Checking High Pressure Relief Valve Pressure; operation more than 10 seconds.- Page 350

TRANSMISSION

L3560, L4060, L4760, L5060, L5460, L6060, WSM

3-S31

Checking High Pressure Relief Valve Pressure

 CAUTION

• When checking, park the machine on flat ground, apply the

parking brake.

1. Remove the hex. socket head plug from 

P1

 or 

P2

 port. (

P1

 is for

forward and 

P2

 is for reverse.)

2. Assemble  adaptor 

C

  (07916-50371)  and  threaded  joint

(07916-50341) with the gasket between them.

3. Install  the  assemble  adaptor 

C

  and  threaded  joint  to 

P1

(forward) or 

P2

 (reverse) port.

4. Install the cable, threaded joint in relief valve set pressure tester

and high pressure gauge to threaded joint in order.

5. Check to see that parking brake is applied.

6. Run the engine at rated speed.

7. Place the range gear shift lever in 

H

 position.

8. Depress  the  HST  pedal,  and  measure  the  check  and  high

pressure relief valve pressure.

9. If the measurement is not within the factory specification, check

the check and high relief valve assembly.

IMPORTANT

• Measure quickly so that the relief valve may not be in

operation more than 10 seconds.
NOTE

• High pressure gauge is 40 MPa (400 kgf/cm

2

, 5800 psi) full

scale.

(When reassembling)

• Install the hex. socket head plug to the port with O-ring.

9Y1210824TRS0190US0

Check and high relief 

pressure 

(Oil temperature at 40 to 

60 °C (104 to 140 °F))

Factory specification

33.3 to 36.3 MPa

340 to 370 kgf/cm

2

4830 to 5260 psi

(1)

P1

 Port (for Forward)

(2)

P2

 Port (for Reverse)

KiSC issued 03, 2016 A