1 Hydraulic System
24
2 Installation of Hitch Control Valve
1. Set the clearance between the valve plate and valve
body to 10mm {0.394in}.
2. Make sure that the clearance "Z" between the
hydraulic housing and link assembly is within 0.58
to 2.0mm {0.023 to 0.079in}.
3. Adjust the measurement of the center of valve
mounting bolt "X" and arm pin "Y" for level link to
137 ± 0.3mm {5.394 ± 0.012in} with W nut.
3 Assembly of Hydraulic Piston Rod
Wash the hydraulic equipment parts and assemble with
caution for entry of foreign matters.
Apply some oil to the O-ring, bush and seal for assembly.
1. Toward the spilt part of the bush for piston rod as
shown in the figure for mounting.
Reference) Apply some lubricant, MoS2-P, to
the bush internal diameter (pin oscillating part)
and oscillating part of the piston and piston
rod.
2. Toward the spilt part of the bush (left and right) for
lift shaft as shown in the figure for mounting.
1) Toward the spilt part of the bush as shown in the
figure for mounting.
2) The depth of press fit for bush shall be 13.5mm
{0.531in} on both lift and right.
Reference) Apply some lubricant, MoS2-P, to
the spline part of the shaft.
CAUTION
Make sure the O-ring is attached before
assembly.
P
C
P
O
1370.3mm
{5.394
0.012in
}
10mm
{0.079
in
}
(109.5mm
{4.311
in
})
X
Y
Z
Hydraulichousing
Linkassembly
Valvebody
Valveplate
GZ3W31-025
GS7W4-058
Splitpart
7
Oil
13.5mm
{0.531in}
13.5mm
{0.531in}
A-A
GZ3W31-026A
Powerarm
Liftshaft
www.mymowerparts.com
K&T Saw Shop 606-678-9623 or 606-561-4983
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