SECTION 5 - HYDRAULICS
5-6
– JLG Lift –
3120746
5. Using suitable protection, clamp the cylinder rod in
a vise or similar holding fixture as close to piston as
possible.
6. Carefully thread the piston on the cylinder rod hand
tight, ensuring that the o-ring and back-up rings are
not damaged or dislodged.
7. Thread piston onto rod until it abuts the spacer end
and install the tapered bushing.
NOTE:
When installing the tapered bushing, piston and mat-
ing end of rod must be free of oil.
WHEN REBUILDING THE MASTER, SLAVE, LIFT, OR TELESCOPE
CYLINDERS, APPLY LOCTITE #242 TO TAPERED BUSHING
BOLTS, THEN TIGHTEN SECURELY. (TABLE 5-1, CYLINDER HEAD
AND TAPERED BUSHING TORQUE SPECIFICATIONS).
8. Install the bolts in tapered bushing using loctite
#242. (See Table 5-1, Cylinder Head and Tapered
Bushing Torque Specifications.)
9. Remove the cylinder rod from the holding fixture.
10. Place new guide locks and seals in the applicable
outside diameter grooves of the cylinder piston.
(See Figure 5-10., Piston Seal Kit Installation).
11. Position the cylinder barrel in a suitable holding fix-
ture.
EXTREME CARE SHOULD BE TAKEN WHEN INSTALLING THE
CYLINDER ROD, HEAD, AND PISTON. AVOID PULLING THE ROD
OFF-CENTER, WHICH COULD CAUSE DAMAGE TO THE PISTON
AND CYLINDER BARREL SURFACES.
12. With barrel clamped securely, and while adequately
supporting the rod, insert the piston end into the
barrel cylinder. Ensure that the piston loading o-ring
and seal ring are not damaged or dislodged.
13. Continue pushing the rod into the barrel until the cyl-
inder head gland can be inserted into the barrel cyl-
inder.
14. Secure the cylinder head gland using the washer
ring and socket head bolts. (Table 5-1, Cylinder
Figure 5-10. Piston Seal Kit Installation
Figure 5-11. Tapered Bushing Installation
Summary of Contents for 601S
Page 1: ...Service and Maintenance Manual Model 601S P N 3120746 November 22 2016 ...
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Page 26: ...SECTION 1 SPECIFICATIONS 1 10 JLG Lift 3120746 Figure 1 3 Torque Chart ...
Page 36: ...SECTION 2 GENERAL 2 10 JLG Lift 3120746 Figure 2 7 Connector Installation ...
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Page 49: ...SECTION 3 CHASSIS TURNTABLE 3120746 JLG Lift 3 9 Figure 3 1 Torque Hub Drive Fairfield ...
Page 51: ...SECTION 3 CHASSIS TURNTABLE 3120746 JLG Lift 3 11 Figure 3 2 Torque Hub Drive Auburn Gear ...
Page 53: ...SECTION 3 CHASSIS TURNTABLE 3120746 JLG Lift 3 13 Figure 3 3 Drive Brake Assembly Ausco ...
Page 91: ...SECTION 3 CHASSIS TURNTABLE 3120746 JLG Lift 3 51 Figure 3 40 Swing Brake Assembly Ausco ...
Page 99: ...SECTION 3 CHASSIS TURNTABLE 3120746 JLG Lift 3 59 ...
Page 119: ...SECTION 3 CHASSIS TURNTABLE 3120746 JLG Lift 3 79 Figure 3 46 EFI Component Location ...
Page 122: ...SECTION 3 CHASSIS TURNTABLE 3 82 JLG Lift 3120746 Figure 3 47 ECM EPM Identification ECM EPM ...
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Page 132: ...SECTION 4 BOOM PLATFORM 4 4 JLG Lift 3120746 Figure 4 5 Boom Assembly Cutaway Sheet 1 of 2 ...
Page 133: ...SECTION 4 BOOM PLATFORM 3120746 JLG Lift 4 5 Figure 4 6 Boom Assembly Cutaway Sheet 2 of 2 ...
Page 145: ...SECTION 4 BOOM PLATFORM 3120746 JLG Lift 4 17 Figure 4 22 Rotator Assembly Helac ...
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Page 176: ...SECTION 6 JLG CONTROL SYSTEM ADE 6 2 JLG Lift 3120746 Figure 6 1 EPBCS Block Diagram ...
Page 238: ...SECTION 7 SCHEMATICS 7 16 JLG Lift 3120746 Figure 7 15 Hydraulic Schematic Sheet 1 of 4 ...
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