-9-
142664 - 5900 Series (24-November-2020)
Maintenance
11. b) Tighten the band clamp to ensure the wire
ring is fully seated. Then, loosen the clamp
approx. 1/2 a turn to allow band clamp to slide
during fi nal assembly.
17
b) Pull out Head for
Wire Ring Groove
a) Extend Rod
Forward
c) Install External
Wire Ring
9. a) Inspect and replace all of the seals with new
components.
b) Inspect the inside of the cylinder barrel,
piston, rod and other polished parts for burrs
and scratches. Smooth areas as needed with an
emery cloth.
c) During re-assembly of head/gland assembly,
leave the outer O-Ring Dual Seal loose on the
rod to re-install at a later step.
10. Replace piston and torque the locknut to
required value. (Refer to chart below)
11. a) Install the supplied band clamp to compress
the inner wire ring on the head/gland assembly
so it will fi t into the tube.
Note
: Make sure the cam of the band clamp is
not overtop of the gap in the ring.
12. Lubricate the cylinder tube and piston seals.
13. Insert the piston into the tube. Tap the cylinder
head into the tube until the clamp slides over
and the inner wire ring is inside the tube.
16
Flush with edge
16. Tap the head the rest of the way until the end is
fl ush with the tube.
IMPORTANT
: The head/gland must be inserted until
it is fl ush with the tube to allow the inner wire ring to
snap into its seated position in the internal cylinder
groove. Failure to insert the head fl ush as shown will
result in the head and rod assembly coming out of
the tube when pressure is applied to the cylinder.
17. Pull the rod out to expose the external wire ring
groove in cylinder head, and then install the
external ring.
18. Before using the cylinder, ensure that you double
check your work.
14. Loosen the clamp and remove.
15. Install the O-Ring Dual seal.
13
14
15
External Ring
Inner Ring
LOCKNUT SIZE
(PISTON)
TORQUE VALUE
3/8 - 24 UNF
25-30 lb.ft (35-42
N.m
)
1/2 - 20 UNF
40-60 lb.ft
(55-80 N.m)
5/8 - 18 UNF
95-105 lb.ft (130-140
N.m
)
3/4 - 16 UNF
175-225 lb.ft
(240-305 N.m)
7/8 - 14 UNF
200-275 lb.ft (270-370
N.m
)
1 - 14 UNF
300-380 lb.ft
(405-515 N.m)
1 1/8 - 12 UNF
400-500 lb.ft (540-675
N.m
)
1 1/4 - 12 UNF 500-600 lb.ft
(675-810 N.m)
1 1/2 - 12 UNF
700-800 lb.ft (950-1085
N.m
)
1 3/4 - 12 UNF 800-900 lb.ft
(1085-1220 N.m)
16
Inner Wire Ring is pushed back
into the internal
Tube Groove
8. Remove locknut, piston and head from rod.
Wiper Seal
Wear Ring
Wear Ring
Locknut
Piston
Head/Gland
U-Cup Rod Seal
Piston Seal (2pcs)
O-Ring
Dual Seal
O.D. Threads =
Locknut Size
