All 457 pages of this Case IH DC133 and DC163 Disc Mower Conditioner Service Manual (OEM #48049005) are factory-written to put your mower conditioner back in the field. You get hydraulic schematics for the tongue swing circuit and header lift/tilt circuit, full wiring diagrams with harness routing and connector callouts, and a nominal torque table for every fastener in the machine. Inside: complete PTO procedures covering the drive shaft, secondary and intermediate shafts, gearbox, and clutches; cutting mechanism and header frame service; plus roll conditioning, flail conditioning, and header drive teardown. Set rubber conditioner roll gap to 0.4–3 mm or steel rolls to 5–7 mm; run the conditioner drive at standard 750 RPM, or swap sheaves to drop to 640 RPM when conditions call for it. Your mower is down and hay doesn't wait. Bookmarked by system and keyword-searchable; open on any device and jump straight to the section you need.
What's Inside This Case IH DC133, DC163, Disc Mower Conditioner Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | 5-28 | Foreword - Important Notice Regarding Equipment Servicing, Safety Rules (Personal Safety, Ecology and the Environment), Torque - Nominal Tightening Torques for Normal Assembly |
| Power Take-Off (PTO) - 31 | 29-128 | Power Take-Off Drive Shaft, Secondary Power Take-Off, Intermediate Power Take-Off, Gearbox, Clutches |
| Hydraulic Systems - 35 | 129-196 | Component Localization, Functional Diagram, Hydraulic Schematic Frame 01 - Tongue Swing Circuit, Hydraulic Schematic Frame 02 - Header Lift / Header Tilt Circuit |
| Wheels - 44 | 197-212 | Carrying and Transport Wheels |
| Electrical Systems - 55 | 213-254 | Electrical System, Harnesses and Connectors, External Lighting |
| Attachments/Headers - 58 | 255-328 | Attachment/Header Cutting Mechanism, Attachment/Header Frame |
| Product Feeding - 60 | 329-455 | Header Drive System, Roll Conditioning, Flail Conditioning |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Conditioner drive belt tension spring length | 209 mm (8.25 in) | p. 333 |
| Roll conditioner diameter | 2 x 264 mm (10.38 in) | p. 22 |
| Roll conditioner speed | Standard 750 RPM (640 RPM optional by swapping sheaves) | p. 22 |
| Hydraulic Circuits Required Pressure | 104 bar (1500 psi) | p. 21 |
| PTO Shaft Spline and Size | 21-spline 1-3/8 in | p. 21 |
| Bevel Gearbox Oil Capacity | 800 mL (27 US fl oz) | p. 23 |
| Cutterbar Modules Oil Capacity | 310 mL (10 US fl oz) each | p. 23 |
| Transport Wheel Lug Bolts Torque | 230 N·m (150 lb ft) | p. 201 |
| Header Flotation Weight (Smooth Field) | 59 - 68 kg (130 - 150 lb) | p. 310 |
| Header Drive Belt Spring Tension Length | 209 mm (8.25 in) | p. 333 |
| DC133 | ||
| DC133 Shipping Weight (Without hitch) | 2912 kg (6420 lb) | p. 21 |
| DC163 | ||
| DC163 Shipping Weight (Without hitch) | 3104 kg (6843 lb) | p. 21 |
Case IH DC133, DC163, Disc Mower Conditioner Common Problems This Manual Covers
Case IH DC133/DC163 disc mower conditioner picks up excessive dirt in cut hay even at reduced ground speed p. 310
Check header flotation weight: target is 59-68 kg (130-150 lb) on smooth ground per page 310. Inspect pickup tines for wear or breakage; bent tines fail to lift crop before blade contact, dragging soil into the cut swath. Verify the cutterbar skid shoes ride flat and adjust header height so the cutting plane stays level with the crop base.
Manual Section: Attachments/Headers - 58Conditioning rollers produce uneven hay mat or incomplete stem cracking across windrow width p. 356
Inspect both 264 mm (10.38 in) diameter conditioner rolls for cracking, glazing, or flat spots per page 22. Measure roll gap: rubber rolls require 0.4-3 mm (1/64-1/8 in), steel rolls 5-7 mm (0.20-0.28 in) per page 356. Adjust with the clearance nut; each full revolution shifts the gap approximately 2 mm (0.079 in) per page 382. Replace cracked or delaminating rubber rolls immediately.
Manual Section: Product Feeding - 60Drive belt slips under heavy crop load, cutterbar speed drops and knives stall intermittently p. 333
Remove the belt cover and measure header drive belt spring tension; spring length should be 209 mm (8.25 in) per page 333. A stretched belt won't hold that spec under load, so replace it and recheck. Verify the tensioner pivot bolt moves freely and the idler pulley bearing spins without drag before reinstalling the cover and retesting at full PTO speed.
Manual Section: Product Feeding - 60Bevel gearbox runs hot and leaks oil after extended hours of seasonal use p. 23
Drain and refill the bevel gearbox: capacity is 800 mL (27 US fl oz) per page 23. Check the drain plug for metal particles; shavings beyond fine bronze dust mean internal wear requiring teardown. Replace all seals during removal, inspect bearings for pitting or race scoring, then refill to the 800 mL spec and verify the input shaft seal isn't weeping before returning to service.
Manual Section: Product Feeding - 60Header drifts down on its own after raising, won't hold working height between passes
Check the header lift circuit using the troubleshooting chart. Verify tractor hydraulic pressure reaches 104 bar (1500 psi). Inspect master and slave cylinder seals for internal bypass; a piston seal leaking past its bore allows the header to sink even with the control valve closed. Replace worn seals and bleed air from the circuit before retesting.
Manual Section: Hydraulic Systems - 35Frequently Asked Questions
How to reset the hydraulic system on Case IH DC133 DC163
To re-phase the header lift cylinders if they lift unevenly or not enough, you must bleed air from the hydraulic system. This involves loosening the hose swivel fitting at the upper end of the slave cylinder, running the tractor engine at a low idle, and moving the remote lever to the “raise” position until oil flow is visibly free of air bubbles, then tightening the fitting. This procedure is detailed in "Positioning cylinder - Bleed (35.410)".
Torque specs for rotary disc bolts on Case IH DC133 DC163
Various torque specifications apply to rotary disc bolts. Knife bolts should be torqued to 137 N·m (101 lb ft). Disc cover bolts should be torqued to 113 N·m (83 lb ft). The top cap center bolt requires a torque of 244 N·m (180 lb ft).
Torque specs for flail conditioner mounting bolts on Case IH DC133 DC163
When securing the front and rear of each hood liner section to the hood using 3/8 x 3/4 inch carriage bolts, washers, and flange nuts, tighten the nuts to the nominal torque specification.
What are the replacement specifications for Drive belts?
When replacing the header drive belt, tension should be adjusted by tightening the nuts on the spring tension rod until the spring length is 209 mm (8.25 in) from inside hook to inside hook. This ensures proper belt tension for optimal operation.
How quickly can I access this Case IH DC133, DC163, Disc Mower Conditioner?
Instant PDF download. You get the full 457-page searchable Service Manual immediately after payment. Open it on your laptop, tablet, or phone right in the shop.
Are there any print restrictions on this Case IH DC133, DC163, Disc Mower?
Yes. The PDF has no DRM restrictions, so print any page or section you need for your shop. Works with any standard printer.
Are there hydraulic schematics in this Case IH DC133, DC163, Disc Mower?
Full hydraulic system diagrams are included, covering circuits, valve locations, and hydraulic component specs for the Case IH DC133, DC163, Disc Mower Conditioner.
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