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مايو 25, 2026

D155AX-5 Bulldozers – Hydraulic Fan Circuit | Soufyane HydroTech

 Training Catalog · JETT000200

D155AX-5 Bulldozers
Hydraulic Fan Circuit

Chapter 6 · Prepared by J. Ghesquiere · Komatsu

 12 Pages  Fan Pump · Fan Motor · EPC Valve ⚙️ Reversible Valve · Safety Valve

01 / 12Cover – D155AX-5 Bulldozers

Cover – D155AX-5 Bulldozers

02 / 12Fan Circuit – Overview

Fan Circuit – Overview

03 / 12Fan Motor

Fan Motor

04 / 12Fan Pump – Function

Fan Pump – Function

05 / 12Cooling Fan Pump No.1 – Servo Control

Cooling Fan Pump No.1 – Servo Control

06 / 12Cooling Fan Pump No.2 – Detailed Operation

Cooling Fan Pump No.2 – Detailed Operation

07 / 12Cooling Fan Pump No.3 – Pump Started

Cooling Fan Pump No.3 – Pump Started

08 / 12Cooling Fan Pump No.4 – Pump Stopped

Cooling Fan Pump No.4 – Pump Stopped

09 / 12Cooling Fan Pump No.5 – Reversible Valve OFF

Cooling Fan Pump No.5 – Reversible Valve OFF

10 / 12Cooling Fan Pump No.6 – Reversible Valve ON

Cooling Fan Pump No.6 – Reversible Valve ON

11 / 12Cooling Fan Pump No.7 – Safety Valve

Cooling Fan Pump No.7 – Safety Valve

12 / 12Fan Pump – Field Photo

Fan Pump – Field Photo

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