LOW TRIMMER VALVE REPAIR (Cont).
Inspect metal parts for cracks, scratches, wear, and other damage. Replace if damaged.
Dry cleaning solvent, P-D-680, Is toxic and flammable. Always wear protective goggles and
gloves, and use only In a well-ventilated area. Avoid contact with skin, eyes, and clothes, and DO
NOT breathe vapors. DO NOT use near open flame or excessive heat. The solvents flash point Is
1000F-1380F (380C-59°C). If you become dizzy while using cleaning solvent, Immediately get fresh
air and medical help. If solvent contacts eyes, Immediately wash your eyes and get medical aid.
Inspect oil passages in low trimmer valve body to ensure that they are clean. If necessary, work soft wire through
oil passages to remove foreign matter. Flush with dry cleaning solvent.
Compressed air used for cleaning or drying purposes, or for clearing restrictions, should never
exceed 30 psi (207 kPa). Wear protective clothing (goggles/shield, gloves, etc.) and use caution to
avoid Injury to personnel.
Dry oil passages In low trimmer valve body with compressed air.
Apply thin coat of hydraulic fluid to surface of
Install low trimmer valve (3), recessed end first,
into low trimmer valve body (1).
Install plug (4), primary spring (5), secondary
spring (6), valve stop (7), and plug (8).
Press inward on plug (8) and install new spring
Install low trimmer valve (see paragraph 6-12).