Clean all parts in solvent and dry with compressed air.
Inspect all parts for wear or damage. Replace any worn or damaged parts.
Always install new seals and O-rings. Lubricate all seals and O-rings with clean hydraulic fluid before installation.
Use the following tools to assemble the cylinder:
MEL1396 โ Universal Seal Expander
MEL1033 โ Rod Seal Installation Tool
MEL1396-2 โ Piston Ring Compressor
MEL1075 โ Adjustable Gland Nut Wrench
MEL1075-1 โ Standard Pins
Install the new seal on the tool and slowly stretch it until it fits the piston [Figure 20-25-17].
Allow the seal to stretch for 30 seconds before installing it on the piston.
Install the seal (Item 1) [Figure 20-25-18] on the piston.
Use a ring compressor to compress the seal to the correct size. Leave the piston in the compressor for about three minutes [Figure 20-25-19].
Install the rod seal on the rod seal tool [Figure 20-25-20].
NOTE: During installation the spring side of the seal must be toward the inside of the cylinder.
Rotate the handles to collapse the rod seal [Figure 20-25-20].
Install the rod seal in the head [Figure 20-25-21].
Install the wiper seal with the wiper (Item 1) [Figure 20-25-22] toward the outside of the head.
Install the O-ring (Item 1) [Figure 20-25-23].
Install the seal (Item 2) [Figure 20-25-23].
Install the head (Item 1) and piston (Item 2) [Figure 20-25-24] on the rod.
NOTE: Clean and dry the rod threads. Install a NEW NUT with pre-applied Loctiteยฎ.
Grease the piston where the nut contacts the piston. Do not get grease on the threads.
Provide an adequate support for the cylinder before tightening.
Install the nut (Item 3) [Figure 20-25-24].
Tighten the nut to 1491 Nโขm (1100 ft-lb) torque.
Install O-ring (Item 1) and plug (Item 2) [Figure 20-25-25].
Tighten the plug to 50 Nโขm (37 ft-lb) torque.
Put the base end of the cylinder in a vise.
Insert the adjustable gland nut wrench into the two holes (Item 1) [Figure 20-25-26] to tighten the head. Head to be torqued until flush with the end of the housing.
