HYDRAULIC - PNEUMATIC - ELECTRICAL - ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER
SYSTEM
PRIMARY HYDRAULIC POWER SYSTEM - General specification
DESCRIPTION
Lift
Type
Position control, draft control and combined
position/draft control
Control
Independent lever(s)
Lift sensitivity adjustment
External four position lever on control valve
Response adjustment
Knob on control valve
Single-acting cylinder:
• Bore x stroke
90 x 110 mm
(
3.54 x 4.33 in
)
• Displacement
700 cm³
(
42.7 in³
)
Relief valve opening pressure
20464 - 19098 kPa
(
2968 - 2770 psi
)
Cylinder safety valve opening pressure
21001 - 21498 kPa
(
3046 - 3118 psi
)
Lift piston diameter
89.980 - 90.000 mm
(
3.5425 - 3.5433 in
)
Lift cylinder bore diameter
90.036 - 90.071 mm
(
3.5447 - 3.5461 in
)
Piston working clearance
0.036 - 0.091 mm
(
0.0014 - 0.0036 in
)
Cross shaft journal diameter:
• Right-hand
47.975 - 48.000 mm
(
1.888 - 1.890 in
)
• Left-hand
54.970 - 55.000 mm
(
2.164 - 2.165 in
)
Bushing fitted ID in lift body: (not reamed)
• Right-hand
48.100 - 48.184 mm
(
1.894 - 1.897 in
)
• Left-hand
55.100 - 55.184 mm
(
2.169 - 2.173 in
)
Cross shaft working clearance in bushings:
• Right-hand
0.100 - 0.209 mm
(
0.0039 - 0.0082 in
)
• Left-hand
0.100 - 0.214 mm
(
0.0039 - 0.0084 in
)
Cross shaft end float with lift arms in position
0.200 - 1.400 mm
(
0.0079 - 0.0551 in
)
Draft Control (if, applicable) :
• Draft Control Shaft OD
21.967 - 22.000 mm
(
0.865 - 0.866 in
)
• Shaft housing bore diameter on draft control shaft
22.020 - 22.072 mm
(
0.867 - 0.869 in
)
• Shaft clearance in body
0.020 - 0.105 mm
(
0.00079 - 0.00413 in
)
• Position control shaft diameter
13.973 - 14.000 mm
(
0.550 - 0.551 in
)
• Shaft housing diameter on Draft control shaft
14.016 - 14.059 mm
(
0.552 - 0.553 in
)
• Shaft clearance in body
0.016 - 0.086 mm
(
0.00063 - 0.00339 in
)
• Draft control lever pin and Draft control inner lever
hinge pin diameter at needle roller bearings
13.973 - 14.000 mm
(
0.550 - 0.551 in
)
• Control valve link arm and Draft control inner lever
ID at needle roller bearings
19.985 - 20.006 mm
(
0.7868 - 0.7876 in
)
Valve spool clearance in body
0.008 - 0.012 mm
(
0.00031 - 0.00047 in
)
Lift valve clearance in control valve body
0.008 - 0.012 mm
(
0.00031 - 0.00047 in
)
Valve spool return spring length:
• free
50.5 mm
(
1.988 in
)
• under
3.23 - 3.27 kg
(
7.1 - 7.2 lb
)
34 mm
(
1.34 in
)
Control Valve return spring length:
• free
44 mm
(
1.73 in
)
• under
10.5 - 11.7 kg
(
23.1 - 25.8 lb
)
29 mm
(
1.14 in
)
Response adjustment valve spring length:
• free
13 mm
(
0.51 in
)
• under
0.17 - 0.23 kg
(
0.4 - 0.5 lb
)
9.8 mm
(
0.386 in
)
Sensitivity adjustment valve spring length:
• free
14.5 mm
(
0.571 in
)
• under
1.61 - 1.79 kg
(
3.5 - 3.9 lb
)
11 mm
(
0.433 in
)
Check Valve return spring length:
• free
23.5 mm
(
0.93 in
)
84269855 20/04/2010
A.10.A / 4
Содержание Workmaster 75
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