JLG 1850SJ Service And Maintenance Manual page 410

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Table of Contents

SECTION 5 - BASIC HYDRAULIC INFORMATION & HYDRAULIC SCHEMATICS

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

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.

5.4 to 7.5 N• m

[4 to 5.5 lbf•f t]

Troubleshooting