When a split tractor is waiting on you and planting weather won't, 594 pages of factory procedure are the difference between a weekend job and a lost week: this New Holland 1715 service manual PDF (OEM ID 40132030) covers all five compact diesels in the line, from the 1320 to the 1720. Wiring diagrams trace the charging, starting, and glow plug circuits, while hydraulic schematics map the pump, remote valve, and control valve assembly. Tractor separation alone fills nearly a third of the book, and the gear, hydrostatic, and 12 X 12 synchromesh shuttle transmissions each carry their own overhaul section. Set the hydrostatic high pressure relief valve to 3981 psi (274 bars) on the 1320/1520 and pull connecting rod caps to 36.2-39.8 lbs. ft. on the 1320/1520/1720 during your rebuild. Nothing stalls a teardown like one missing torque figure. Bookmarked for quick jumps, the PDF rides along wherever the tractor quit, field edge or shop bench.
What's Inside This Ford 1320–1720 Manual
| System | Pages | Key Topics |
|---|---|---|
| Production Date Codes and Serial Numbers | 5 | Tractor Identification Plate, Production Identification Number, Model, Unit, Engine |
| Safety Precautions | 6-8 | Personal Considerations, Equipment Considerations, Hand Tools, General Considerations, Operational Considerations |
| Service Techniques | 9-10 | Service Safety, Hoses and Tubes |
| Engine Systems | 11-66 | Engine and Lubrication System, Cooling System, Trouble Shooting, Specifications and Special Tools |
| Fuel System | 67-88 | Injection Pump, Injectors, Trouble Shooting, Specifications and Special Tools |
| Electrical System | 89-146 | Wiring, Switches, Glow Plugs and Instrumentation, Battery, Starting Systems, Charging System |
| Clutches | 147-170 | Single Clutch, Double Clutch 1320-1520, Double Clutch 1720 |
| Transmission Systems | 171-262 | 9 X 3 Gear Transmission, Hydrostatic Transmission, Non-Synchromesh 12 X 4 Gear Transmission, Synchromesh 12 X 12 Shuttle Transmission |
| Power Take-Off Systems | 263-282 | Transmission Drive Power Take-Off, Live Power Take-Off, Power Take-Off Drive, Power Take-Off Overhaul, Mid-Mount Power Take-Off |
| Differential, Rear Axle and Brakes | 283-306 | Differential Assembly, Differential Lock, Rear Axle, Brakes, Final Pinion |
| Hydraulic System | 307-352 | Hydraulic System Circuits, Hydraulic Pump, Filter, Remote Valve, Control Valve Assembly |
| Steering Systems | 353-376 | Power Steering System, Power Steering Control Valve, Power Steering Pump, Power Steering Cylinder, Manual Steering System |
| Front Axle and Related Parts | 377-402 | Two Wheel Drive, Four Wheel Drive, Front Axle Pivot, Spindle, Gear Reduction Drop Box |
| Wheels and Tires | 403-414 | Tread Setting, Weight Limitations, Lug Nut Torque, Liquid Ballast, Tire Inflation |
| Separating the Tractor | 415-594 | Front Axle Removal, Engine Support Rails, Transmission Removal, Clutch Housing, Rear Axle Removal, Center Housing |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| 1320/1520/1720 | ||
| Connecting Rod Caps | 36.2-39.8 lbs. ft. (49.0-53.9 Nm) | p. 63 |
| Head Bolts | 65.1-68.7 lbs. ft. (88-94 Nm) | p. 63 |
| Water Pump Belt Deflection | 7/16 to 9/16 inch (10 to 15 mm) | p. 63 |
| All Models | ||
| Current Draw (No Load) | 130 Amp. | p. 144 |
| Engine Oil Pressure Relief Valve Opening Pressure | 35-50 psi | p. 62 |
| Thermostat Starts to Open | 160°F | p. 63 |
| Thermostat Fully Open | 185°F | p. 63 |
| 1320/1520 | ||
| Hydraulic Pump Capacity (1320/1520) | 6.35 gpm (24.9 lpm) | p. 351 |
| Hydrostatic Transmission High pressure relief valve | 3981 psi (274 bars) | p. 260 |
| Alternator Belt Deflection | 0.200 in. (5 mm) | p. 51 |
| 1320, 1520 | ||
| Injection Pressure (1320/1520) | 1706 psi | p. 86 |
| 1720 | ||
| Injection Pressure (1720) | 2150 psi | p. 86 |
Ford 1320–1720 Common Problems This Manual Covers
Four wheel drive disengages or pops out under load when pulling uphill
Check the four wheel drive engagement linkage for wear and free play; a stretched linkage leaves the coupler half-engaged and it kicks out under torque. Adjust the linkage for full shift travel, then inspect the coupler and shift fork using the Front Axle and Related Parts section starting on page 377. Recheck engagement under load after 1 hour of fieldwork.
Manual Section: Front Axle and Related Parts p. 377Engine runs hot during heavy tillage, temperature gauge climbs and coolant level drops
Check coolant level and fan belt condition before pulling the thermostat; a glazed or loose belt slips under load and starves the water pump. Replace cracked belts and worn pulleys, flush the radiator, then run the overheating checks starting. Verify the fix by working the tractor 20 minutes at full load and watching the gauge.
Manual Section: Engine Systems TroubleshootingFrequently Asked Questions
How do you fix new Holland 1620 hydrostatic transmission loses forward power uphill, HST pedal sticks under load?
Check the hydrostatic transmission oil level and condition first; milky or burnt-smelling oil points to heat damage or water. Change the fluid and hydraulic filter, then work through the hydrostatic section of the Transmission Systems chapter starting on page 171. Test drive on a grade after 15 minutes of warm-up; if power still fades, suspect internal pump leakage. p. 171
How do you fix hydraulic functions fade and oil overheats after extended work, three-point hitch drops until tractor cools?
Drain and replace the hydraulic oil and filter before chasing internal leaks; overheated fluid thins and bleeds past worn pump clearances. Trace the lift circuit against the hydraulic schematic on page 312 and check for restricted suction lines. If the three-point hitch fades again after 30 minutes of work, pressure test the pump before harvest traps you. p. 307
How do you fix engine cranks but will not start, intermittent electrical faults from cracked harness insulation?
Test battery voltage at rest before anything else; a healthy charge reads about 12.6 volts. Inspect the harness for cracked insulation and corrosion at the starter, ignition switch, and ground connections, matching each circuit against the wiring diagram. Clean and tighten every ground strap, then repair or replace any brittle wiring. p. 89
How will I receive this New Holland 1320 Service Manual?
Instant PDF download. You get the full 594-page scanned Service Manual immediately after payment. Open it on your laptop, tablet, or phone right in the shop.
Can I print specific sections of this New Holland 1320 Service Manual?
Yes, printing is unrestricted: a single page, a chapter, or the lot, on letter or A4.
Can I trace hydraulic lines with this New Holland 1320 manual?
Yes. The manual includes hydraulic circuit diagrams, system schematics, and component specifications with pressure ratings. You can see one on page 43.
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