Workman HD Series Page 9 − 3 Hydraulic System
Specifications
NOTE: Vehicles that are equipped with the High Flow
Hydraulics Kit have two (2) independent hydraulic sys-
tems. Each of these hydraulic systems include a hydrau-
lic gear pump, reservoir, oil filter and controls.
Maintenance, troubleshooting and repair of each hy-
draulic system need to be performed independently.
Item Description
Workman HD Hydraulic Pump
Primary System (drive section) displacement (per rev.)
Positive displacement gear type pump
0.378 in
3
(6.2 cc)
Workman HDX & HDX−D Hydraulic Pump
Primary System (drive section) displacement (per rev.)
Positive displacement gear type pump
0.325 in
3
(5.3 cc)
Workman HDX & HDX−D Hydraulic Pump
High Flow Hydraulic System (end section) displacement (per rev.)
Positive displacement gear type pump
0.519 in
3
(8.5 cc)
Primary System Relief Pressure 1800 PSI (124 Bar)
High Flow Hydraulic System Relief Pressure 2000 PSI (137 Bar)
Steering Control Valve Eaton Steering Unit, Series OSPM
Steering Cylinder 2WD: Bore = 1−5/8” (41.3 mm), Stroke = 6−1/8” (15.6 cm)
4WD: Bore = 1−5/8” (41.3 mm), Stroke = 4−11/16” (11.9 cm)
Lift Control Valve Three position control valve
Spring return to neutral
Ball checks to maintain load
Lift Cylinder Bore = 1.5” (38 mm), Stroke = 16.25” (41.3)
Primary System Hydraulic/Transaxle Oil Dextron III ATF
High Flow Hydraulic System Hydraulic Oil High Viscosity Index/Low Pour Point Anti−wear Hydraulic Fluid,
ISO VG 46
Primary System Capacity (transaxle) 7.5 U.S. quart (7.1 Liter)
High Flow Hydraulic System Capacity (reservoir) 4 U.S. gallon (15 Liter)
Primary System Filter Automotive, 10 micron spin−on cartridge type
25 PSI by−pass valve
100 mesh strainer in transaxle
High Flow Hydraulic System Filter Automotive, 10 micron spin−on cartridge type
25 PSI by−pass valve
100 mesh strainer in reservoir
Hydraulic
System
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