TM 9-2320-279-20-3
CHAPTER 19
HYDRAULIC SYSTEMS MAINTENANCE
Contents
Para
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19-1
Hydraulic Hand Pump Removal/Installation (M983) . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
19-2
Self-Recovery Winch Control Lever Removal/Installation . . . . . . . . . . . . . . . . 19-3
Hydraulic Relief Valve Removal/Repair/Installation . . . . . . . . . . . . . . . . . . . . 19-4
Flow Priority Valve Removal/Installation (M978, M984)
19-5
Winch Control Valve Cable and Brackets Removal/Installation . . . . . . . . . . . . . . . . . . . . 19-6
Self-Recovery Winch Control Valve Removal/Installation . . . . . . . . . . . . . . . . . . . . . . .
19-7
Control Valve Bracket Removal/Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19-8
Winch and Auxiliary Hydraulic Relief Valves Removal/Installation (M983, M984) . . . 19-9
Winch and Auxiliary Hydraulic Relief Valve Bracket Removal/Installation
(M983,M984) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Heavy-Duty Selector Valve and Mounting Bracket Removal/Installation (M984) . . . .
Primary Pump Hydraulic Motor Control Valve, Bracket, and Cable Bracket
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal/Installation (M978)
19-10
19-11
19-12
Retriever Control Valve Levers Removal/Installation (M984E1) . . . . . . . . . . . . . . . . . . . .
19-12.1
Retriever Control Assembly Removal/Installation (M984E1) . . . . . . . . . . . . . . . . . . . . . . . .
19-12.2
Selector Valve Removal/Installation
19-13
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selector Valve Removal/Installation (M983) . . . . . . . . . . . . . . . . . . . . . . . . .
19-14
Primary Pump Hydraulic Motor Control Cable and Mount
Removal/Installation/Adjustment (M978)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19-15
Hydraulic Lines and Brackets Removal/Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19-16
Crane Hydraulic Fluid Filter Assembly and Mounting Bracket Removal/Repair/
Installation (M977, M984E1, M985)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19-17
Section I. INTRODUCTION
Page
19-1
19-2
19-5
19-7
19-10.1
19-12
19-14
19-19
19-20
19-25
19-26
19-30
19-34
19-36
19-39
19-41
19-46
19-49
19-74
19-1.
GENERAL.
This chapter contains maintenance instructions for removing, replacing, repairing,
and installing hydraulic system components authorized by the Maintenance Allocation Chart (MAC) at the
organizational maintenance level.
Change 3
19-1
