Yanmar EF-494T - For double action; front blade etc.

9 HYDRAULIC LIFT UNIT 9 HYDRAULIC LIFT UNIT
EF494T TM 06/2011 edition
197
9.3.2 For double action; front blade etc.
<Operation>
(1) Remove the plug (A). Insert and tighten the
screw plug (B) to switch inner hydraulic oil
flow.
(2) Remove plugs (D) on the right side of
hydraulic housing. Put the filter adapter (C)
to the return port (IN). Connect the
hydraulic valve of implement.
Port at the front side: OUT (to take out)
Port at the rear side: IN (to return)
(A) Plug, 3/4-16UNF
(B) Screw plug, PTF 1/4-18 (198245-42160)
(C-1) Filter adapter, 3/4-16UNF (1A7780-
45950)
(C-2) Gasket, 19x1.0 (23414-190000)
(D) Plug, 3/4-16UNF
NOTE:
Rear hitch implement can be controlled by
position control lever.
Keep plug (D) for future reuse.
IMPORTANT
Double action operation should be performed
using the implement’s operation lever.
CAUTION
 Takeoff of the external hydraulic pressure
should always be performed at the specified
place.
 Do not try to make a take off for the external
hydraulic pressure by modifying the lines
between the hydraulic pump and the
hydraulic cylinder case. Otherwise, it may
cause damage to the hydraulic pump.
 The reasons for this will be explained on the
following pages.