All wheel valves are
disassembled the same way.
Remove four screws (1), poppet end cover
(2), spring (3), preformed packing (4), and
poppet (5) from wheel valve (6). Discard
four screws, spring, preformed packing, and
Remove four screws (7), pilot end cover (8),
and diaphragm (9) from wheel valve (6).
Discard four screws and diaphragm.
Remove piston (10) from wheel valve (6)
and preformed packing (11) from piston
(10). Discard preformed packing.
Remove and discard check valve (12) and
breather (13) from wheel valve (6).
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 with drycleaning solvent.
Dry all metal parts with compressed air.
Clean rubber parts with clean, dry cloth.
Inspect all metal parts and valve seats for cracks, wear, nicks, silt buildup, stripped threads and other signs
Replace all damaged parts.