Maeda MC815C - OPERATION - SECTION OVERVIEW

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4.10 TRAVELLING SPEED SWITCHING VALVE (JOINT WINCH BRAKE RELEASING
VALVE / WINCH 2 SPEED SWITCHING VALVE)
4.10.1 TRAVELLING SPEED SWITCHING VALVE APPEARANCE / SPECIFICATIONS
349S55200000
Port destination Port size
P Travel control valve pressure detection port PF1/4
A Left/right traveling motor PP port PF1/4
T Drain PF1/4
No. Name Qty. No. Name Qty.
No.
Name Qty.
1 Plug 1 5 Solenoid 1 9 Rivet 2
2 Body 1 6 Name plate 1 10 O-ring (1A-P10) 1
3 Compression spring 1 7 Missing number
11 O-ring (1B-P16) 1
4 Spool 1 8
Hexagon socket
head cap bolt
(M5×10)
2
Specifications
Service pressure 3.9 MPa (40 kgf/cm
2
)
Service flow rate 7 L/min (P→A passing flow volume)
Operating temperature range -20 to +90 ºC
Allowable
back
pressure
Static pressure 1.96 MPa (20 kgf/cm
2
)
Dynamic
pressure
0.98 MPa (10 kgf/cm
2
)