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TM 9-2320-364-34-4
20-118
20-46. EXHAUST VALVE BRIDGE REPAIR (CONT).
b.
Cleaning/Inspection.
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.
(1)
Clean all parts in drycleaning solvent.
(2)
Dry all parts with compressed air.
(3)
Inspect exhaust valve bridges for cracks, chipping, scoring, or excessive wear. Replace defective bridges.
c.
Assembly.
NOTE
All 16 exhaust valve bridges are
installed the same way.
(1)
Position valve bridge (1) in soft-jawed vise.
(2)
Install screw (2) slotted end up in valve
bridge (1).
(3)
Position nut (3) on screw (2).
(4)
Remove valve bridge (1) from vise.
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