JLG 3246E2 Service Manual - Manual (Page 24)

SECTION 2 - PROCEDURES
2-12 – JLG Sizzor – 3120855
8. Inspect seal and o-ring grooves in guide for burrs
and sharp edges. Dress applicable surfaces as nec-
essary.
9. Inspect cylinder guide outside diameter for scoring
or other damage and ovality and tapering. Replace
as necessary.
10. Inspect the oil ports for blockage or the presence of
dirt or other foreign material. Repair as necessary.
Assembly
NOTE: Prior to cylinder assembly, ensure that the proper
cylinder seal kit is used. Refer to the Illustrated Parts
Manual.
Apply a light film of hydraulic oil to all components
prior to assembly.
1. Using suitable protection, clamp the cylinder rod
section one in a vise or similar holding fixture.
2. Place a new wiper ring, rod seal, o-ring, and back-up
ring into the cylinder rod guide grooves.
3. Carefully install the cylinder rod guide on rod section
one, ensuring that the wiper ring and rod seal are
not damaged or dislodged. Push the guide onto the
rod section.
4. Place a new piston ring on the piston and a new o-
ring on the threaded end of cylinder rod section two.
5. Carefully place the piston on the threaded end of
cylinder rod section two, ensuring that the o-ring is
not damaged or dislodged. Push the piston onto the
rod as far as it will go.
6. Attach cylinder rod section one to the threaded end
of cylinder rod section two and assemble.
7. Remove the cylinder rod assembly from the holding
fixture.
8. Position the cylinder barrel in a suitable holding fix-
ture.
EXTREME CARE SHOULD BE TAKEN WHEN INSTALLING THE
CYLINDER ROD, CYLINDER ROD GUIDE, AND PISTON. AVOID
PULLING THE ROD OFF-CENTER, WHICH COULD CAUSE DAM-
AGE TO THE PISTON AND CYLINDER BARREL SURFACES.
9. With the barrel clamped securely, and while ade-
quately supporting the cylinder rod assembly, insert
the piston end of the rod assembly into the cylinder
barrel. Ensure that the piston ring and o-ring are not
damaged or dislodged.
10. Continue pushing the rod into the barrel until the cyl-
inder rod guide can be inserted into the end of the
cylinder barrel.
11. Coat the threads of the cylinder rod guide with Loc-
tite #271 then secure the cylinder rod guide to the
cylinder barrel using a suitable spanner wrench.
12. On the remaining cylinder rod guide, place a new
wiper ring, rod seal, o-ring, and back-up ring into the
cylinder rod guide grooves.
13. Carefully install the cylinder rod guide onto rod sec-
tion two and slide the guide into the end of the cylin-
der barrel.
14. Coat the threads of the cylinder rod guide with Loc-
tite #271 then secure the cylinder rod guide to the
cylinder barrel using a suitable spanner wrench.
15. Reconnect the hydraulic hoses to the applicable cyl-
inder ports.
2.13 TILT SWITCH ADJUSTMENT
NOTE: The machine may be equipped with a tilt switch (sen-
sor), factory set to activate when the machine is ele-
vated and out of level in any direction at 1.5° on the
1932E2/2032E2 and 2° on the 2632E2/2646E2/
3246E2. When this occurs the drive function is cut
out. Consult factory for tilt sensor adjustment. The
only field adjustment necessary is leveling the switch
on the spring loaded studs. There are two methods
of adjustment, a manual adjustment and an adjust-
ment using a voltmeter.
PERFORM TILT ALARM SWITCH LEVELING PROCEDURE A MINI-
MUM OF EVERY SIX MONTHS TO ENSURE PROPER OPERATION
AND ADJUSTMENT OF SWITCH.
Manual Adjustment
1. Park the machine on a flat, level surface and ensure
the machine is level.
NOTE: Ensure switch mounting bracket is level and securely
attached.
2. Level the base of the indicator by tightening the
three flange nuts. Tighten each nut through approxi-
mately one half of its spring travel. DO NOT ADJUST
THE (X) NUT DURING THE REMAINDER OF THE
PROCEDURE.
3. With the electrical connections complete, slowly
tighten one of the (Y) nuts until the circuit is closed
(the light on the Platform Control Console illumi-
nates, the tilt alarm sounds).