Page 3-14
Maintenance
- 3.13 - Hydraulic Power Unit
SL20
3.13 H
YDRAULIC
P
OWER
U
NIT
R
EMOVAL
NOTE:
If the hydraulic tank has
not been drained, suitable
means for plugging the hoses
should be provided to prevent
excessive fluid loss.
Figure 3-15:
Hydraulic Power Unit
1. Disconnect the negative battery
cable.
2. Mark, disconnect, and plug the
hose assemblies.
3. Mark and disconnect the motor
cables.
4. Loosen the capscrews and
remove the power unit from the
control module.
I
NSTALLATION
1. Place the power unit into the
control module. Torque the
mounting screws to 41 N-m (30 ft.lbs.).
2. Unplug and reconnect the hydraulic hoses. Reconnect the motor cables and negative bat-
tery cables.
3. Check the oil level in the hydraulic tank before operating the work platform.
3.14 H
YDRAULIC
D
RIVE
M
OTORS AND
H
UBS
Figure 3-16:
Hydraulic Drive Motor
R
EMOVAL
1. Park the work platform on firm
level ground then block the
wheels to prevent the work
platform from rolling.
2. Loosen the wheel lug bolts on
the front corner to be raised.
3. Use a 1.3 metric ton (1.5 impe-
rial ton) capacity jack to raise
the desired corner. Position
blocks under the raised corner
to prevent the work platform
from falling if the jack fails.
4. Remove the wheel lug bolts
and wheel.
5. Remove the cotter pin, slotted
nut, and hub. If necessary use
a wheel puller to remove the hub.
NOTE:
Before disconnecting
hoses, thoroughly clean off all
outside dirt around fittings.
(After disconnecting hoses and
before removing from vehicle,
IMMEDIATELY plug port holes.)
6. Tag, disconnect, and plug the hose assemblies to prevent foreign material from entering.
7. Remove the locknuts, capscrews, and drive motor from the motor mount.
2
1
3
4
5
1. Pump
2. Outlet Hose Fitting
3. Inlet Hose Fitting
4. Electric Motor
5. Control Module
1
2
3
4
5
6
7
8
9
10
1. Motor Mount
2. Drive Motor
3. Capscrew
4. Hub
5. Wheel
6. Wheel Lug Bolt
7. Slotted Nut
8. Cotter Pin
9. Hose Fitting
10. Lock Nut
Summary of Contents for SL20 Series
Page 1: ......
Page 10: ...Page viii Table of Contents List of Tables SL20 Work Platform NOTES ...
Page 12: ...Page 1 2 Introduction 1 2 General Description SL20 NOTES ...
Page 33: ...Page 3 11 Maintenance 3 11 Setting Hydraulic Pressures SL20 NOTES ...
Page 61: ...Page 5 7 Schematics Hydraulic Schematic SL20 Figure 5 2 Plugs 4 ...
Page 62: ...Page 5 8 Schematics SL20 NOTES ...
Page 65: ...Page 6 3 Illustrated Parts Breakdown Final Assembly SL20 Drawing 2 of 3 ...
Page 66: ...Page 6 4 Illustrated Parts Breakdown Final Assembly SL20 Drawing 3 of 3 ...
Page 69: ...Page 6 7 Illustrated Parts Breakdown Chassis Assembly SL20 Drawing 1 of 2 ...
Page 70: ...Page 6 8 Illustrated Parts Breakdown Chassis Assembly SL20 Drawing 2 of 2 ...
Page 73: ...Page 6 11 Illustrated Parts Breakdown Linkage Assembly SL20 ...
Page 75: ...Page 6 13 Illustrated Parts Breakdown Control Module Assembly SL20 ...
Page 79: ...Page 6 17 Illustrated Parts Breakdown Control Valve Assembly SL20 ...
Page 91: ...Page 6 29 Illustrated Parts Breakdown Label Kit Installation SL20 ...
Page 93: ...Page 6 31 Illustrated Parts Breakdown Label Kit German SL20 ...
Page 95: ...Page 6 33 Illustrated Parts Breakdown Label Kit French SL20 ...
Page 97: ...Page 6 35 Illustrated Parts Breakdown Label Kit Spanish SL20 ...
Page 102: ...Page 6 40 Illustrated Parts Breakdown SL20 NOTES ...
Page 103: ......