The transmission on the Gehl 50 MX Mix-All Feedmaker changed at serial number 4500, and this 44-page service manual (1843K) breaks down both builds, then widens to the mill drive, roller mill mounting, clutch, conveyor and molasses pump. Companion machines sold with the mixer are here too: mills, husker-shellers, the #55 crusher, the #600 and #610 swinging auger feeders and the #200 traveling feeder. Exploded parts illustrations fill most of the book, with lists split by serial number so the conveyor and mill drive breakdowns match the machine in your shed. Operating pages cover tractor drive, mixing, unloading and chain adjustment. Hold PTO speed at 540 RPM under load, and pack the mixer transmission with 3 lb. of pressure gun grease. With a feedmaker this old, there is usually nobody left to ask. Bookmarks take you straight to the traveling feeder or discharge blower pages, and the text layer finds any part name in seconds.
What's Inside This Gehl 50 MX Mix-All Feedmaker Manual
| System | Pages | Key Topics |
|---|---|---|
| Lubrication | 2 | Lubrication Instructions, Mixer, Swinging Auger Feeder, Husker-Sheller |
| Operating Instructions | 3-10 | Tractor Drive, Concentrate Hopper, Mixing Operation, Unloading Operation, Roller Mill, Mixer and Conveyor Drive Chain Adjustment, Inspection Door, Swinging Auger Feeder |
| Accessories | 11 | Mounting Instructions for Magnets, No. 50 Swinging Auger Feeder, No. 55 Swinging Auger Feeder |
| Frame | 12-13 | Hitch Jack, Fender Accessory |
| Tank and Conveyor | 14-15 | Replacement Parts Notes |
| Clutch | 16 | |
| Chain Drive | 17 | Universal Joint Replacement Kit |
| Transmission | 18-19 | |
| Conveyor | 20-23 | Conveyor Parts Illustration, Conveyor Parts List, Conveyor Extension Accessory |
| Dust Collector and Hopper | 24 | |
| Mill Drive | 25-27 | |
| Roller Mill Mounting | 28-29 | Roller Mill Mounting Parts Illustration, Roller Mill Mounting Parts List |
| Conveyor Drive | 30-31 | Chain Replacement Parts |
| Trough | 32-33 | Conveyor Cover Accessory |
| Support and Pipe | 34-35 | Discharge Pipe Accessory |
| Transmission and Drive | 36 | Transmission and Drive Parts Illustration, Transmission and Drive Parts List, Replacement Parts Notes |
| Mixer Drive | 37 | Universal Drive Service Parts Note |
| Hopper | 38 | Hopper Assembly Notes |
| Molasses Pump | 39 | Molasses Pump Assembly Notes |
| Universal Drives | 40-41 | Universal Drive Replacement Notes |
| Discharge Blower | 42 | Discharge Blower Assembly Notes |
| Traveling Feeder | 43-44 | Traveling Feeder Assembly Notes |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Mixer | ||
| Mixer Transmission grease capacity | 3 lb. | p. 2 |
| All Models | ||
| Mixer Transmission Grease Capacity | 3 lbs | p. 2 |
| Mixer Capacity | 2 Ton (82 bu.) | p. 4 |
| Tire Pressure | 48 lbs | p. 3 |
| PTO Operating Speed | 540 RPM | p. 3 |
| 50 MX | ||
| PTO speed | 540 RPM | p. 3 |
| Mixer capacity | 2 Ton (82 bu.) | p. 4 |
Gehl 50 MX Mix-All Feedmaker Common Problems This Manual Covers
Gehl 50 MX mill drive V-belts slipping or twisting on the sheaves under grinding load
Loosen the Mixer Drive Chain before touching the belts, as the caution on page 3 requires. Take up the belts with the set screws on the bearing mounting bracket. Clean grease, oil, rust and burrs from the sheave grooves, run a matched set, and make sure both shafts are parallel. Tighten until the belts deflect only slightly, then retighten the chain. Recheck tension after break-in.
