JLG 510AJ Service Manual - Manual (Page 260)

SECTION 5 - HYDRAULICS AND HYDRAULIC SCHEMATICS
5-40 – JLG Lift – 3121181
Inspect Parts For Wear
1. Clean and dry all parts thoroughly prior to inspection. It
is not necessary to inspect the seals as they will be
placed as new items.
2. Check drive shaft spine for twisted or broken teeth,
check keyed drive shaft for broken or chipped keyway.
No marks or grooves on shaft in seal area, some discolor-
ation of shaft is allowable.
3. Inspect both the drive gear shaft and idler gear shafts at
the bearing points and seal area for rough surfaces and
excessive wear.
4. Inspect gear face for scoring or excessive wear. If the
face edge of gear teeth are sharp, they will mill into the
bearing blocks. If wear has occurred, the parts are unus-
able.
5. Inspect bearing blocks for excessive wear or scoring on
the surfaces which are in contact with the gears. Also
inspect the bearings for excessive wear or scoring.
6. Inspect the area inside the gear housing. It is normal for
the surface inside the gear housing to show a clean
"wipe" on the inside surface on the intake side. There
should not be excessive wear or deep scratches and
gouges.