All 676 pages of this Case Ih Agriculture Precision Disk 500 and Disk 500T Service Manual (OEM #47648331) are built around one goal: getting your disk drill back to factory condition. You get hydraulic schematics with full pressure circuit routing, wiring diagrams backed by complete connector pinouts for every electrical node, exploded views across axle, metering, and seeding assemblies, plus a DTC error code section for rapid fault identification. The electrical systems coverage runs from initial calibration through diagnostics, so you're not chasing ghosts. Torque the 1/2 UNF Grade 5 bolts to 102 N·m dry; the meter clutch static torque on the 500T sits at 33.9 N·m (300 lb in). Your drill is down and the field won't wait. Pull up this PDF on your tablet, jump to any section by bookmark, and get back to work.
What's Inside This Case Ih Agriculture 500/500T Precision Disk Drill Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | 6-73 | Foreword, Safety Rules, Hand Signals, Safety Signs – Disk Drill, Safety Signs - Disk Drill with Mounted Tank |
| Front Axle System | 74-89 | Axle Wheel Hub, Non-Powered Front Axle, Caster Hub, Spindle |
| Rear Axle System | 90-105 | Non-Powered Rear Axle, Wheel Hub, Caster Hub, Spindle, Rear Walking Beam |
| Hydraulic Systems | 106-221 | Seeding Hydraulic Circuit, Subbar and Pressure Valve Block, Frame Control Valve, Meter Control Valve, Motor Valve Block, Disk Drill, Disk Drill with Mounted Tank, Hydraulic Symbol |
| Wheels | 222-229 | Front Wheels, Precision Disk 500T, Precision Disk 500 |
| Electrical Systems | 230-623 | Electrical System, Harnesses and Connectors, Light Harnesses, Seeding Control System, Cab Seeding Controls, Electronic Modules, Fault Codes |
| Metering System | 624-633 | Product Metering, Seed Meter Drive, Precision Disk 500T, Precision Disk 500 |
| Seeding | 634-676 | Product Handling and Delivery Drive System, Seeding Fan System, Seeding Tool, Precision Disk 500T, Precision Disk 500 |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Precision Disk 500T | ||
| Static torque (meter clutch) | 33.9 N·m (300 lb in) | p. 412 |
| Chain length adjustment | The chain length will not need to be adjusted. | p. 629 |
| Precision Disk 500T - 7.6 m (25 ft) BASE MACHINE Transport Height (1) | 3.36 m | p. 63 |
| Seeding Control System - Meter Clutch Static Torque | 33.9 N·m | p. 412 |
| All Models | ||
| Torque (Pressure relief, pilot operated, spool type valve) | 25 - 30 N·m (18.5 - 22 lb ft) | p. 109 |
| Opener hub bearing maintenance | No bearing maintenance is required | p. 649 |
| Bolt Torque (Grade 5, 5.1 or 5.2, 1/2 UNF, Dry) | 102 Nm | p. 39 |
| Safety Chain (3 section machines) | 18140 kg | p. 61 |
| Noise Level | 80 dB | p. 63 |
| Single Disk Opener Coulter Diameter (new) | 45.7 cm | p. 649 |
| Precision Disk 500 | ||
| Precision Disk 500 - 9.1 m (30 ft) BASE MACHINE Width of Cut | 9.1 m | p. 61 |
| Precision Disk 500 - Single 12.51L x 15 (D) Wings Tire Pressure | 414 kPa | p. 225 |
Case Ih Agriculture 500/500T Precision Disk Drill Common Problems This Manual Covers
Case IH Precision Disk 500T meter clutch slipping or failing to engage, SPN-FMI fault codes active (e.g., 520315-00) p. 489
Check the clutch assembly for wear and verify static torque meets the 33.9 N·m (300 lb in) specification shown on page 412. Inspect tension components and electrical connections at the clutch harness. Check for SPN-FMI fault codes related to clutch operation (e.g., 520315-00, 520315-03, 520315-04) in the 'FAULT CODES' section (page 489) before disassembly. Replace the clutch assembly if torque falls below spec under no-load test.
