-10-
142664 - 5900 Series (24-November-2020)
Maintenance
REPAIRING A THREADED HEAD CYLINDER
Barrel
Rod
Assembly
Lock
Nut
Gland
End
Cap
Set Screw
Piston
Seal
Dual Seal
Wiper
Seal
U-Cup
Seal
Wear
Ring
Wear Ring
Piston
DISASSEMBLY
1. Loosen Set Screw and turn off end cap.
2. Carefully remove piston/rod/gland assemblies.
3. Disassemble the piston from the rod assembly
by removing lock nut.
NOTE
:
DO NOT
clamp rod by chrome surface.
4. Slide off gland assembly & end cap.
5. Remove seals and inspect all parts for damage.
6. Install new seals and replace damaged parts with
new components.
7. 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.
REASSEMBLY
1. Reinstall rod through end cap & gland assembly.
2. Secure piston to rod with lock nut. Torque lock nut
to proper value (refer to chart on previous page
for proper torque value).
3. Lube inside of barrel, piston seals, and gland seals
with hydraulic oil.
4. With cylinder body held gently in a vise, insert
piston, gland, end cap and rod combination using
a slight rocking motion.
5. Apply Loctite anti-seize before installing cylinder
end cap.
6. Torque cylinder end cap to 440 lb.ft (600 N.m).
7. Tighten Set Screw on end cap to 6 lb.ft (8 N.m).
Set Screw Style
Barrel
Rod
Assembly
Lock
Nut
End
Cap
Locking
Ring
Piston
O-Rings
Flat Washer
Rod Seal
Wear Ring
Rod Wiper Seal
Piston Seals
(Style may vary,
"5 Part Seal" shown)
Pin Assembly
Shoulder Bolt
REPAIRING A THREADED HEAD CYLINDER
DISASSEMBLY
1. Loosen Locking Ring and turn off end cap.
2. Carefully remove piston, rod and end cap.
3. Disassemble the piston from the rod assembly
by removing lock nut.
NOTE
:
DO NOT
clamp rod by chrome surface.
4. Slide off end cap.
5. Remove seals and inspect all parts for damage.
6. Install new seals and replace damaged parts with
new components.
7. 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.
REASSEMBLY
1. Reinstall rod through end cap.
2. Secure piston to rod with lock nut. Torque lock nut
to proper value (refer to chart on previous page
for proper torque value).
3. Thread lock ring fully onto barrel.
4. Lube inside of barrel and piston seals with
hydraulic oil.
5. With cylinder body held gently in a vise, insert
piston, end cap and rod combination using a
slight rocking motion.
6. Turn end cap fully against lock ring then back off
end cap to align ports.
7. Tighten Locking Ring against end cap using a
punch and hammer.
Locking
Ring Style
