SECTION 4 - BASIC HYDRAULIC INFORMATION & SCHEMATICS
4-26
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8.
Carefully thread the piston on the cylinder rod
hand tight, ensuring that the o-ring and back-up
rings are not damaged or dislodged.
9.
Thread the piston onto the rod until it abuts the
spacer end and install the tapered bushing.
NOTE:
When installing the tapered bushing, piston and
mating end of rod must be free of oil.
10.
Assemble the tapered bushing loosely into the
piston and insert JLG capscrews (not vendor cap-
screws) through the drilled holes in the bushing
and into the tapped holes in the piston.
11.
Tighten the capscrews evenly and progressively
in rotation to the specified torque value.
12.
After the screws have been torqued, tap the
tapered bushing with a hammer (16 to 24 oz.)
and brass shaft (approximately 3/4" in diameter)
as follows;
a.
Place the shaft against the cylinder rod and
in contact with the bushing in the spaces
between the capscrews.
b.
Tap each space once; this means the
tapered bushing is tapped 3 times as there
are 3 spaces between the capscrews.
13.
Retorque the capscrews evenly and progres-
sively in rotation to the specified torque value.
14.
Remove the cylinder rod from the holding fix-
ture.
15.
Place new guide locks and seals in the applicable
outside diameter grooves of the cylinder piston.
16.
Position the cylinder barrel in a suitable holding
fixture.
NOTICE
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 BAR-
REL SURFACES.
17.
With the barrel clamped securely, and while ade-
quately supporting the rod, insert the piston end
into the barrel cylinder. Ensure that the piston
loading o-ring and seal ring are not damaged or
dislodged.
18.
Continue pushing the rod into the barrel until
the cylinder head gland can be inserted into the
barrel cylinder.
19.
Secure the cylinder head gland using the washer
ring and socket head bolts.
Head Gland
Piston Asssembly
Barrel Asssembly
Cylinder Rod
Figure 4-26. Rod Assembly Installation
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