JLG 450A Service And Maintenance Manual page 36

Inspect Parts For Wear
1. Clean and dry all parts thoroughly prior to inspec-
tion. 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 key-
way. No marks or grooves on shaft in seal area,
some discoloration 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.
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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 unusable.
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 scor-
ing.
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.
– JLG Lift –
SECTION 2 - PROCEDURES
2-19