Yanmar YM276 Service Manual page 424

70-15-14
Hydraulic Lift and Implement Hitches
UNLOAD VALVE
For location of unload valve, see photo.
REMOVAL AND INSPECTION
1. Remove plug from valve body.
2. Carefully pull out spring and poppet.
3 Inspect O-ring on plug
4. Inspect and measure spnng.
4
Free Length
. . . . . . . . . . . . . . . . . . . . .
40 rnm 11.575 in.)
WorklngLaad
. . . . . . . . . . . . . . . . . . . .
3 5 m m a t 4 . 9 N
(1.378 in.at 1.1 lbrl
-
5. Inspect poppet for damage and burr.
6.
Check oil clearance between case and poppet
Oil Clearance
. . .
. . . . . . . .
0.016 to 0.045 mm
(0.0006
to
0.0018
in.)
1. Plug
2. O - r i n ~
3. Spring
4.
Poppet
INSTALLATION
1. Install poppet, spring, plug and O-ring.
2. Tighten plug.
Torque
. . . . . . . . . . . . . . . . . .
30 Nm (3.0 kgm) (22 ft-lbs)
SME276OlllB1M
YM276
and 276D
Kinmoro. Prinrd inJapan