Lower the work group to the ground.
With the engine off, turn the key to the ON position and move both hydraulic control levers to relieve hydraulic pressure.
Support the boom with a chain hoist (Item 1) [Figure 20-21-1].
Remove the boom shield bolt (Item 1), washer (Item 2), spring washer and spacer (Item 3) [Figure 20-21-2].
Slide the shield (Item 1) off of the bracket (Item 2) [Figure 20-21-3].
Remove the snap ring (Item 1) [Figure 20-21-4] and washer.
Remove the rod end pin (Item 2) [Figure 20-21-4].
Lower the cylinder (Item 1) [Figure 20-21-5] until it rests on a portable work stand.
Start the engine and fully retract the cylinder rod (Item 2) [Figure 20-21-5].
Stop the engine. Relieve hydraulic pressure.
Remove the hose from the base end of the cylinder. Cap the hose (Item 1) [Figure 20-21-6].
Start the engine and retract the boom cylinder.
If there is any oil leakage from the base end fitting (Item 2) [Figure 20-21-6], remove the cylinder for repair or