Komatsu wa470 5 wheel loader service repair manual sn:70001 and up

Page 79

STRUCTURE AND FUNCTION, MAINTENANCE STANDARD

TRANSMISSION CONTROL VALVE

WA470-5 Serial No. : (Transmission No. 110530) and up WA480-5 Serial No. : (Transmission No. 110530) and up

A: B: C: D: E: F : G: H: J :

2nd clutch oil pressure detection port 3rd clutch oil pressure detection port 1st clutch oil pressure detection port 4th clutch oil pressure detection port R clutch oil pressure detection port F clutch oil pressure detection port Lock-up clutch oil pressure detection port Main relief oil pressure detection port Torque converter relief oil pressure detection port

K : Parking brake oil pressure detection port

WA470-5

1. 2. 3. 4. 5. 6. 7. 8. 9.

ECMV (for 2nd clutch) ECMV (for 3rd clutch) ECMV (for 1st clutch) ECMV (for 4th clutch) ECMV (for R clutch) ECMV (for F clutch) ECMV (for lock-up clutch) Parking brake solenoid valve Main relief, torque converter

relief valve 10. Last-chance filter

10-40-1 (12)


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