JLG 330CRT Service Maintenance Manual page 27

Figure 2-14. Poly-Pak Piston Seal Installlation
10. Position the cylinder barrel in a suitable holding fix-
ture.
IMPORT ANT
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.
11. 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.
12. Continue pushing the rod into the barrel until the cyl-
inder head gland can be inserted into the barrel cyl-
inder.
13. Secure the cylinder head gland using the washer
ring and socket head bolts.
Figure 2-15. Rod Assembly Installation
14. After the cylinder has been reassembled, the rod
should be pushed all the way in (fully retracted) prior
to the reinstallation of any holding valve or valves.
3121804
15. If applicable, install the cartridge-type holding valve
and fittings in the rod port block, using new o-rings
as applicable. (See Table 2-1, Cylinder Component
Torque).
Table 2-1. Cylinder Component Torque
Component
Tapered Bushing Retaining Screws - Lift Cylinder
Head Retaining Screws - Lift Cylinder
Table 2-2. Holding Valve Torque Specifications
Description
Sun - 7/8 hex M20 x 1.5 thds
Sun - 1-1/8 hex 1 - 14 UNS thds
Sun - 1-1/4 hex M36 x 2 thds
Racine - 1-1/8 hex 1-1/16 - 12 thds
Racine - 1-3/8 hex 1-3/16 - 12 thds
Racine - 1-7/8 hex 1-5/8 - 12 thds
– JLG Lift –
SECTION 2 - PROCEDURES
Torque Value
(w/Loctite)
80 ft lb
(108 Nm)
9 ft lb
(12 Nm)
Torque Value
30 - 35 ft lb 41 - 48 Nm
45 - 50 ft lb 61 - 68 Nm
150 - 153 ft lb 204 - 207 Nm
50 - 55 ft lb 68 - 75 Nm
75 - 80 ft lb 102 - 109 Nm
100 - 110 ft lb 136 - 149 Nm
2-13