TM 10-3930-675-24-2
HYDRAULIC SYSTEM VALVE MAINTENANCE - CONTINUED
0263 00
EXTENSION CYLINDER OVER-CENTER VALVE REMOVAL
1.
Lower and retract boom fully (TM 10-3930-675-10).
2.
Remove cover from rear of boom (WP 0100 00).
3.
Remove tiedown straps and clamps, as needed. Discard tiedown straps.
4.
Remove hose (60) and O-ring (61) from over-center valve (68). Discard O-ring.
5.
Remove four screws (62), flange (63), hose (64), and O-ring (65) from over-center valve (68). Discard O-ring.
NOTE
Refer to Foldout, FO-12 as a guide to remove hoses and fittings from valve.
Note position of tiedown straps and clamps to aid in installation.
6.
Remove four bolts (66), washers (67), and valve (68) from extension cylinder (69).
7.
Remove fitting (70) from valve (68).
60,61
62
63
64,65
66,67
70
68
69
434-40207
EXTENSION CYLINDER OVER-CENTER VALVE INSTALLATION
NOTE
hydraulic hoses and applying proper torque.
Perform step 1 to install fittings removed from old valve, if new valve is being installed.
1.
Install fitting (70) on valve (68).
2.
Install valve (68) on extension cylinder (69) with four bolts (66) and washers (67). Tighten in accordance with WP 0286
3.
Lubricate new O-rings (65).
4.
Install new O-ring (65), hose (64), and flange (63) on over-center valve (68) with four screws (62).
5.
Lubricate new O-ring (61).
6.
Install new O-ring (61) and tighten hose (60) on valve (68).
0263 00-12
