SECTION 5 - BASIC HYDRAULIC INFORMATION & SCHEMATICS
5-122
3121714
8.
Using suitable protection, clamp the cylinder rod in a
vise or similar holding fixture as close to the piston as
possible.
9.
Loosen and remove nut which attaches the piston to the
rod.
10.
Screw the piston counterclockwise, by hand and remove
the piston from cylinder rod.
11.
Remove and discard the piston o-rings, cap seals and
wear rings.
12.
Remove piston spacer from the rod.
13.
Remove the rod from the holding fixture. Remove the
cylinder head gland. Discard the o-rings, backup rings,
wear rings, rod seals, and wiper seals.
CLEANING AND INSPECTION
1.
Clean all parts thoroughly in an approved cleaning sol-
vent.
2.
Inspect the cylinder rod for scoring, tapering, ovality, or
other damage. If necessary, dress rod with Scotch Brite
or equivalent. Replace rod if necessary.
3.
Inspect threaded portion of rod for excessive damage.
Dress threads as necessary.
4.
Inspect inner surface of cylinder barrel tube for scoring
or other damage. Check inside diameter for tapering or
ovality. Replace if necessary.
5.
Inspect piston surface for damage and scoring and for
distortion. Dress piston surface or replace piston as nec-
essary.
6.
Inspect threaded portion of piston for damage. Dress
threads as necessary.
7.
Inspect seal and o-ring grooves in piston for burrs and
sharp edges. Dress applicable surfaces as necessary.
8.
Inspect cylinder head inside diameter for scoring or
other damage and for ovality and tapering. Replace as
necessary.
9.
Inspect seal and o-ring grooves in head for burrs and
sharp edges. Dress applicable surfaces as necessary.
10.
Inspect cylinder head outside diameter for scoring or
other damage and ovality and tapering. Replace as nec-
essary.
11.
If applicable, inspect rod and barrel bearings for signs of
correct excessive wear or damage. Replace as necessary.
a.
Thoroughly clean hole, (steel bushing) of burrs, dirt
etc. to facilitate bearing installation.
b.
Inspect steel bushing for wear or other damage. If
steel bushing is worn or damaged, rod/barrel must
be replaced.
c.
Lubricate inside of steel bushing prior to bearing
installation.
d.
Using an arbor of the correct size, carefully press the
bearing into steel bushing.
Summary of Contents for E450A
Page 2: ......
Page 22: ...SECTION 1 SPECIFICATIONS 1 4 3121714 Figure 1 2 Maintenance Lubrication Diagram...
Page 51: ...SECTION 3 CHASSIS TURNTABLE 3121714 3 11 1001116232 A Figure 3 9 Drive Limit Switch...
Page 64: ...SECTION 3 CHASSIS TURNTABLE 3 24 3121714 1 0 Figure 3 18 Drive Hub Sheet 1 of 2...
Page 76: ...SECTION 3 CHASSIS TURNTABLE 3 36 3121714 Figure 3 27 Swing Components...
Page 96: ...SECTION 3 CHASSIS TURNTABLE 3 56 3121714 GENERATOR Figure 3 30 On Board Generator...
Page 116: ...SECTION 3 CHASSIS TURNTABLE 3 76 3121714 NOTES...
Page 343: ...SECTION 6 JLG CONTROL SYSTEM 3121714 6 27 CONNECTOR Figure 6 10 Power Module LH 1001192212 D...
Page 344: ...SECTION 6 JLG CONTROL SYSTEM 6 28 3121714 Figure 6 11 Power Module RH CONNECTOR 1001178339 E...
Page 479: ......
