VACUUM RELIEF VALVE (SERIAL NO. 318549-705569) NOTE: SOME MACHINES BELOW LISTED SERIAL NOS. MAY HAVE BEEN CHANGED TO CONFORM TO (SERIAL NO. 705570- ) SEE APPROPRIATE PAGE [01H03] HYDRAULIC SYSTEM 0360 850 (Low Ground Pressure Bulldozer) Crawler Bulldozer PC1885 in BULLDOZER 850