UPPERSTRUCTURE / Pilot Valve IMPORTANT: Place a stand under bracket (11) and form an reaction force. If holder (7) bears the reaction force, a strong force acts on pin (35) and pin (35) may be deformed. 8. Place a stand under bracket (11). The hole insides of spring pins (12, 13) (2 used for each) in bracket (11) are in stepped-shape. The spring pin can only be removed in one direction. Remove spring pins (12, 13) (2 used for each) from bracket (11) at the same time by using special tool (ST 1237). Remove bracket (11) from pin (35). Do not remove spring pin (10) attached with bracket (11) unless necessary. The outside end of spring pin (10) has been crimped. 12.
The hole insides of spring pins (3, 4) (2 used for each) in cam (5) are in stepped-shape. Tap the bottom of cam (5) and remove spring pins (3, 4) (2 used for each) from cams (5) (2 used) at the same time by using special tool (ST 1237). As the holes of spring pins (3, 4) (2 used for each) are crimped, spring pins (3, 4) may feel tight when removing. 13. Remove pin (35) by using a bar and hammer. At the same time cams (5) (2 used) are also removed. Do not remove bushings (6) (4 used) in holder (7) unless necessary. When removing, tap bushings (6) (4 used) by using special tool (ST 7256). 14. Remove plugs (20) (2 used) from casing (23).
O-rings (19) (2 used) are removed with plugs (20) (2 used) together. 12, 13 : 5 mm 15. Remove plugs (21) (2 used) from casing (23). O-rings (22) (2 used) are removed with plugs (21) (2 used) together. 35 11 10 Crimped Here : 6 mm Stand W176-02-07-019 9. Remove socket bolts (9) (4 used) and spring washers (8) (4 used). Remove dampers (32) (2 used) and rubber seats (31) (2 used) from pin (35). O-rings (34) (2 used) are removed together. : 5 mm 10. Remove O-rings (33) (2 used) from pin (35). 11. Place holder (7) with the casing (23) mounting surface facing upward. W2-7-29