Doosan V158TI Operation & Maintenance Manual page 58

The hydraulic-type clutch is composed of forward main body, reverse main body, output shaft, and selector
valve.
The selector valve assembly installed on the external part is a device designed to control forward, neutral,
and reverse movements and also it can be remote-controlled. The oil pumped up at the pump supplies
hydraulic pressure for the clutch assembly, lubricating portions on gear and bearings, and cooling system.
But when assembling this hydraulic type clutch, use care so that it is aligned with the engine correctly.
5.1.2. Operation
1) Before operation
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Check the tightening bolts and nuts on the components as a whole for looseness.
●
Check the oil level with the oil level gauge.
(Run the engine at idle for a few minutes, then stop it before checking the oil level.)
●
Place the control lever in the neutral position before starting the engine.
2) Starting
●
Run the engine at idle for about 10 minutes.
●
Check for oil leaks, unusual sound, temperature, etc. while idling the engine.
●
While checking the clutch pressure, increase the engine rpm.
3) Driving and stopping
●
Check to see that the specified pressure is obtained when engaging the clutch. The pressure may
drop slightly at low engine rpm, but it does not affect the operation of the engine.
●
When attempting to change gears for forward or reverse movement, first put the engine rpm to idle.
●
The temperature of oil at operation must be 60 ~ 90°C.
●
When attempting to stop the engine, be sure to place the control lever in the neutral position.
4) Emergency bolt
The emergency bolt is designed to couple the clutch mechanically when the clutch indicates abnormal
condition or slip at clutch coupling operation. The reverse clutch pack has no emergency bolt. When using
the emergency bolt, first loosen the tightening bolts to remove the control block, tighten the 8 mm wrench
bolt on the forward disc pack using a 6 mm L-shaped wrench, then reassemble the control block in the
reverse order. Be sure to use this emergency bolt literally in case of emergency.
Main accessory parts
Snap
ring
Back
plate
- 52 -
Steel plate
Sintered plate
Emergency
bolt
Piston
EA7O6011