SECTION 3 - CHASSIS & TURNTABLE
3120740
– JLG Lift –
3-79
17.
A metal plug, with seal, plugs a machining hole in the
housing. It is not necessary to remove plug and replace
seal unless leakage occurs around plug. To remove plug,
insert 5 mm (0.187 in.) hex key through port opening
and push it out. The 009 plug is not interchangeable
with 007 and 008 plugs.
Inspection and Cleaning
Check all mating surfaces. Replace any parts with scratches or
burrs that could cause leakage or damage. Clean all metal
parts in clean solvent. Blow dry with air. Do not wipe parts
with cloth or paper towel because lint or other matter could
get into the hydraulic system and cause damage.
Check around key slot and chamfered area of shaft for burrs,
nicks or sharp edges that could damage seals during reassem-
bly. Remove nicks or burrs with hard smooth stone (such as an
Arkansas stone). Do not file or grind motor parts.
NOTE:
Lubricate all seals with petroleum jelly. Use new seals when
reassembling motor.
DO NOT STRETCH SEALS BEFORE INSTALLING THEM.
Cleanliness is extremely important in the successful applica-
tion of Loctite. Before Loctite can be applied, the parts should
be cleaned as follow:
NOTE:
Fully cured Loctite resists most solvents, oils, gasoline and
kerosene and is not affected by cleaning operations. It is
not necessary to remove cured Loctite that is securely
bonded in tapped holes; however, any loose particles of
cured Loctite should be removed.
a.
Wash the housing with solvent to remove oil, grease
and debris. Pay particular attention to four tapped
holes on flanged end.
b.
Blow dry with compressed air. Clean and dry tapped
holes.
c.
Wire brush screw threads to remove cured Loctite
and other debris. Discard any screws that have dam-
aged threads or rounded heads.
d.
Wash screws with non-petroleum base solvent.
Blow dry with compressed air.
Assembly
SHAFT END
1.
If you remove plug and seal, lubricate seal and install on
plug. Some plugs have two o-ring grooves but require
only one o-ring. Install o-ring in groove closest to end of
plug. Push plug into housing. Be careful not to damage
seal.
2.
Lubricate output shaft with hydraulic oil, then install
shaft in housing.
DO NOT PERMIT OIL TO GET INTO THE FOUR TAPPED HOLES.
3.
Install needle thrust bearing, then bearing race on shaft.
Pull shaft partially out of housing. Push all three parts in
housing together. The bearing race must rotate freely
when in position.
Go to
Discount-Equipment.com
to
order your
parts
