15 Ц 13 5
\ \
11 4
Relief valve assembly drawing cross section
No.
Description
Q’ty
1 Socket 1
2
Adjust pressure valve
1
3
Piston 1
4 Adjustment section 1
5
Main body
1
6 Adjustment valve
1
7 Adjustment spring 1
8 Nut
1
9
Adjustment valve spring
1
10 Adjust valve spring 1
11 O-ring 1
12 O-ring 1
13 O-ring 2
14
Backup ring
2
15
O-ring 1
Symbol
Overload relief valve setting pressure
MPa
OR1
Boom up 18.6+°49 at 5 L/min
OR2 Boom down
18.6+°49 at 5 L/min
OR3
Arm pull-off 18.6+°49 at 5 L/min
Pump
Main relief valve setting pressure
MPa
P1
MR1
16.2 +_°2 at 12.5 L/min
P2 MR2
16.29 at 12.5 L/min
p~ ■ j _
Notes on damages due to over-tightening
О Piping adapter on P/T port marked *
Tightening torque: 69+ON • m
О Other piping adapters
Tightening torque: 34-44N • m
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