Take it easy on the magnetic drain plug
, NSN 4730-00-045-9769, on your HMMWV's geared hub when you remove or install it.
In addition, the large sight glasses and magnetic drain plug
are designed in features that provide longer bearing life for the 811 Series.
For instance, in oil and hydraulic systems, only a fraction of the fluid may have passed over the magnetic drain plug
, so the majority of the iron and metal contaminants contained in the fluids could not be trapped and removed.
Parallel push arms, front wing slide, oil reservoir with a minimum 40 gallon capacity with magnetic drain plug
The typical transmission/hydraulic system fluid service goes like this: Run the tractor to warm the fluids so they will flow, shut the tractor down, clean around the drain plugs and filters, drain the fluid, remove the old filter(s) (purchase an oil filter wrench if you have trouble getting the old filters off), install the new filter(s) (many are designed for hand tightening), clean any crud that's stuck to magnetic drain plugs
, reinstall the plugs, add new oil, and bleed air out of the hydraulic system, if required (your manual will let you know and show you how).