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Steering SP000224
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SP000224
Steering
Edition 1
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SP000224
MEMO
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Table of Contents
Steering
Safety Precautions ................................................ 5
Applicable Models ................................................. 5
General Description .............................................. 6
Power Steering System .................................................... 6
EHPS Valve ...................................................................... 8
Parts List ......................................................................... 10
Steering Spool at Neutral Position ................................. 12
Steering Spool Operated ................................................ 14
Pressure Reducing Valves ............................................. 16
Steering Unit ................................................................... 18
Function .......................................................................... 18
Function .............................................................. 20
Picture of Components in the EHPS .............................. 20
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SAFETY PRECAUTIONS
CAUTION!
Follow all safety recommendations and safe shop practices
outlined in the front of this manual or those contained
within this section.
Always use tools and equipment that are in good working
order.
Use lifting and hoisting equipment capable of safely
handling load.
Remember, that ultimately safety is your own personal
responsibility.
APPLICABLE MODELS
The contents of this section apply to the following models and
serial number ranges.
MODEL SERIAL NUMBER RANGE
DL300 5001 and Up
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SP000224
GENERAL DESCRIPTION
Power Steering System
Figure 1
Reference
NumberDescription
4 Main Pump
5 EHPS Valve
6 Steering Cylnder
Reference
NumberDescription
1 Cushion Valve
2 Steering Unit
3 Main Block Valve
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CL (PF1/2) CR (PF1/2) R
EHPS
2
L R
4 3 5
P T
PUMP
L (PF1/2) (PF1/2)
LOADER PUMP P1
1.1/4"
P3
1.1/4"
TPM
1/4"
230 BAR 230 BAR
STEER PUMPEF
1.1/4"
BRAKE/PILOT PUMP
R2
2"
EF
C
1"
1.1/2"
R1
Ps
(PF1/2)
HT
BLOCK VALVETs
(PF1/2)
P (PF3/4) T (PF1/2)
6
STEERING CYL.
CUSHION V/V
1
STEER UNIT
Figure 2 HYDRAULIC CIRCUIT
FG004919
Reference
NumberDescription
4 Main Pump
5 EHPS Valve
6 Steering Cylnder
Reference
NumberDescription
1 Cushion Valve
2 Steering Unit
3 Main Block Valve
5KPH0.5" K
EST-37A