UPPERSTRUCTURE / Pump Device Disassemble Regulator IMPORTANT: The same type regulator is installed to pumps 1 and 2. As these characteristics are different each other, do not confuse them. These procedures are for the pump 1 regulator. 1. Remove socket bolts (34) (6 used). Remove the regulator from the pump casing. : 5 mm 2. Remove socket bolts (24, 25). Remove valve casing (27) attached with proportional pressure reducing valve (28) from casing (1). : 6 mm 3. Remove socket bolts (7) (4 used). Remove cover (6) from casing (1). : 5 mm 4. Remove Pf sleeve (21) and pilot piston (20) from casing (1). 5. Remove support plug (10) from casing (1). Remove feedback lever (17). : 6 mm 6.
Remove spool (18) and sleeve (19) from casing (1). 7. Remove adjusting disc Q (4), pilot spring (3) and spring seat (2) from casing (1). NOTE: Remove adjusting disc Q (4) by using the bolt (M4). 8. Remove seat (31), steel ball (32) and stopper (33) from casing (1). W2-4-41