make will sound" In relief . , bullion can be sensed 1f touched the hydraulic pipe . R w chm. rse le control valve in neutral w1th the li arm in the lower e arm n - (Cushion by air can be felt.) 5) TM 01'] will be dirty. 6) 2716 pointer of the pressure gauge will swing largely. Note 2 Phenomenon at oil lter clogging 1) Hydraulic operation will become uneven and start stopping. 2) Men excessive clogging, it will not function at all. 3) It will function at 1nit1a1 stage of operat1on but stop functioning when foreign matters in the 011 start dogging If stopped the engine and restarted the operat1on after a while, it will function but W111 stop short1y. 1711s 15 because of the precipitation of clogged matters in the lter. It is often misunderstood as a troub1e caused by 'm the futet. of the hydraulic pressure due to its correspondence to the increase of the hydraulic pressure.