins through gear housing if pump is a mul-
tiple section pump.
12. Apply a light coating of petroleum jelly in grooves on
both sides of gear housing. Coat new O-rings and install
in grooves.