Jam nut on relief valve cartridge
is preset at factory and is not to
be removed. Damage to
equipment may result if jam nut
is tampered with or removed.
Remove relief valve (9) from
counterbalance valve assembly (1).
Relief valve is easily scratched or
dented. Use extreme care when
removing preformed packings
and backup rings from relief
valve or damage to equipment
Remove and discard preformed
packings (10) and (11) and backup rings
(12) and (13) from relief valve (9).
Drycleaning Solvent (P-D-680) is TOXIC and flammable. Wear protective goggles, face
shield, and gloves; use only in a well-ventilated area; avoid contact with skin, eyes, and
clothes, and do not breathe vapors. Keep away from heat or flame. Never smoke when
using solvent. The flashpoint for Type II Drycleaning Solvent is 140 degrees F (60 degrees
C) and Type III Drycleaning Solvent is 200 degrees F (93 degrees C). Failure to do so may
result in injury or death to personnel.
If personnel become dizzy while using cleaning solvent, immediately get fresh air and
medical help. If solvent contacts skin or clothes, flush with cold water. If solvent contacts
eyes, immediately flush eyes with water and get immediate medical attention.
Compressed air used for cleaning purposes will not exceed 30 psi (207 kPa). Use only with
effective chip guarding and personal protective equipment (goggles/shield, gloves, etc).
Failure to comply may result in injury or death to personnel.
Clean all metal parts in dry cleaning solvent.
Dry all parts with compressed air.
Inspect all parts for dents, cracks, pitting or stripped threads.
Replace all damaged parts.