JLG 1850SJ, Service And Maintenance Manual, Page: 410 / 712

SECTION 5 - BASIC HYDRAULIC INFORMATION & HYDRAULIC SCHEMATICS
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15. Hold the control in a horizontal position. Install the
spherical end of the LS spool (C112) into the LS bore (see
illustration). Using a new O-ring, install the LS plug
(C104), torque at 10.8 to 13.5 Nm [8 to 10 lbft]. Place the
2 LS springs (C114, C115) onto the LS spring guide
(C113) and install into the LS bore. Place a new O-ring
(C116) and back-up rings (C117) onto the LS adjustment
screw (C118). Install the LS plug assembly so that it sits
one turn below the surface of the control housing.
Install and tighten set screw (C102) at 7.5 to 10.8 Nm
[5.5.to 8.0 lbft]. Also, install the plugs (C105, C106) with
new O-rings. Torque the plugs at 10.8 to 13.5 Nm [8 to
10 lbft].
NOTE: PC and LS spools need to be adjusted to proper setting
according to tag nomenclature.
16. Using petroleum jelly to retain them, install 4 new seal
rings (C200) in the recesses on the control housing.
Install the control assembly onto the endcap using the 4
screws (C300). Torque at 5.4 to 7.5 Nm [4.0 to 5.5 lbft]
using a criss cross pattern and retorque the first screw to
ensure proper torque retention.
C112
C104
C103
C105
C105A
C106
C102
C113
C115
C114
C117
C116
C117
C118
C133
C135
C134
C138
C136
C132
C103A
C106A
C104A
C200
C300
5.4 to 7.5 N• m
[4 to 5.5 lbf•f t]
4 mm