89
Low pressure relief valve
1. Untighten the hose band, and disconnect the oil
hose to the cylinder bottom of the hydraulic
cylinder at the oil filter side.
2. To check the low pressure relief valve, connect the
0–3 MPa {0–30 kgf/cm
2
} pressure gauge to the oil
pipe and secure with hose band.
3. Start the engine and increase the engine speed to
full throttle and read the pressure.
The low pressure relief setting is 0.49 MPa {5
kgf/cm
2
}. If the pressure is low, replace the low
pressure relief valve and spring. (Refer to HST unit
disassembly)
445V
446V
447V
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