All 20 pages of this Sperry New Holland 495 Service Manual (OEM #40049511) do one thing: give you factory-level rebuild procedures for your Haybine Mower-Conditioner. Inside, you get exploded-view diagrams covering every major driveline assembly, from the wobble hub and trunnion bearing stack to reel U-joints and conditioner roll timing. Complete removal, disassembly, assembly, and installation sequences run through the gearbox slip clutch, reel drive jackshaft, cam bearings and bushings, and conditioner rolls. Set wobble shaft bearing running fit to 6-10 in. lbs. (.68-1.13 N·m), then torque the knife head bolt lock nut to 85 ft. lbs. (115 N·m), straight from the factory spec sheet. Your 495 is down and the hay isn't waiting. Bookmarks drop you straight to any assembly section; search by keyword, pull the spec, and get back to work.
What's Inside This Sperry New Holland 495 Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction and Table of Contents | 2 | - |
| Wobble Drive | 3-5 | Wobble Hub, Wobble Shaft, Wobble Yoke, Trunnion Bearing, Steady Rest Support, Sickle Drive Belt |
| Gearbox | 6-7 | Input Shaft, Output Shaft, Pinion Gear, Bevel Gear, Bearings, Slip Clutch Assembly |
| Main Drive Shaft | 8 | Conditioner Roll Drive Chains, Lock Collar, Roll Drive Sprocket, Coupler Sprocket, Bearing Brackets, Shaft |
| Reel Drive Jackshaft | 9 | Reel Drive Chain, Reel Drive Belt, Reel Drive Sprocket, Jackshaft Assembly, Tapered Roller Bearings, Idler Arm |
| Reel Tine Bar Bearings | 10 | Tine Bar Bearing, Inner Spider Leg, Dust Cap, Snap Ring, Bearing Housing, Grease |
| Reel U-Joints | 11-12 | Universal, Bearing Housing Assembly, Hardened Washer, Snap Ring, Reel Tube, Spider Assembly |
| Reel Cam Bearings and Bushings | 13-14 | Cam Assembly, Reel Tube Shaft, Bearing Locking Collar, Bearing Housing, Cam Rollers, Bushings |
| Conditioner Rolls | 15-17 | Header Lift Springs, Upper Link Bolt, Roll Drive Chains, Torsion Bar Linkage, Roll Bearing Support Plate, Roll Drive Sprockets |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Knife head bolt lock nut torque | 85 ft. lbs. (115 N·m) | p. 5 |
| Wobble shaft bearings running fit | 6-10 in. lbs. (.68 to 1.13 N·m) | p. 4 |
| Trunnion bearing caps force to rotate hub | 6-10 in. lbs. (.68-1.13 N·m) | p. 4 |
| Wobble drive trunnion bearing shim sizes | .003", .005", .007", and .020" | p. 4 |
| Gearbox output shaft shim sizes | .003", .005", .007", and .020" | p. 7 |
| Reel drive chain spring overall length | 7" (177 mm) | p. 9 |
| Upper roll drive chain deflection | 3/16" (4.8 mm) | p. 17 |
| Reel U-joint bearing bolts torque | 150 ft. lbs. (203 N·m) | p. 12 |
| Wobble yoke assembly vertical movement | no more than .006" (.15 mm) | p. 5 |
| Gearbox backlash between gears | .004" to .012" | p. 7 |
| Wobble Shaft Bearing Running Fit | 6-10 in. lbs. | p. 4 |
| Wobble Yoke Assembly Vertical Movement Limit | .006" (.15 mm) | p. 5 |
Sperry New Holland 495 Common Problems This Manual Covers
Sperry New Holland 495 knife sections leaving ragged stubble, guards worn, crop not cut cleanly p. 5
Check knife sections and ledger plates for wear; replace any cracked or dull sections. Torque knife head bolts to 85 ft. lbs. (115 N·m) per the torque specs on page 5. Inspect hold-down clips and guard alignment to ensure the knife rides flat across all guards without lifting or skipping.
Manual Section: Wobble DriveConditioner rolls not crimping or feeding hay properly, roller tension feels loose or unresponsive p. 17
Remove the roll drive shield and check both upper and lower roll drive chain deflection. Adjust upper chain to 3/16" (4.7 mm) and lower chain to 1/2" (12.7 mm) per the specs on page 17. Verify roll timing marks align after reassembly, and inspect the torsion bar linkage and roll bearing support plates for wear or seized hardware.
Manual Section: Conditioner RollsMachine running hot, bearing noise present, wobble shaft or gearbox has excessive play or vibration p. 5
Spin each bearing by hand and check for heat, roughness, or drag. Measure wobble yoke vertical movement: it must not exceed .006" (.15 mm) per page 5. For the gearbox, verify input shaft bearing drag reads 5 to 10 in. lbs. (.56-1.13 N·m) on page 7. Replace any bearing showing play, discoloration, or rough rotation.
Manual Section: Wobble DriveReel drive chain stiff or dry, U-joints binding, drive components skipping under load p. 12
Clean and inspect the reel drive chain and all sprockets per the jackshaft service procedure on page 9. Check reel U-joint bearing bolt torque: tighten to 150 ft. lbs. (203 N·m) per page 12. Grease all fittings on the reel tine bar bearings, cam assembly, and jackshaft. Replace any chain with stiff links or kinked side plates.
Manual Section: Reel U-JointsReel wobbles side to side, cam assembly has lateral slop, tine bar bearings feel loose p. 14
Inspect reel cam wear plates for groove depth: replace if any groove exceeds 1/32" (.8 mm) deep per page 14. Check reel lateral movement and keep it under 1/8" (3 mm). Torque reel tine bar bearing nuts to 150 ft. lbs. (203 N·m) per page 11. Replace worn cam rollers and bushings showing visible scoring or flat spots.
Manual Section: Reel Cam Bearings and BushingsFrequently Asked Questions
How do I fix ragged stubble cut on a Sperry New Holland 495?
Check knife sections and ledger plates for wear; replace any cracked or dull sections (page 5). Inspect guard alignment — misaligned guards cause uneven cutting even with sharp knives.
What should I check if the conditioner rolls are not crimping properly on the 495?
Remove the roll drive shield and check both upper and lower roll drive chain deflection and tension (page 17). Loose or stretched chain prevents the rolls from maintaining consistent pressure on the crop.
What causes the Sperry New Holland 495 to run hot or make bearing noise?
Spin each bearing by hand and check for heat, roughness, or drag. Measure wobble shaft runout and inspect the gearbox for excessive play or vibration (page 5). Replace any bearing that fails the spin test before it seizes.
How do I inspect reel cam wear on the New Holland 495?
Inspect reel cam wear plates for groove depth: replace if any groove exceeds one-third of the plate thickness (page 14). Excessive groove wear causes the reel to wobble side to side and tine bar bearings to loosen prematurely.
What do I get after purchasing this Sperry New Holland 495 manual?
A 20-page Service Manual in searchable PDF format, available the moment you complete checkout. View it on computer, tablet, or phone — browser or any PDF viewer.
Are there any print restrictions on this manual?
Yes. The PDF carries no DRM restrictions, so print any page or section you need for your shop. Works with any standard printer.
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