Lit. No. 30118, Rev. 00
June 15, 2020
19
RAM SEAL INSTALLATION
HYDRAULIC SYSTEM
1. Lubricate the O-rings with hydraulic
fl
uid
before assembly.
2. Assemble the gland components as shown,
then lubricate them with hydraulic
fl
uid.
3. Remove the piston from the rod and assemble
the piston components as shown.
4. Assemble the gland to threaded end of the rod.
Do not slide the gland over the cross hole in
the rod.
5. Reassemble piston to rod and tighten the nut:
• 90–100 ft-lb for angle ram
• 90–100 ft-lb for lift ram.
6. Assemble the O-ring into the groove on the
rod. Use tape or other protection on the
threads.
7. Apply a bead of medium-strength threadlocker
all around the threads of the gland.
8. Lubricate the piston seals and the inside of the
cylinder.
9. Press the rod assembly into the cylinder and
tighten the gland nut:
• 120–150 ft-lb for the angle ram
• 30–40 ft-lb for the lift ram.
Nut
Groove
in Rod
Rod
Gland
Piston
Cylinder
Seal Position
Gland
Back-Up Ring
Wiper
Seal
O-Ring
Wear Ring
Inner
Backing
Ring
Outer
Seal
Wear
Ring
GLAND SECTION
PISTON SECTION
