18
45-053, REV. 5/18
Inspect the cylinder rod for:
1. Scratches or nicks on the rod surface.
2. Straightness of the rod.
3. Damaged threads.
Inspect the gland cap for:
1. Scratches or nicks in seal grooves.
2. Damaged threads or spanner wrench holes.
3. Excessive wear in bore.
Replace any component found to be defective.
5.6 Cylinder Assembly
1. Spray the piston, gland cap, and seals with wd40 or
other similar product to ease slipping of the seals in
place.
2. Note the direction of the seal on the piston. Improper
installation will result in poor performance. The cupped
side or O-ring side of the seal should be facing the
gland cap. (Figure 5-6)
O-Ring
Seal
Piston Nut
Cylinder Rod
Piston
Piston Follower
Wear Band
Figure 5-6, Piston Seal
3. Install the seals and wipers in the gland cap. Note the
direction of the seals. The cupped side or O-ring side of
the seal should be facing the piston. (Figure 5-7)
DETAIL A
A
Cylinder Rod
Seal
Retaining Ring
Bushing
Wiper Ring
O-Ring
Backup Ring
Gland Cap
Figure 5-7, Gland Cap Seal
4. Install the gland cap on the cylinder rod being ex-
tremely careful not to cut the rod seal on the threads
of the rod or rod shoulder. If available, use a sleeve or
plastic electrical tape to cover the rod threads.
5. Install the piston on the rod and tighten the locknut to
90 ft-lbs (0.56 UNF), 22 ft-lbs (0.75 UNF).
6. Spray the inside of the cylinder tube with lubricant to
ease inserting the rod and piston. Insert the rod and
piston into the cylinder tube. Tap the rod in with a rub-
ber mallet if resistance is encountered.
7. Tighten the gland cap using a spanner wrench.
