TM 5-3805-261-34
CHAPTER 10
HYDRAULIC SYSTEM MAINTENANCE
CHAPTER OVERVIEW
The purpose of this chapter is to help the technician efficiently troubleshoot and repair malfunctioning equipment and to
perform authorized direct support level maintenance procedures on the 130G Grader hydraulic system.
INDEX
Section
Title
Paragraph
Page
I
HYDRAULIC SYSTEM MAINTENANCE
Hydraulic System Maintenance Procedures
10-1
10-2
Hydraulic Pump Drive
10-2
10-3
Hydraulic Pump Assembly and Mounting
10-3
10-8
Pump Assembly
10-4
10-15
Circle Drive Motor
10-5
10-38
Blade Float Pilot Valve
10-6
10-43
Blade Float Check Valve
10-7
10-45
Right Blade Lift, Articulation
and Centershift Check Valve
10-8
10-49
Left Blade Lift and Scarifier
Check and Relief Valves
10-9
10-53
Hydraulic Control Valves
10-10
10-57
Hydraulic Pump Relief Valve
10-11
10-68
Circle Drive and Leaning Wheel
Check Valves
10-12
10-72
Power Blade and Blade Tip Check and
Relief Valve
10-13
10-75
Scarifier Check and Relief Valve
10-14
10-80
Centershift Cylinder
10-15
10-85
Blade Tip Cylinder
10-16
10-91
Blade Lift Cylinder
10-17
10-97
Articulation Cylinder
10-18
10-103
Hydraulic Side Shift Cylinder
10-19
10-109
Scarifier Cylinder
10-20
10-116
Hydraulic Tank and Mounting
10-21
10-121
Hydraulic Pump and Control Valve
10-22
10-128
Lines and Fittings
Oil Cooler to Relief Valve and
10-23
10-136
Hydraulic Tank Lines and Fittings
10-1
