Part of the John Deere Repair Manuals.
Gear box repair is the hardest work in TM3224, the 34-page John Deere 1320 technical manual pdf for the Impeller Mower-Conditioner, and from there the book widens to the cutterbar, power lifting and general specifications. Exploded views show how the power train and mower unit fit together, while repair, installation and reassembly procedures take each assembly back to working order, with troubleshooting charts to help you pin down a fault before anything comes apart. Torque tables cover driveline hardware such as the 75 Nm bearing quill mounting screws. Hold the cutterbar drive shaft bearing clearance at 0.025 to 0.10 mm, and note that the gearbox takes 4 liters of oil. Your task may be a cutterbar repair and reassembly. Bookmarks and a text layer take you straight to the Gear Box section, so a seal or bearing check begins with the right page already open.
What's Inside This John Deere 1320 Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 5-8 | Introduction, Specifications |
| Power Train | 9-18 | Gear Box, Repair, Installation |
| Mower Unit | 19-30 | Cutterbar, Repair, Reassembly |
| Miscellaneous | 31-34 | Power Lifting |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Rotor drive shaft bearing preload torque | 0.6 to 1.1 Nm | p. 16 |
| Input shaft drag torque | 1 to 2 Nm | p. 15 |
| Cutterbar drive shaft bearing clearance | 0.025 to 0.10 mm | p. 15 |
| Bearing quill mounting screw torque | 75 Nm | p. 16 |
| Primary cylinder lock nut torque | 450 Nm (45 mkp; 327 ft-lb) | p. 32 |
| Primary Cylinder Lock Nut Torque | 450 Nm | p. 32 |
| Machine Weight | 1200 kg | p. 7 |
| Rotor Speed | 610 or 850 rpm | p. 7 |
| Recommended Tractor PTO Speed | 540 rpm | p. 7 |
| Tire Inflation Pressure | 150 kPa | p. 7 |
| Gear Box Oil Capacity | 4 liters | p. 17 |
| Cutterbar Oil Capacity | 2.25 liters | p. 29 |
John Deere 1320 Common Problems This Manual Covers
John Deere 1320 impeller mower-conditioner power train gear box producing abnormal noise during operation
Check oil level at the check plug first. Page 10 lists low oil ahead of loose bearings, excessive gear backlash and seized gears. Fill with SAE 85-140 API GL5 oil to the check plug (4 liters total, page 17). If the noise stays, reshim the input and cutterbar drive shaft hubs for 0.10 to 0.15 mm backlash following page 16.
Manual Section: Gear Box Malfunctions p. 17Power train gear box overheating with the oil level correct at the check plug
Inspect for seized gears and defective bearings, then check rotor drive shaft bearing preload, the other overheating causes listed on page 10. Shim under the bearing quills so the shaft rotates freely at 0.6 to 1.1 Nm following page 16. Leave the oil seal out while setting preload, and use only two screws per quill until shim thickness is final.
Manual Section: Gear Box Malfunctions p. 10Power train gear box leaking oil around the oil seals and mounting hardware
Check that oil sits at the check plug and not above it. Page 10 lists an overfilled box as a leak cause, along with a defective oil seal and improperly torqued hardware. Replace any defective seal, and fit new seals anytime the box has been opened. Coat the sealing surfaces with sealant and torque the bearing quill mounting screws to 75 Nm following page 16.
Manual Section: Gear Box Malfunctions p. 10Six rotary knife disk cutterbar housing running hot and overheating during mowing
Check cutterbar oil volume first. Page 20 lists more than 2.25 liters as an overheating cause, so drain down to the capacity on page 29. Verify the oil grade against the Lubrication section. If heat persists, remove and split the cutterbar to inspect for defective or incorrectly mounted bearings. Before working under the raised platform, block each end against dropping, as the page 20 caution requires.
Manual Section: Cutterbar Malfunctions p. 20Rotary disk cutterbar producing abnormal noise while the six knife disks are turning
Check cutterbar oil level first, since page 20 lists low oil ahead of defective gears or bearings and bent or warped disks. Top up without exceeding 2.25 liters (page 29). Inspect each knife disk for bending or warping and replace damaged ones. Torque the disk attaching nut to 140 Nm and do not exceed it; page 29 warns that overtightening damages the cupped spring washer.
Manual Section: Cutterbar Malfunctions p. 20Rotary disk cutterbar leaking oil around the seals and the cutterbar half tie-down screws
Replace defective seals and check all hardware for proper tightness, the two leak causes listed on page 20. Clean the hexagon socket heads so the wrench grips fully, then torque the tie-down screws joining the cutterbar halves to 300 to 350 Nm per page 29. Replace any tie-down screw with doubtful threads or heads, and fit new plastic inserts, since removed inserts cannot be reused.
Manual Section: Cutterbar Malfunctions p. 20Frequently Asked Questions
What is the gear box oil capacity for the 1320 Impeller Mower-Conditioner?
The total gear box capacity is 4 liters (approximately 1 U.S. gallon). Fill the gear box to the check plug level with SAE 85-140 API GL5 oil. p. 17
What is the oil capacity for the cutterbar on the John Deere 1320?
The filling capacity of the cutterbar is 2.25 liters (approximately 2.20 U.S. quarts). Do not exceed this limit, as overfilling will produce excessive heat and may cause damage to the cutterbar. p. 29
What is the torque specification for the cutterbar tie-down screws on the John Deere 1320?
The tie-down screws used for joining the cutterbar halves must be tightened to a torque of 300 to 350 Nm (30 to 35 mkp; 218 to 255 ft-lb). Insert all screws loosely before tightening them to their final torque. p. 29
What is the torque specification for the primary cylinder lock nut on the John Deere 1320?
When reassembling the primary cylinder, the lock nut must be tightened to a torque of 450 Nm (45 mkp; 327 ft-lb). p. 32
How quickly can I access this John Deere 1320 manual after buying?
Straight to your device: 34 pages of searchable Technical Manual, downloadable the moment payment goes through.
Can I print a copy of this John Deere 1320 Technical Manual for the shop?
Yes. Print the pages you need for the job in your own shop, and bin them when they get greasy.
