400 - LOADER, TWO-WHEEL DRIVE 15 HYDRAULICS, BULLDOZER, DROTT BUCKET AND COUNTERWEIGHTS Parts group 15 HYDRAULICS, BULLDOZER, DROTT BUCKET AND COUNTERWEIGHTS 15 HYDRAULICS, BULLDOZER, DROTT BUCKET AND COUNTERWEIGHTS . CLOSED-CENTER CONTROL VALVE (SERIAL NO. -4600) [A17] CLOSED-CENTER CONTROL VALVE (SERIAL NO. 4601- ) [A18] BOOM FOUR-WAY FLOAT VALVE (SERIAL NO. -4600) [A19] BOOM FOUR-WAY FLOAT VALVE (SERIAL NO. 4601- ) [A20] BUCKET FOUR-WAY REGENERATIVE VALVE (SERIAL NO. -4600) [A21] BUCKET FOUR-WAY REGENERATIVE VALVE (SERIAL NO. 4601- ) [A22] REPLACEMENT CLOSED-CENTER CONTROL VALVE [A23] REPLACEMENT BOOM FOUR-WAY FLOAT VALVE [A24] REPLACEMENT BUCKET FOUR-WAY REGENERATIVE VALVE [A25] RELIEF VALVE CARTRIDGE [B01] CONTROL VALVE LINKAGE [B02] BULLDOZER ATTACHMENT [B03] BUCKET LEVEL INDICATOR [B04] PRESSURE AND RETURN CIRCUIT [B05] OIL LINES AND FITTINGS - BOOM AND BUCKET CIRCUIT [B06] BUCKET CYLINDER [B07] BOOM CYLINDER (SERIAL NO. -4600) [B08] BOOM CYLINDER (SERIAL NO. 4601- ) [B09] COUNTERWEIGHTS AND MOUNTING BRACKET FOR THREE-POINT HITCH [B10] COUNTERWEIGHTS AND BRACKET [B11] COUNTERWEIGHTS AND BRACKETS FOR USE WITH BACKHOE SUB-FRAME [B12] AUXILIARY VALVE LINKAGE [B13] AUXILIARY VALVE FOR DROTT 4-IN-1 BUCKET [B14] OIL LINES AND FITTINGS - CONTROL VALVE TO DROTT 4-IN-1 BUCKET [B15] OIL LINES AND FITTINGS-DROTT 4-IN-1 BUCKET [B16] 5/8-YARD DROTT 4-IN-1 BUCKET [B17] CLAM CYLINDER FOR 5/8-YARD DROTT 4-IN-1 BUCKET [B18]