SECTION 5 - BASIC HYDRAULIC INFORMATION & SCHEMATICS
3121200
5-25
13.
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 inner side of the steel bushing prior to
bearing installation.
d.
Press composite bushing into barrel or rod bushing
with correct size arbor.
NOTE:
Lubrication is not required with nickel plated pins and
bearings. Install pin in composite bushing dry.
Figure 5-36. Composite Bushing Installation
14.
If applicable, inspect port block fittings and holding
valve. Replace as necessary.
15.
Inspect oil ports for blockage or presence of dirt or other
foreign material. Repair as necessary.
16.
If applicable, inspect piston rings for cracks or other
damage. Replace as necessary.
ASSEMBLY
INCORRECT SEAL INSTALLATION CAN CAUSE CYLINDER LEAKS AND IMPROPER
C YLINDER OPERATION. ENSURE ALL PISTON SEALS ARE CORREC TLY
INSTALLED. REFER TO CROSS SECTION ILLUSTRATIONS FOR CORRECT SEAL
ORIENTATION.
NOTE:
Use proper cylinder seal kit for cylinder assembly. See your
JLG Parts Manual.
NOTE:
Apply a light film of hydraulic oil to all components before
assembly.
1.
Install rod seal (13) and wiper seal (14) inside the cylin-
der head.
2.
Install o-rings (10 & 12) and seal (11) on cylinder head.
3.
Slide cylinder head assembly onto rod (2). Do not dis-
lodge or damage seals.
4.
Support rod in holding fixture.
5.
Carefully slide the spacer (15) onto the rod.
6.
Insert spring (5) onto the rod.
7.
Install o-ring (9) inside piston (3).
MAE29340
10
12
4
13
14
11
Figure 5-37. Cylinder Head Assembly
Summary of Contents for T500J
Page 1: ...Service and Maintenance Manual Model T500J PN 3121200 July 25 2018 Rev I AS NZS...
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Page 16: ...xii 3121200 LIST OF TABLES TABLE NO TITLE PAGE NO This page left blank intentionally...
Page 36: ...SECTION 2 GENERAL 2 8 3121200 NOTES...
Page 143: ...SECTION 3 CHASSIS TURNTABLE 3121200 3 107 Figure 3 45 Battery Charger Schematic...
Page 234: ...SECTION 5 BASIC HYDRAULIC INFORMATION SCHEMATICS 5 60 3121200 NOTES...
Page 246: ...SECTION 6 JLG CONTROL SYSTEM 6 12 3121200 Figure 6 5 System Test Flow Chart Platform Tests...
Page 304: ...SECTION 7 BASIC ELECTRICAL INFORMATION SCHEMATICS 7 32 3121200 NOTES...
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