8006-05
TM 5-2420-230-24-1
ALL CYLINDERS EXCEPT THE BOOM CYLINDERS, 590 SUPER M DIPPER
CYLINDER, SWING CYLINDERS, AND QUICK COUPLER CYLINDER
Inspection
Disassembly
NOTE: Refer to illustration on page 6.
1. Clean the piston (4), gland (3), piston rod (6),
tube (1), hardened washer (8), and bolt (7) in
Clean the outside of the cylinder. If the hoses
cleaning solvent.
were removed with the cylinder, remove the hoses
2. Discard the parts that were removed from the
from the cylinder.
piston (4) and the gland (3).
1. Fasten the tube (1) in a vise or other holding
3. Illuminate the inside of the tube (1). Inspect the
equipment. Be careful to prevent damage to the
inside of the tube (1) for deep grooves and other
tube (1).
damage. If there is damage to the tube (1), a
2. Loosen and remove the lock screw (2) from the
new tube (1) must be used.
gland (3) and tube (1).
4. Check to be sure that the piston rod (6) is
3. Use the gland wrench shown on page 4 to
straight. If the piston rod (6) is not straight, install
loosen and remove the gland (3) from the tube
a new piston rod (6).
(1).
5. Remove small scratches on the inside of the
4. Pull the piston rod (6) straight out of the tube (1)
tube (1) with emery cloth of medium grit. Use the
to prevent damage to the tube (1).
emery cloth with a rotary motion.
5. Fasten the piston rod eye (5) in a vise and put a
6. Inspect the bushing (18) in the piston rod eye (5)
support below the piston rod (6) near the piston
and the closed end of the tube (1), replace as
(4). Use a shop cloth between the support and
required.
the piston rod (6) to prevent damage to the
7. Inspect the gland (3) for rust and clean and
piston rod (6).
remove rust as required.
6. Loosen and remove the bolt (7) and hardened
8. Inspect the gland end of the tube (1) for sharp
washer (8) that holds the piston (4). Use the
edges that will cut the gland O-ring (12), remove
torque multiplier shown on page 4 for bolts that
as required.
have a high torque value.
7. Remove the piston (4) from the piston rod (6).
8. Remove the gland (3) from the piston rod (6).
9. Remove the seal (9), backup ring (10), and wear
ring (11) from the piston (4).
10. Remove the O-ring (12), backup ring (13), wiper
(14), rod seal (15), buffer seal (16), and bushing
(17) from the gland (3).
Bur 6-41750
Issued 2-01
Printed in U.S.A.