Manual Section: Mill Drive p. 3Shear bolt on the sprocket flange and safety flange shearing repeatedly during grinding or mixing
Find and clear the overload before you restart. Filling past the 2 Ton (82 bu.) capacity packs the feed and overloads the drive. Realign the holes in the Sprocket Flange and Safety Flange following page 4. Install one 1/4 x 1 full threaded hex head cap screw with lockwasher and nut. Use only one bolt, or the safety device will not work properly. Hold the PTO at 540 RPM under load.
Manual Section: Operating Instructions p. 4Feed packing or bridging in the mixer tank with poor mixing showing at the inspection windows
Grind heavy feeds first unless they are high in moisture, and mix wet, heavy material into light, dry feed. When grinding hay and husked ear corn, grind 200 pounds of corn, then a bale of hay. Stay under the 2 Ton (82 bu.) capacity listed on page 4. Add molasses only after the tank is half full and pour it slowly. Never pour liquids into the concentrate hopper (page 4).
Manual Section: Mixing Operation p. 4Mixer and conveyor drive chains running slack or sprockets wearing out fast
Loosen the chain tightener stud, move the Sprocket toward the Chain, then tighten the stud nuts, following page 6. On the Main Drive Chain, take up on the Idler Spring Stud, but never extend the Idler Spring more than one inch. Page 8 warns that chains set too tight strain the shafts and bearings and wear the sprockets fast. After belt take-up, add the spare chain links bolted to the Concentrate Hopper Support Channel.
Manual Section: Mixer and Conveyor Drive Chain Adjustment p. 6Molasses attachment flow rate slowing down or discharge nozzles plugging while pumping into the tank
Clean the suction strainer and discharge nozzles, because buildup plugs them and slows the flow. Keep the molasses warmer than 60 degrees Fahrenheit, or dilute it with water to speed up the flow. The pump does not need priming. After each use, remove the cross pipe from the top of the tank and flush the pump and hoses with water, following page 10.
Manual Section: Molasses Attachment p. 10Universal drive joints wearing or failing early on the tractor PTO hookup
Check the PTO shaft to hitch point dimension. It should be 14 inches horizontally; correct the tractor drawbar if it is off. Keep the tractor lined up with the Mixer, because page 3 warns that severe angles increase the risk of universal drive damage. For transport, disconnect the Universal Drive from the PTO, set it in the Upper Drawbar Hitch and secure it with the Hold-down Chain.
Manual Section: General Operation p. 3Frequently Asked Questions
What are the recommended lubrication service intervals for the Gehl 50 MX Mix-All Feedmaker?
Grease all points at two-hour intervals during the first two days of operation and twice each day thereafter. If the unit is operated continuously for a long period, more frequent lubrication is recommended. p. 2
What are the fluid requirements and capacities for the mixer transmission on the Gehl 50 MX Mix-All Feedmaker?
The Mixer Transmission has a 3 lb. capacity of #1-1/2 pressure gun grease. Do not exceed these requirements. p. 2
What is the required tire pressure for the Gehl 50 MX Mix-All Feedmaker?
The machine should be maintained at a proper tire pressure of 48 lbs. p. 3
What is the required PTO shaft to hitch point dimension?
The PTO shaft to hitch point dimension should be 14 inches in the horizontal direction to maintain a standard ASAE tractor hook-up. p. 3
What is the mixing capacity of the Gehl 50 MX Mix-All Feedmaker?
The mixer has a capacity of 2 tons, which is equivalent to 82 bushels, 176,000 cubic inches, or 102 cubic feet. p. 4
How quickly can I access this Gehl 50 MX manual after buying?
All 44 pages arrive as one searchable PDF at checkout. Read it at the desk, then take the phone out to the machine.
Can I print this Gehl 50 MX manual?
Yes. No DRM, nothing blocks printing, so run off the pages you need on whatever printer you have.
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