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How to Service Grease Fittings

Grease fittings (also known as Zerk fittings) connect to a grease gun--a simple way to deliver grease into bearings on the MK-V.

Cleaning and servicing grease fittings is an important maintenance task for Monarch Tractor MK-V owners and operators. Grease fittings (also known as Zerk fittings) connect to a grease gun, providing a simple way to deliver grease into bearings and other moving systems. Grease fittings should be cleaned and serviced after every five hours of tractor use, or even better, daily.

In addition to grease fittings on the underside of the MK-V, on the lower arms of the 3-Point hitch, there are three grease fittings on the bottom left arm and three on the bottom right arm.

Here’s what you’ll need to safely complete this task:

  • Safety equipment required by your job site
  • Grease gun
  • Clean cloth

The dirtier the conditions you operate the tractor in, the more often you should clean and lubricate grease fittings.

To clean and lubricate grease fittings:

  1. Starting on the front axle, identify the grease fittings. One fitting is located on the bottom of the transaxle, accessible through a hole (shown left). The second fitting is accessible behind the right tractor (shown right).
  2. Use a clean cloth to wipe clean the grease fittings. It’s important to keep dust out of grease fittings to avoid clogs, which can prevent grease from reaching the bearing properly.
  3. Connect a grease gun to each fitting and push grease until you see and hear a bit of grease escape from the axle joint. Wipe off any excess grease.
  4. Next, walk to the back of the tractor. Wipe clean the three grease fittings on the left and the three grease fittings on the right 3-point lower arms, where the arm meets the tractor transaxle.
    IMPORTANT: Early production models of Monarch MK-V tractors have only two fittings on the left and two fittings on the right.
  5. Connect a grease gun to each fitting and push grease until you see and hear a bit of grease escape from the axle joint. Wipe off any excess grease.