Manual Section: Electrical Systems - 55Pressure sensor throwing SPN-FMI fault codes (e.g., 520310-00), seed depth reading erratic or jumping between rows p. 489
Inspect the sensor connector for moisture, corroded pins, or bent terminals per the connector inspection procedure. Measure supply voltage at the sensor harness. Check for SPN-FMI fault codes related to hydraulic downpressure sensors (e.g., 520310-00, 520310-03, 520310-04) in the 'FAULT CODES' section (page 489). If connections are clean and voltage is within spec, refer to 'Seeding tank sensors - Adjust' on page 471 for physical adjustment. Replace the sensor only after confirming wiring integrity.
Manual Section: Electrical Systems - 55Seed trenches not closing in heavy cornstalk residue, poor seed-to-soil contact after pass p. 659
Inspect closing wheel arms and pivot points for wear, then check that closing wheels move freely without binding. Verify opener coulter diameter is within acceptable range — a new single disk opener measures 45.7 cm (page 649); worn disks below minimum will fail to cut residue cleanly. Review the furrow-not-closing checklist on page 659 and adjust closing wheel spring pressure to increase downforce on the arms.
Manual Section: Seeding - 77Row unit bearings wearing out prematurely, grinding noise at opener hub after limited season hours p. 649
Inspect the opener hub and disk blade for lateral play and rough rotation. Note that no bearing maintenance (lubrication or adjustment) is required per the design spec on page 649 — if bearing noise is present, the hub assembly needs replacement, not service. Check that disk blades are not contacting gauge wheels, which causes side-load and accelerates bearing failure. Remove and replace the opener hub assembly as a unit.
Manual Section: Seeding - 77Meter stalling or turning erratically during seeding, seed rate inconsistent across passes p. 630
Check the metering system troubleshooting steps on page 630 — confirm the drive chain is not skipping and the meter shaft turns freely by hand. On the Precision Disk 500T, note that chain length does not require adjustment; if the chain is loose, inspect for a worn sprocket rather than trying to shorten the chain. Clear any product bridging in the meter housing and verify the fan is delivering adequate air pressure before blaming the meter drive.
Manual Section: Metering System - 61Air distribution uneven across rows, product plugging secondary hoses on one wing during operation p. 671
Inspect all secondary hoses for restrictions and verify primary hose lengths are balanced — acceptable length difference between primary hoses is no more than 1.2 m (page 665). Check y-splitters for seed or fertilizer buildup that can divert airflow to one side. Review the full air distribution troubleshooting checklist on page 671, including hose routing and speed-related plugging, before replacing any components.
Manual Section: Seeding - 77Frequently Asked Questions
How to reset the AFS Pro 700 display on Case IH Precision Disk 500T?
To reset the ECU, select 'UTIL' from the Main Screen, then select 'RESET'. Confirm the operation by selecting 'YES' or 'NO'. Note that the ECU cannot be reset if ground speed is detected.
How to fix plugging issues with Case 500T drill in corn stalks
To address plugging issues, ensure the seed flap is not preventing soil flow by removing it if openers are plugging in silty, mucky soils. For plugging of gauge wheels, adjust the gap to 4 mm (1/8 in) or less by removing or adding spacers. If seed tubes are plugging, use clean and dry seed/fertilizer, and ensure proper air flow rates from the air system.
How to adjust scrapers and install heavier scraper springs on Precision Disk 500T
To adjust the scraper fit, loosen the two bolts (1), hold the scraper in the working position, and retighten the bolts to 115 N·m (85 lb ft). If build-up occurs where the scraper and trash shield meet, add a washer (P/N 86632589) to the front bolt between the scraper bolt, the scraper, and the scraper mount.
What are the replacement specifications for Clutch assembly?
The meter clutch has a static torque of 33.9 N·m (300 lb in). Its electrical data specifies 12 V and 2 A (nominal).
What do I get after purchasing this Case IH 500/500T Precision Disk Drill Service Manual?
You get a 676-page searchable PDF that downloads instantly after checkout. Open it on your laptop, tablet, or phone, and bring it right to the shop floor.
Is this Case IH 500/500T Precision Disk Drill Service Manual print-restricted?
Yes, print as many copies as you want, and there are no restrictions. Many mechanics print the section they need and bring it to the shop floor.
Are there wiring harness diagrams in this Case IH 500/500T Precision Disk Drill Service Manual?
Yes. You'll find full electrical schematics with wire routing diagrams, connector identification, and circuit descriptions.
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