Assembly - JLG 1200SJP Service Maintenance Manual

SECTION 5 - HYDRAULICS

Assembly

NOTE: Prior to cylinder assembly, ensure that the proper cylinder
seal kit is used. See your JLG Parts Manual.
Apply a light film of hydraulic oil to all components prior to
assembly.
1. A special tool is used to install a new rod seal into the
applicable cylinder head gland groove.
Figure 5-14. Rod Seal Installation
WHEN INSTALLING 'POLY-PAK' PISTON SEALS, ENSURE SEALS ARE INSTALLED
PROPERLY. REFER TO WIPER SEAL INSTALLATION FOR CORRECT SEAL ORIEN-
TATION. IMPROPER SEAL INSTALLATION COULD RESULT IN CYLINDER LEAK-
AGE AND IMPROPER CYLINDER OPERATION.
5-14
2. Use a soft mallet to tap a new wiper seal into the appli-
cable cylinder head gland groove. Install a new wear
ring into the applicable cylinder head gland groove.
Figure 5-15. Poly-Pak Piston Seal Installation
Figure 5-16. Wiper Seal Installation
– JLG Lift – 3121142