Description

GEHL 50 MX Service Manual – Factory OEM Specifications

If you’ve ever had a feed mixer lock up because you used the wrong grease grade, you know the feeling. I’ve seen it. The manual that came with the machine is long gone, so you grab some aftermarket PDF and hope. That’s how you end up with a $2,000 gearbox rebuild. With the GEHL 50 MX Service Manual – 44 pages of factory-issued procedures – you get the exact specs that came off the line in West Bend, Wisconsin. No interpretation, no guesswork. This is the document GEHL wrote for their own technicians.

Servicing the No. 50 MX Mixer – Factory Procedures

GEHL built the 50 MX Mix-All to handle heavy feed grinding and mixing. The manual walks through general operation: keep the machine level, keep guards in place, maintain tire pressure at 48 lbs (page 3). That number matters – too low and the PTO alignment shifts, too high and the ride beats up the frame. The service section covers disassembly of the mixing augers, conveyor bearings, and the main drive sprocket bushing. Every step references the original factory part numbers, not a cross-reference that might be off by a thread pitch.

Tractor Drive: Why 14 Inches Matters

Standard ASAE hookup is one thing. The 50 MX manual specifies the exact horizontal distance from the PTO shaft to the hitch point: 14 inches. Page 3 says it. If you skip that measurement, you’ll bind the universal joint and chew up splines inside 50 hours. The manual also tells you to disconnect the universal drive during transport and fasten it with the hold-down chain. That’s the kind of detail aftermarket summaries leave out. For more skid-steer and compact equipment repair procedures, see the GEHL Z45 450Z 2012 Service Manual – Factory OEM Specifications.

Lubrication: Grease Grades and Capacities – Page 2

Page 2 lays out the entire lubrication schedule. It’s not a generic chart. The mixer transmission takes 3 lbs of #1-1/2 pressure gun grease – not #2, not EP. The swinging auger feeder has separate intervals for conveyor bearings and clutch sprockets. The Husker-Sheller transmission requires one quart of SAE 140 black gear lube. Over-greasing the clutch sprockets is a problem; the manual says “Do Not Over Grease” in bold. That warning alone can save you a clutch pack replacement. Need a more compact loader manual? The GEHL SL5635, SL6635 Service Manual – 198-Page Factory OEM covers that platform.

Mill Drive Belt Adjustment – Step by Step

V-belt tension and alignment get their own section on page 3. The instruction is specific: loosen the mixer drive chain first, then adjust the belt using set screws on the bearing mounting bracket. Belts at correct tension deflect only slightly. Then retighten the mixer chain. Skip that order and you’ll overstress the belt or throw a chain. The manual includes a caution note – not a suggestion, a caution. For larger loader models, the GEHL SL7810E 2006 Service Manual – OEM Skid-Steer Repair gives the same level of factory detail.

44 Pages: What This Manual Covers and Doesn’t

Forty-four pages sounds short. But every page is dense. You get the mixer section, the swinging auger feeder section, and the Husker-Sheller attachment. The manual also points you to separate service manuals for the feeder attachment and the hammer mill – it doesn’t pretend to cover everything. That’s honest documentation. The parts breakdown uses GEHL’s own form number (1843K). You can order the exact fastener from a dealer if you need to. No guessing whether a bolt is grade 5 or 8.

Does this manual cover the Husker-Sheller attachment?

Yes. The lubrication section specifies SAE 140 gear lube for the Husker-Sheller transmission, and the TOC includes that attachment’s adjustment procedures.

What torque specs are listed?

The manual does not publish a standalone torque table. Torque values are given inline where bolts are critical – for example, wheel lug nuts and PTO mounting bolts. If you need a full torque chart, you’ll find it referenced in the attachment sub-manuals.

Can I use this manual for the 50 MX with a different feeder?

Yes. The base mixer section applies regardless of feeder. The swinging auger feeder instructions are separate. If you have the standard conveyor feeder, the lubrication and drive specs are the same.

Is this a reprint or a copy?

This is the original factory PDF scanned from the GEHL print. You get the same content as the paper manual that shipped with the machine. The Manual Transmission section references standard SAE lube types, which match the OEM specs. Also check the Manual Transmission guidelines for PTO compatibility.

Every time I crack open a manual like this, I find something I forgot – like the 48-lb tire pressure or the 14-inch hitch offset. Those numbers keep the machine running. If you’re maintaining a GEHL 50 MX, don’t rely on a third-party rewrite. Access the Factory Manual and get the exact procedures that keep the gearbox alive and the belts tracking straight.