MMD Equipment 185S-6C2 - Manual (Page 50)

5.Periodic Inspection/Maintenance
5-17
5.5.26 Check o-ring and piston of pressure control valve
 After disassembling and cleaning pressure control valve, check O ring“1”,“2”and piston“4”.
When the rubber of these parts is found hardened, or damaged, replace them.
(For part number, see 5.4)
 When replacing it, contact directly us or distributor because it requires expert technical knowledge.
 After replacement, run the machine to check its function (See 5.5.26), air-leak or any disorder.
5.5.27 Check and confirm that drawbar is properly fixed with bolts properly,
according to specified tightening torque.
[ Every 3 months ]
 Check and confirm once every three months
that the bolts with which drawbar is fixed are
not loosened. (8 points)
 If it is found that specified tightening torque
of clamped bolts drops to a lesser value,
retighten them to correct specified value.
5.5.28 Check and confirm that the bolts with which undercarriage brackets are
fixed are properly tightened.
[ Every 3 months ]
 Check and confirm once every three months
that there is no looseness in tightening bolts.
(8 points)
 If it is found that specified tightening
torque of clamped bolts drops to a lesser
value, retighten them to correct specified
value.
Tightening torque：111 lb・ft
A100216
Tightening torque：77 lbf・ft
A100465