H3-S8
L2800, L3400, WSM
TRANSMISSION (HST TYPE)
(2) Checking Charge Relief Pressure
Checking Charge Relief Pressure
CAUTION
• When checking, park the machine on flat ground, apply the
parking brake.
NOTE
• Use a new transmission oil filter.
1. Remove the hex. socket head plug from P port.
2. Assemble long adaptor (07916-6083) and thread joint (07916-
50341) with the gasket between them.
3. Install the assembled long adaptor and thread joint to P port.
4. Install the cable, thread joint in relief valve set pressure tester and
low pressure gauge to threaded joint in order.
5. Place the range gear shift lever in neutral.
6. Run the engine at maximum speed.
7. Release the HST pedal to set in neutral, and measure the charge
pressure.
8. If the measurement is no within the factory specifications, check
charge relief valve (2).
(When reassembling)
• Apply liquid lock (Three Bond 1324B or its equivalent) to the hex.
socket head plug.
• Low pressure gauge is 2.9 MPa (30 kgf/cm
2
, 427 psi) full
scale.
(Condition)
• Engine speed : Maximum.
• Oil temperature : 45 to 55 °C
113 to 131 °F
W1029913
Charge pressure Factory spec.
0.49 to 0.78 MPa
5.0 to 8.0 kgf/cm
2
71 to 114 psi
(1) P Port
(2) Charge Relief Valve
(3) Poppet
(4) Spring
(5) Plug
Tractor Manuals Scotland - Please Do Not Copy
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