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DISASSEMBLY AND ASSEMBLY
PROPORTIONAL CONTROL SOLENOID VALVE
2
4
PROPORTIONAL CONTROL SOLENOID VALVE
4K4AQ00
Disassembly and Assembly
The numbers in parentheses () listed after the names of
parts in this document match the numbers used in the
construction diagrams and parts lists.
General Precautions
• Perform disassembly and assembly work in a clean
place. Provide clean containers to hold parts during
disassembly.
• Clean around the ports before disassembly. Remove
paint around connectors with a wire brush.
• Clean the disassembled parts with wash oil.
• Put alignment marks on all parts to reassemble them in
the same positions.
• After each disassembly, replace all seals and apply a
thin layer of grease to them.
• Check each part for abnormal wear or seizing. Re-
move any burrs with sandpaper.
• Do not move adjusting screws, unless absolutely nec-
essary.
Disassembly
1. Remove the bolts (2) and remove the proportional
control solenoid (1).
Bolt: 6.9 ± 1 N·m
Assembly
For assembly, reverse the disassembly procedure.
Inspection and adjustment
Checking the parts
Part
Criteria
Action
Coil assembly
• The solenoid is burned-out, short-circuited, or a wire is broken.
• Wiring short-circuit or a wire is broken
• Replace
• Replace
Body
• Scratches, rust, or corrosion at the parts in sliding contact with the
spool.
• Scratches, rust, or corrosion of the part of the seal in contact with the
O-ring.
• Other damage considered to impair the normal functions
• Replace
• Replace
• Replace
Spool
• Scratches on the outer circumference that easily catch a fingernail
• Movement is not smooth
• Replace
• Repair or replace
Spring
• Rust, corrosion, deformation, breakage, or other notable damage
• Replace
O-ring
—
• Replace
Содержание TB215R
Страница 1: ...CC8E005 WETB215R_A XI Seral No 215000003...
Страница 3: ...SAFETY 1...
Страница 13: ...SERVICE DATA 2...
Страница 16: ...SERVICE DATA DIMENSIONAL DRAWING 3 2 DIMENSIONAL DRAWING 2A0AX001 Operating range 2A0AX02...
Страница 45: ...SERVICE DATA HYDRAULIC CIRCUIT DIAGRAM 1 2 HYDRAULIC CIRCUIT DIAGRAM 2F0AX001 HYDRAULIC CIRCUIT DIAGRAM...
Страница 51: ...SERVICE DATA ELECTRICAL CIRCUIT DIAGRAM 2 2 ELECTRICAL CIRCUIT DIAGRAM 2G0AX00 Electrical Schematic Diagram...
Страница 52: ...SERVICE DATA WIRE HARNESS DIAGRAM 1 2 WIRE HARNESS DIAGRAM 2H0AX00 WIRE HARNESS DIAGRAM Wiring diagram...
Страница 53: ...SERVICE DATA WIRE HARNESS DIAGRAM 2 2 WIRE HARNESS DIAGRAM 2H0AX00 Body harness 03342 68000...
Страница 54: ...SERVICE DATA WIRE HARNESS DIAGRAM 3 2 WIRE HARNESS DIAGRAM 2H0AX00...
Страница 55: ...SERVICE DATA WIRE HARNESS DIAGRAM 4 2 WIRE HARNESS DIAGRAM 2H0AX00...
Страница 56: ...SERVICE DATA WIRE HARNESS DIAGRAM 5 2 WIRE HARNESS DIAGRAM 2H0AX00...
Страница 57: ...SERVICE DATA WIRE HARNESS DIAGRAM 6 2 WIRE HARNESS DIAGRAM 2H0AX00...
Страница 58: ...FUNCTION 3...
Страница 88: ...DISASSEMBLY AND ASSEMBLY 4...
Страница 90: ...DISASSEMBLY AND ASSEMBLY SERVICE STANDARDS 2 4 SERVICE STANDARDS 4A0AX00 Clearance for pin and bushing...
Страница 118: ...DISASSEMBLY AND ASSEMBLY UPPER FRAME 6 4 UPPER FRAME 4E0AX00 CANOPY Construction 1 Canopy 2 Roof...
Страница 120: ...DISASSEMBLY AND ASSEMBLY OPERATING DEVICE 1 4 OPERATING DEVICE 4F0AX00 OPERATING DEVICE Control levers Construction...
Страница 125: ...DISASSEMBLY AND ASSEMBLY OPERATING DEVICE 6 4 OPERATING DEVICE 4F0AX00 Hydraulic piping...
Страница 127: ...DISASSEMBLY AND ASSEMBLY ATTACHMENTS 1 4 ATTACHMENTS 4G0AX001 ATTACHMENTS Hoe attachment Construction...
Страница 130: ...DISASSEMBLY AND ASSEMBLY ATTACHMENTS 4 4 ATTACHMENTS 4G0AX001 34 Blade 35 Blade cylinder 36 Pin 37 Plate R 38 Plate L...
Страница 230: ......
Страница 232: ...TROUBLESHOOTING 5...
Страница 287: ...Other 6...