Page 4-6
Troubleshooting
- 4.6 - Hydraulic Troubleshooting / Adjustment Procedures
SL20
4.6 H
YDRAULIC
T
ROUBLESHOOTING
Table 4-4: Troubleshooting Guide: Hydraulic Schematic
Component
F
u
n
ctio
n
Li
ft
Pl
a
tf
o
rm
L
o
we
r
P
la
tfo
rm
St
ee
r
R
ig
ht
S
te
e
r
Lef
t
D
ri
ve
For
w
a
rd
Dr
iv
e
R
e
ve
rs
e
C
reep
D
epr
e
ssi
on
M
e
cha
n
is
m
E
xt
en
d
D
epr
e
ssi
on
M
e
cha
n
is
m
R
e
tr
a
ct
Br
a
ke
s
Check Valve
X X
Steering Cylinder
X X
Lift Cylinder
X
Depression Mechanism
Cylinder
X X
Break Cylinder
X
Priority Flow Divider
X
X X X X X X X X
Suction Strainer
X
X X X X X X X
Return Filter
X
X X X X X X X
Drive Motors (2)
X X
Pump
X
X X X X X X X
Main Relief Valve
X
X X X X X X
Steering Relief
X X
Tank
Steering Right/Left Valve
X X
Lift Valve
X
Down/Emergency Lowering
Valve
X
Depression mechanism
Retract Valve
X
Depression Mechanism
Extend Valve
X
Forward/Reverse Valve
X X
Counterbalance Valve
X X X
X
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: ......