New Holland_Ford 5640, 6640, 7740, 7840, 8240, 8340
Complete workshop & service manual with electrical wiring diagrams for Ford New Holland 40 Series (5640, 6640, 7740, 7840, 8240, 8340) Tractors. It’s the same service manual used by dealers that guaranteed to be fully functional and intact without any missing page.
This Ford New Holland 40 Series (5640, 6640, 7740, 7840, 8240, 8340) Tractors service & repair manual (including maintenance, overhaul, disassembling & assembling, adjustment, tune-up, operation, inspecting, diagnostic & troubleshooting…) is divided into different sections. Each section covers a specific component or system with detailed illustrations. A table of contents is placed at the beginning of each section. Pages are easily found by category, and each page is expandable for great detail. The printer-ready PDF documents work like a charm on all kinds of devices.
“840564061.pdf”
Ford New Holland 40 Series (5640, 6640, 7740, 7840, 8240, 8340) Tractors Service Manual
1,452 pages PDF
Part number 840564061 English
Ford New Holland 5640, 6640, 7740, 7840, 8240, 8340 Tractors Repair Manual
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EXCERPT:
8. HYDRAULIC CIRCUIT DESCRIPTION
The circuits provided with oil by the transmission mounted hydraulic pumps can be separated into the following categories:
Tractors With Closed Centre Load Sensing Variable Displacement Hydraulic Pump:
• High pressure circuit oil up to a maximum pressure of 2800 lbf/in2 (193 bar) for operation of the hydraulic lift assembly, remote control valves and auxiliary hydraulic equipment, where fitted.
• Low pressure circuit oil for operation of the 16 x 16 transmission control circuits, PTO, differential lock, electronic draft control valve pilot pressure and four wheel drive circuits, where fitted.
• Hydrostatic steering system oil up to a maximum pressure of 2500 lbf/in2 (172 bar) which is then regulated to provide low pressure oil for lubrication of the PTO and 16 x 16 transmission.
Tractors With Fixed Displacement Tandem Gear Type Pump:
• High pressure oil up to a maximum pressure of 2650 lbf/in2 (183 bar) for operation of the hydraulic lift assembly, remote control valves and auxiliary hydraulic equipment, where fitted.
• Hydrostatic steering system oil up to a maximum pressure of 2500 lbf/in2 (172 bar) which is then regulated to provide low pressure oil for operation of the PTO, four wheel drive disengagement system, differential lock and lubrication of 12 x 12 transmission synchronizers, bearings, output shaft and PTO.
The basic hydraulic circuits for each type of installation are shown in schematic format in Figure 7, Figure 8 and Figure 9 of this Chapter.
For a detailed description and operation of the high pressure hydraulic lift circuits on Series 40 tractors refer to the following Chapters in this Part of the Repair Manual.
For tractors installed with the variable displacement hydraulic pump and electronic draft control, refer to Chapters 2 and 3.
For tractors installed with the variable displacement hydraulic pump and top link sensing, refer to Chapters 2 and 4.
For tractors installed with fixed displacement gear type hydraulic pumps, refer to Chapter 5.
For the hydraulic operation of the transmission, PTO, differential lock, steering and four wheel drive disengagement systems, refer to the appropriate Part and Chapters of this Repair Manual which describe the operation of the component.
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