Lull 644B Parts Manual User Manual

Page 435

TABLE OF CONTENTS

Section 6 — Pump, Suction - Return and Valve Plate
Components

Control Manifold System

Pump, Suction - Return Hydraulic Circuit . . . . . . . . . . . . . . . . . . . . . . . . 6.1.1

Valve Plate Components Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.2.1

6-Port Circuit Selector Valve Assembly. . . . . . . . . . . . . . . . . . . . . . . . . .6.3.1

Frame Tilt Lockout Valve Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.4.1

Hydraulic (Boom) Control Valve Assembly, 2-Spool . . . . . . . . . . . . . . . 6.5.1

Relief Valve Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6.6.1

Hydraulic Control Valve Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.7.1

Valve Section Assembly - Transfer/Auxiliary/Frame Tilt . . . . . . . . . . . . . 6.8.1

Valve Section Assembly - Carriage Fork Tilt. . . . . . . . . . . . . . . . . . . . . . 6.9.1

Control Manifold Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.10.1

Pump Unloader Hydraulic Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6.11.1

Pump Unloader Valve Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.12.1

Mid Inlet System

Valve Plate Components Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.16.1

6-Port Circuit Selector Valve Assembly. . . . . . . . . . . . . . . . . . . . . . . . .6.17.1

Pump-Valve Sub Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.18.1

Hydraulic Control Valve Assembly - Mid Inlet . . . . . . . . . . . . . . . . . . . . 6.19.1

Valve Section Assembly - Boom . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.20.1

Valve Section Assembly - Transfer/ Auxiliary/ Frame Tilt/ Unloader. . 6.21.1

Valve Section Assembly - Carriage Fork Tilt. . . . . . . . . . . . . . . . . . . . 6.22.1

Relief Valve Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.23.1

Relief Valve Assembly - Mid Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.24.1

Common Components

Hydraulic Return Line Filter Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 6.27.1

Pressure Filter Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.28.1

This manual is related to the following products: