SECTION 5 - BASIC HYDRAULICS INFORMATION & SCHEMATICS
5-16
31215031
Assembly
IMPROPER SEAL INSTALLATION CAN CAUSE CYLINDER LEAKS AND IMPROPER
CYLINDER OPERATION.
NOTE:
Use proper cylinder seal kit for cylinder assembly. See your
JLG Parts Manual.
Apply a light film of hydraulic oil to all components before
assembly.
1.
Support rod in holding fixture.
2.
Install wear ring (15), rod seal (18), and wiper seal (19) in
cylinder head (3).
3.
Install new backup ring (16) and O-ring (17) in outside
diameter groove of cylinder head (3).
Figure 5-17. Head Seal Kit Installation
Figure 5-18. Cylinder Head Seals
4.
Carefully install cylinder head assembly on rod. Do not
damage or dislodge wiper and rod seals. Push head
along rod to rod end.
5.
Carefully slide spacer (6) on rod.
6.
Install O-ring (14) and backup ring (13) in piston (4).
7.
Install two seals (12) and lock rings (11) in outside diam-
eter piston grooves.
Figure 5-19. Piston Seal Kit Installation
Figure 5-20. Piston Seals
8.
Using suitable protection, clamp cylinder rod in a vise or
similar holding fixture as close to piston as possible.
9.
Carefully thread piston on cylinder rod hand tight. Do
not damaged or dislodge O-ring and backup rings.
19
3
15
18
16
15
19
18
17
16
3
4
12
11
11
12
14
13
11
11
12
12
13
14
4
Tapered
Bushing
End
Go
to
Discount-Equipment.com
to
order
your
parts
