JLG 660SJ Service Manual - Manual (Page 195)

SECTION 4 - BOOM & PLATFORM
3121202 – JLG Lift – 4-23
washers. The end cap is adjusted for axial clearance and
locked in position by set screws or pins.
Required Tools
Upon assembly and disassembly of the actuator there are
basic tools required. The tools and their intended func-
tions are as follows:
1. Flashlight - helps examine timing marks, component
failure and overall condition.
2. Felt Marker - match mark the timing marks and out-
line troubled areas.
3. Allen wrench - removal of port plugs and set screws.
4. Box knife - removal of seals.
5. Seal tool - assembly and disassembly of seals and
wear guides.
6. Pry bar - removal of end cap and manual rotation of
shaft.
7. Rubber mallet- removal and installation of shaft and
piston sleeve assembly.
8. Nylon drift - installation of piston sleeve
9. End cap dowel pins - removal and installation of end
cap (sold with Helac seal kit).
The seal tool is merely a customized standard flat head
screwdriver. To make this tool you will need to heat the flat
end with a torch. Secure the heated end of the screwdriver
in a vice and physically bend the heated end to a slight
radius. Once the radius is achieved round off all sharp
edges of the heated end by using a grinder. There may be
some slight modifications for your own personal prefer-
ence.