Part of the John Deere Repair Manuals.
All 162 pages of this John Deere 730 Technical Manual PDF (OEM CTM4820) zero in on the front-wheel drive axles fitted to the 730, 733, 740, 745, and 750. Inside: sectional and exploded views of the planetary drive, knuckle housing, steering cylinder, and differential, backed by full torque tables and fluid capacity data. You get step-by-step reconditioning procedures for the wheel hub, bevel pinion drive shaft, and self-locking differential, plus a troubleshooting section and a theory-of-operation breakdown explaining how the front axle and differential actually work. King pin preload on the 730 and 733 runs 0.5–0.6 mm; on the 740, 745, and 750 that spec shifts to 0.7–0.8 mm, with king pin cap screws torqued to 160–200 N·m. Your axle is apart and you're staring at a pile of shims. One-click download, search by keyword, find the spec, fix the machine.
What's Inside This John Deere 730-750 Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety Information | 11-22 | Recognize Safety Information, Important - Information, Note - Information, Prevent Machine Runaway, Handle Fluids Safely - Avoid Fires, Prepare for Emergencies |
| General Repair Information | 23-26 | General Safety and Repair Information, Metric Iso Standard Threads (N•m), Metric Iso Standard Threads (Lb-Ft), Metric Iso Fine Threads (N•m), Metric Iso Fine Threads (Lb-Ft) |
| Steering Cylinder and Tie-Rods | 27-46 | Other Material, Specifications, Steering Cylinder and Tie-Rods - Sectional View, Steering Cylinder and Tie-Rods - Exploded View, Removing the Tie Rods, Remove the Steering Cylinder |
| Planetary Drive and Wheel Hub | 47-82 | Special or Essential Tools, Other Material, Specifications, Planetary Drive and Wheel Hub - Sectional View, Planetary Drive, Multi-Disk Brake and Wheel Hub - Sectional View |
| Knuckle Housing and Drive Shafts | 83-110 | Special or Essential Tools, Other Material, Specifications, Knuckle Housing and Drive Shaft - Sectional View, Knuckle Housing and Drive Shaft - Exploded View |
| Axle Housing and Differential | 111-150 | Special or Essential Tools, Other Material, Specifications, Differential - Sectional View, Differential - Exploded View, Axle Housing - Exploded View, Removing the Axle Housing |
| Description and Theory of Operation | 151-160 | Front Wheel Drive Axles - Summary of References, Front Wheel Drive, Layout of Front Axle, Operation of Differential, Operation of Self-Locking Differential |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Assembly of axle housing, cap screws Torque | 200 to 220 N•m (148 to 162 lb-ft) | p. 113 |
| Steering cylinder on axle housing, cap screws Torque | 129 to 143 N•m | p. 28 |
| Front-wheel drive axle Toe-in | 1.5 mm | p. 28 |
| Hollow ring gear to knuckle housing, screws Torque | 68 to 75 N•m | p. 48 |
| Brake Test pressure | 5000 kPa | p. 48 |
| Bevel pinion drive shaft Rolling drag torque | 2 to 2.5 N•m | p. 113 |
| Differential, taper roller bearings Preload | 0.05 to 0.10 mm | p. 113 |
| 730, 733 | ||
| King pin to knuckle housing, cap screws Torque | 115 to 125 N•m (85 to 92 lb-ft) | p. 86 |
| Knuckle pin bearing Preload | 0.5 to 0.6 mm | p. 86 |
| 740, 745, 750 | ||
| King pin to knuckle housing, cap screws Torque | 160 to 200 N•m (118 to 147 lb-ft) | p. 86 |
| 730 | ||
| Tie-rods on piston rod Torque | 240 to 270 N•m | p. 28 |
| 740 | ||
| Ring gear, backlash | 0.25 to 0.33 mm | p. 113 |
John Deere 730-750 Common Problems This Manual Covers
John Deere 750 front axle rocks forward and rearward at the pivot pin mount
Remove the knuckle housing and inspect the pivot pin and bushing for wear or elongation. Measure king pin bearing preload: for 740, 745, and 750 the spec is 0.7 to 0.8 mm (page 86). Replace the bushing if clearance is out of range, then torque king pin cap screws to 160 to 200 N•m on reassembly.
Manual Section: Knuckle Housing and Drive Shafts p. 86Right front knuckle loses drive power or jerks abruptly under field load
Remove the right knuckle cover and inspect the bevel pinion gear teeth and bearing set for pitting or spalling. Pull the drive shaft and check the spline collar for wear. On reassembly, set king pin bearing preload per page 86: 0.5 to 0.6 mm for 730 and 733, or 0.7 to 0.8 mm for 740, 745, and 750.
Manual Section: Knuckle Housing and Drive Shafts p. 83Front planetary hub seals weep oil, wet ring visible around wheel flange
Clean the hub face and rotate the wheel slowly to pinpoint the leak source. Reseal the planetary drive cover and retorque hollow ring gear screws to 68 to 75 N•m (page 48). After resealing, pressure-test the brake circuit to 5000 kPa and hold; a pressure drop confirms a failed seal or cracked housing.
Manual Section: Planetary Drive and Wheel Hub p. 48Tractor pulls to one side, front wheels won't track straight after tire work
Center the steering and measure front-axle toe-in with tires at operating pressure. Spec is 1.5 mm toe-in for all models (page 28). Loosen the tie-rod lock nuts and adjust both rods equally to preserve left-right symmetry. Retighten the lock nuts, then recheck toe-in to confirm the adjustment held.
Manual Section: Steering Cylinder and Tie-Rods p. 28Growling or whining noise from the front differential under field load
Drain the axle housing and pull the differential to inspect bevel gears and tapered roller bearings for pitting or flat spots. Measure bevel pinion drive shaft rolling drag torque: spec is 2 to 2.5 N•m (page 113). Set taper roller bearing preload to 0.05 to 0.10 mm and verify ring gear backlash and load pattern on page 148 before closing.
Manual Section: Axle Housing and Differential p. 113Frequently Asked Questions
What are the torque specs for 733 axle housing bolts?
The torque specification for the assembly of axle housing cap screws on the 733 model is 200 to 220 N•m (148 to 162 lb-ft). This information is found in the 'Specifications' table under the 'Axle Housing and Differential' section. p. 113
Torque specifications for 750 axle mounting hardware
For the 750 model, the torque specification for the assembly of axle housing cap screws is 200 to 220 N•m (148 to 162 lb-ft). This detail is listed in the 'Specifications' table within the 'Axle Housing and Differential' section of the manual. p. 113
How do you fix john Deere 750 front axle rocks forward and rearward at the pivot pin mount?
Remove the knuckle housing and inspect the pivot pin and bushing for wear or elongation. Measure king pin bearing preload: for 740, 745, and 750 the spec is 0.7 to 0.8 mm (page 86). Replace the bushing if clearance is out of range, then torque king pin cap screws to 160 to 200 N•m on reassembly. p. 86
How do you fix right front knuckle loses drive power or jerks abruptly under field load?
Remove the right knuckle cover and inspect the bevel pinion gear teeth and bearing set for pitting or spalling. Pull the drive shaft and check the spline collar for wear. On reassembly, set king pin bearing preload per page 86: 0.5 to 0.6 mm for 730 and 733, or 0.7 to 0.8 mm for 740, 745, and 750. p. 83
What format is this manual in?
A 162-page Technical Manual in searchable PDF format, available the moment you complete checkout. View on computer, tablet, or phone, with no shipping wait.
Am I able to print pages from this manual?
Yes. The PDF has no DRM restrictions, so print any page or section you need for your shop. Works with any standard printer.
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