Yanmar YM276 Service Manual page 438

70-1528
Hydraulic Lift and Implement Hitches
DRAFT CONTROL SPRINGS
(Continued)
INSPECTION
-
1. Inspect all pins and the bores for wear or damage.
2.
Replace parts i f the clearance between pin and bore exceeds
1 m m (0.04 in.1.
3. Inspect outer spring for damage.
. . . . . . . . . . . . . . . . . . . . .
free ~ength
97.5
mm
(3.839
in.)
. . . . . . . . . . . . . . . . . . .
working
LO&.
82.5
mrn
at 3.70 KN
(3.248
in. at
832
lbr)
4.
Inspect inner spring for damage.
. . . . . . . . . . . . . . . . . . . . .
Free
Length
87.0
mm
13.425
in.)
. . . . . . . . . . . . . . . . . . .
Warking Load.
74.5
m m a t 1 . 1 1 KN
(2.933
in.
at
249
lbr)
A
-
K i m
Pin
B
-
Uppw
Link Pin Born
C -Pin
D -Pin Bore In Bolt
ASSEMBLY
1. install hinge pin (6) and upper link hinge
(A),
and tighten set
screw (CI t o 33 Nm (3.5 kgm) (24 ft-lbs).
2. Install inner and outer springs
(E)
between cylinder case rear
cover and upper link hinge.
A
-
Upper Link Hinps D-Bolt
B -Hingepin E -Spring.
C - S n S w F
-Nut
3.
Tighten nut
(F) until
spring length (A) is
92.5 mrn (3.64
in.)
4.
Tighten lock nut.
5.
I f the upper link hinge assembly was removed, replace gasket
and install the assembly and tighten cap screws t o
147
Nm
(15 kgm) (108 h-lbs).
6.
Install rear draft feedback rod.
7.
Lubricate upper link hinge pivot pin with grease.
A
-
Sprinp Mounting Dimmrion
SME276011J8304
YM276 and
276D
Kinornoto, P,;"*ed in Japan