New Holland T8010 Manual page 425

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Table of Contents

Section 25 - Four-Wheel Drive Front Axle - Chapter 2

1. PTO/DIFF LOCK VALVE

2. DIFF LOCK SOLENOID

Differential Lock Valve

The differential lock valve is a closed center valve and is contained as a part of the PTO valve. Oil is supplied to the

differential lock cartridge valve from the regulated pressure circuit. The differential lock clutch supply flow is

distributed internally (no external tubing) to the clutch. The valve is mounted on the top of the rear frame

transmission housing. The following components of the PTO valve are involved in the differential lock system.

Solenoid Cartridge Valve

The solenoid is controlled by an armrest mounted rocker switch. The armrest controller communicates (via the

Data Bus) with the PTO controller. The PTO controller supplies current to the differential lock valve to activate the

differential lock clutch based on commands from the operator (differential lock switch) and signals supplied to it

from the brake pedal switches, true ground speed circuit, hitch position control system, and transmission speed

signal circuit. The differential lock is a hydraulically applied clutch.

Chapters

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T8020 T8030 T8040