Complete workshop repair & service manual with electrical wiring diagrams for Ford New Holland 70(A) Series Tractors (8670, 8670A, 8770, 8770A, 8870, 8870A, 8970, 8970A). 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 70(A) Series Tractors (8670, 8670A, 8770, 8770A, 8870, 8870A, 8970, 8970A) 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.

4,500+ pages, bookmarked, Searchable, Printable, high quality PDF

“87018730.pdf”
Ford New Holland 70(A) Series Tractors (8670, 8670A, 8770, 8770A, 8870, 8870A, 8970, 8970A) Service Manual
2,146 pages PDF
Part number 87018730 English 6/02
Ford New Holland 70, 70A Series Tractors (8670, 8670A, 8770, 8770A, 8870, 8870A, 8970, 8970A) Repair Manual
BOOK 1 - 87018723
BOOK 2 - 87018724
BOOK 3 - 87018725
BOOK 4 - 87018726
BOOK 5 - 87018727
BOOK 6 - 87018728
BOOK 7 - 87018729
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"87018723 - New Holland 70(A) Series Tractors Repair Manual (General Information, Engine, Transmission).pdf"

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“Service Manual.pdf”
Ford New Holland Tractors 8670, 8670A, 8770, 8770A, 8870, 8870A, 8970, 8970A Service Manual
2,105 pages PDF

EXCERPT:
SECTION 27 - REAR DRIVE AXLE - CHAPTER 1
70A SERIES DIFFERENTIAL LOCK CONTROL SYSTEM OPERATION
INTRODUCTION
A self-holding differential lock is installed in the rear axle to lock the rear wheels together in conditions where wheel slip is encountered.
Units equipped with TerraLockt traction management four wheel drive, also come with a fully locking electro-hydraulically engaged front axle differential lock.
ENGAGING AND DISENGAGING DIFFERENTIAL LOCK
To engage the differential lock, the FAST RAISE/ WORK switch must be in the lower position, then depress and release the front part of the switch,1. The switch will return to the center position, but the differential lock will be activated.
The switch indicator light will illuminate to indicate the differential lock is engaged.
NOTE: Diff-lock will disengage if one brake is applied or when the 3-point hitch FAST RAISE/WORK switch is in the fast raise position or if the unit is operated above 16 kph (10 MPH ). Terralock will disengage at 10 kph (6 MPH) or below at turn angles of 20 degrees or higher or between 10-15 kph (6-9 MPH) at turn angles of 10 degrees or higher. In manual operation mode as described above the differential lock or Terralock will not reengage automatically and must be reengaged manually.
To turn off the differential lock, depress then release the rear part of the switch or apply either of the foot brakes.
ENGAGING AND DISENGAGING THE DIFFERENTIAL LOCK IN EITHER THE AUTOMATIC MODE OR TERRALOCK MODE
To engage the differential lock in either the Automatic mode or Terralock mode press and release the front of the lock switch twice within one second.
The amber differential lock lamp in the instrument panel will illuminate to indicate the differential lock is on in either Automatic mode or Terralock mode.
Auto differential lock will disengage when one brake is applied or when the 3-point hitch FAST RAISE/WORK switch is in the fast raise position.

Ford New Holland 70(A) Series Tractors (8670, 8670A, 8770, 8770A, 8870, 8870A, 8970, 8970A) Factory Service & Shop Manual