Tapered Bushing Installation - JLG 26MRT Service & Maintenance

10. Install the bolts into the bushing using Loctite #242.
Refer to Table 2-1, Cylinder Component Torque
Specifications for proper bolt torque values.
Figure 2-10. Tapered Bushing Installation
11. Remove the cylinder rod from the holding fixture.
12. Place new guidelocks and hydrolock seals in the
applicable outside diameter grooves of both the pis-
ton and the cylinder head. Refer to Piston Seal Kit
Installation illustration.
13. 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.
14. With the barrel clamped securely, and while ade-
quately supporting the rod, insert the piston end into
the cylinder barrel. Ensure that the piston loading o-
ring and seal ring are not damaged or dislodged.
15. Continue pushing the rod into the barrel until the cyl-
inder head gland can be inserted into the cylinder
barrel.
3120791
16. Secure the cylinder head gland using the washer
ring and socket head bolts.
Figure 2-11. Rod Assembly Installation
17. 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.
18. If applicable, install the cartridge-type holding valve
and fittings in the port block using new o-rings as
19. applicable.
Table 2-1. Cylinder Component Torque Specifications
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 Sizzor –
SECTION 2 - PROCEDURES
Componente
Torque Value
30 - 35 ft lb
45 - 50 ft lb
150 - 153 ft lb
50 - 55 ft lb
75 - 80 ft lb
100 - 110 ft lb
Torque Value
(w/Loctite)
80 ft lb
(108 Nm)
9 ft lb
(12 Nm)
41 - 48 Nm
61 - 68 Nm
204 - 207 Nm
68 - 75 Nm
102 - 109 Nm
136 - 149 Nm
2-9