TM 5-3805-261-20
Section II. HYDRAULIC SYSTEM MAINTENANCE.
15-3.
HYDRAULIC SYSTEM MAINTENANCE PROCEDURES.
a.
The purpose of this section is to provide you with all needed instructions and additional information to help
you at the organizational support level to keep the hydraulic system and its components in good repair.
b.
This section is arranged by functional group code and provides a list of hydraulic system components to be
maintained and step-by-step maintenance procedures.
INDEX
Title
Paragraph
Page
Hydraulic System Maintenance Procedures
15-3
15-7
Circle Drive Motor Assembly
15-4
15-8
Blade Float Pilot Valve
15-5
15-11
Blade Float Check Valve
15-6
15-15
Hydraulic Pump Relief Valve Assembly and
Mounting
15-7
15-18
Circle Drive Check Valve
15-8
15-21
Leaning Wheel Check Valve
15-9
15-25
Sideshift Check and Relief Valves
15-10
15-29
Blade Tip Check and Relief Valve
15-11
15-33
Scarifier Check and Relief Valve
15-12
15-37
Centershift Check Valve
15-13
15-42
Right Blade Lift Check Valve
15-14
15-46
Articulation Check Valve
15-15
15-50
Left Blade Lift Check and Relief Valve
15-16
15-54
Hydraulic Control Valve Group
15-17
15-58
Hydraulic Control Linkages
15-18
15-70
Hydraulic Control Levers
15-19
15-73
Hydraulic Pump and Control Valve Lines
and Fittings
15-20
15-84
Oil Cooler to Relief Valve and Hydraulic
Tank Lines, Fittings and Hoses
15-21
15-92
Hydraulic Pump Assembly, Junction Block and
Steering Control Valve Lines
15-22
15-101
Blade Float Lines, Fittings and Hoses
15-23
15-111
Blade Lift Lines, Fittings and Hoses
15-24
15-116
Blade Tip Lines, Fittings and Hoses
15-25
15-126
Leaning Wheel Hoses and Fittings
15-26
15-136
Circle Drive Motor Hoses and Fittings
15-27
15-143
Centershift Lines, Fittings and Hoses
15-28
15-149
Articulation Lines, Fittings and Hoses
15-29
15-156
Sideshift Lines
15-30
15-163
Scarifier Lines, Fittings and Hoses
15-31
15-171
Hydraulic Oil Cooler
15-32
15-176
Hydraulic Tank Filters
15-33
15-180
15-7
