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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