Latest news

December 6, 2022:
Added: TM 9-7820-35 ROSS Steering Box
Added: M274 Initial Assessment - 1979 - Basically all the reasons to discontinue the Mule
Thanks to Mark Ciaglia

Parts:

Emery Mule Supply
John Emery
Phone - 262-567-5401
Phone - 262-567-5606
FAX - 262-567-5552
emerymulesupply@att.net

Mechanical Mules of America
Terry Markarian
Phone - 406-961-4024
Web Site

EASTERN SURPLUS
Phone - 1-855-332-0500
Web Site

Tools...

A pretty simple toolbox is all that's required to perform most maintenance on the Mule. While there are special tools to perform some very specialized work, they are not necessary. Some maintenance may require tools that are not common to everyones tool box but I have found they can be "borrowed" from your local parts store.

There are some homemade and/or modified tools others have made and many of them can be found on the G503 Forum.

General Tools

These are tools that you should probably have in your everyday toolbox. (Or close by.)

6 point sockets

A set of high quality 6 point sockets is essential. Many times bolts and nuts become frozen due to rust and corrosion. 6 point sockets are stronger and grip more surface area and won't round the bolts and nuts.

Line Wrenches

Sooner or later you will have to work on the fuel system: gas tank, fuel pump, carburetor. Standard wrenches will round the line connectors whereas line wrenches will grip all 6 edges and make disassembly much easier.

Grease Gun

There are quite a few grease points on the Mule. These should be attended to as prescribed in the Lube Order for your specific model. Although some points say monthly, if you don't use your mule heavily, you can do it less frequently. Use a high quality grease. That topic is covered in the EPA section.

Gear Oil Filler Spout

There are many fill holes to put gear oil in the drivetrain. Some of these are not easy to get direct access to. The Hopkins FloTool Gear Oil Filler Spout is a handy accessory to overcome this. It screws onto a quart or gallon container, has the ability to turn the flow on/off with a twist of the cap and includes a storage cap to keep the spout clean.

Spark Plug Socket

The Mule uses aviation type spark plugs and requires a deep, thinwall 7/8" socket. A good spark plug socket for this application is the ATS950. This is a true spark plug socket and holds/aligns the plug better than a standard deep well socket. Shop around for the best price.

Long Drive Pin Punch Set

Yearly maintenance should be performed on the hubs. Removing the lift ring requires a long drive pin punch to drive out the spring pin. A good set can be found at Harbor Freight.

Manual Impact Hammer

Gas tank, muffler, tow bar bracket, etc. bolts can be very difficult to loosen. They are phillips head screws and the easiest way to loosen them is to use a manual impact hammer. Striking the tool keeps the driver in the head while at the same time providing a jaring twist to loosen the bolt. They are fairly cheap and good to have as they can be used anywhere there is a stubborn fastner. The one from Harbor Freight is fairly cheap.

Propane Torch

A small hand held propane touch can be invaluable when working with stubborn fasteners. A small amount of heat can help release the rust to easy removal.

Nice To Have Tools

These are tools that will make your life easier when working on the Mule.

Thread Chaser

Many of the bolts and nuts that come off a Mule are rusty, grimy and corroded. Thread Chasers are designed not only to clean threads but reform or repair threads as well. Taps and Dies are made to cut threads and many times will either make threads loose by removing material or worse get cross threaded. A decent small set is available from Summit Racing (SUM-900199) but are available from other sources as well.

Transmission Shifter Seal Remover Installer

To properly remove and install the selector shaft seals in the transmission this tool is essential. Be aware there are 2 different length tools. Make sure to get the longer one as the shorter one won't reach the inner seal on the Hi/Low selector shaft. Search for SCHLEY PRODUCTS 96480 TRANSMISSION SEAL REMOVER/INSTALLER

Safety Wire Twisting Pliers

These are perfect when installing new boots. They twist the wire evenly and makes it easy to adjust the wire tension to get a good seal. Also use when installing safety wire when installing the drive shaft bolts to the brake drum.

Loaner Tools

There are many loaner tools that can be borrowed ( deposit required ) at you local auto parts store.

Pilot or blind bearing puller and slide hammer

This tool is invaluable for removing needle bearings in the drop axles. The one I use is like the one from Autozone. I just go and get the loaner along with a slide hammer and have it back the same day.