User Manual

Internal Expansion of H520 Couplings

customer service 800•355•1991

3Section 9

50 Ton Ram Instruction Manual

Slide the hose with the ferrule on over the shank

until the ferrule contacts the shoulder of the stem.

Make sure you align the ferrule with the second

mark from step 8. Make sure the pocket has been

maintained.

Important! If there is an insufficient pocket for the

rubber to displace into, damage may occur to the

stem, ferrule, and /or hose.

While holding the hose and ferrule firmly against the

stem shoulder, engage the ram cylinder by stepping

on the foot pedal (or depressing the “ON” button on

the remote control.) The internal expansion

operation is complete when the hose and stem

assembly is pushed completely over the internal

expansion plug. Release the foot pedal or “ON”

switch.

Note: If the gauge reads 10,000 PSI before internal expansion is complete, stop. Contact Dixon for further

assistance. During internal expansion never stand directly in front of the ram. Visually inspect the coupling.