American-Lincoln SC7740 Installation and operation manual

READ THIS BOOK
All directions given in this book are as seen from the operator's position at the rear of the machine.
For new books, write to: American-Lincoln, Inc., 1100 Haskins Road, Bowling Green, Ohio 43402
This book has important information for the use and safe operation of this machine. Failure to read this book
prior to operating or attempting any service or maintenance procedure to your machine could result in injury to
you or to other personnel; damage to the machine or to other property could occur as well. you must have
training in the operation of this machine before using it. If you or your operator(s) cannot read English, have
this manual explained fully before attempting to operate this machine.
Si Ud. o sis operadores no pueden leer el Inglés, se hagen explicar este manual completamente antes de tratar
el manejo o servicio de esta máquina.
Part No. 2-86-00299 2002 Printed in the
®
American-Lincoln USA
®
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Operator's
Manual &
Parts List
SC7740
Sweeper/
Scrubber
Before Serial Number 691147
American-Lincoln
®

American-Lincoln®1-1
SC7740
Specifications .......................................................................................................................................... 1-4
Machine Dimensions ............................................................................................................................... 1-7
Standard Hardware & Torque Values .................................................................................................... 1-8
Hydraulic Torque Requirements............................................................................................................. 1-9
Decimal - Metric Conversion Table ........................................................................................................ 1-10
Machine Preparation............................................................................................................................... 1-11
Preparing The Machine For Operation ................................................................................................. 1-11
Safety Instructions .............................................................................................................................. 1-12
Operations of Controls and Gauges ....................................................................................................... 1-15
Left Side Console .................................................................................................................................... 1-15
Light Switch ........................................................................................................................................ 1-15
Dust Control/Filter Shaker Switch........................................................................................................ 1-15
Main Broom/Side BroomSwitch........................................................................................................... 1-15
Scrub Deck Switch.............................................................................................................................. 1-15
Engine Speed Switch .......................................................................................................................... 1-16
Squeegee/Vac Switch ......................................................................................................................... 1-16
Hopper Switch..................................................................................................................................... 1-16
ESP Switch (Optional) ........................................................................................................................ 1-16
Key Switch.......................................................................................................................................... 1-17
Hour Meter .......................................................................................................................................... 1-17
Fuel Gauge/LP Indicator Light ............................................................................................................. 1-17
Back-UPAlarm Switch (Option)........................................................................................................... 1-17
Solution Control Knob.......................................................................................................................... 1-17
Warning Bank ..................................................................................................................................... 1-18
Engine Temp Light............................................................................................................................... 1-18
Engine Oil Pressure Light.................................................................................................................... 1-18
Charging System Light ........................................................................................................................ 1-18
High Recovery Light ............................................................................................................................ 1-18
Low Solution Light ............................................................................................................................... 1-18
Hopper SafetyArm .............................................................................................................................. 1-19
--To Engage SafetyArm....................................................................................................................... 1-19
Seat Position Adjustment .................................................................................................................... 1-19
Directional Control Pedal ..................................................................................................................... 1-19
Hydraulic Reservoir Level Sight Gauge ................................................................................................ 1-20
Horn Button......................................................................................................................................... 1-20
Choke ................................................................................................................................................. 1-20
Operating Instructions ............................................................................................................................. 1-21
Pre-Start Checklist .............................................................................................................................. 1-21
Starting Gas Machines ........................................................................................................................ 1-21
Starting LP Machines .......................................................................................................................... 1-21
Post-Operation Checklist .................................................................................................................... 1-21
Service Chart ........................................................................................................................................... 1-22
Helpful Hints For Cleaning Operation.................................................................................................... 1-24
Service Precautions ................................................................................................................................ 1-25
Service Instructions ................................................................................................................................. 1-26
Main Broom......................................................................................................................................... 1-26
Main Broom Height,Adjusting The....................................................................................................... 1-26
Main Broom Access Door.................................................................................................................... 1-26
Replacing The Main Broom.................................................................................................................. 1-26
Side Broom ......................................................................................................................................... 1-27
Side Broom Height, Adjusting The ....................................................................................................... 1-27
Replacing The Side Broom .................................................................................................................. 1-27
Hopper ................................................................................................................................................ 1-28
Hopper, Cleaning The .......................................................................................................................... 1-28
Hopper Switch, Adjusting The .............................................................................................................. 1-28
Dust Control Filter ............................................................................................................................... 1-28
Dust Control Filter, Checking The ........................................................................................................ 1-28
Cleaning the Dust Control Filter........................................................................................................... 1-28
Replacing the Dust Control Filter ......................................................................................................... 1-28
Dust Flaps .......................................................................................................................................... 1-29
TABLE OF CONTENTS

1-2 American-Lincoln®
SC7740
Dust Flaps, Checking The ................................................................................................................... 1-29
Dust Flaps, Adjusting The ................................................................................................................... 1-29
NeutralAdjustment..................................................................................................................................... 1-30
Parking Brakes ................................................................................................................................... 1-30
Adjusting the Parking Brake Pedal ...................................................................................................... 1-30
Adjusting the Parking Brake ................................................................................................................ 1-30
Adjusting the Directional Pedal............................................................................................................ 1-30
General Machine Maintenance ................................................................................................................... 1-31
Replacing the Scrub Brush.................................................................................................................. 1-31
Covers and Latches............................................................................................................................. 1-31
Low Solution Warning Light ................................................................................................................. 1-31
High Recovery Light ............................................................................................................................ 1-31
Solution Control................................................................................................................................... 1-31
Recycling Pump ESP System ............................................................................................................ 1-32
Recycling Pump Storage ..................................................................................................................... 1-32
Rear Squeegee ................................................................................................................................... 1-32
Squeegee Caster Wheels.................................................................................................................... 1-32
Casters,Adjusting The ........................................................................................................................ 1-32
Emptying The Recovery Tank .............................................................................................................. 1-33
Machine Storage ................................................................................................................................. 1-33
Checking Engine Oil Level................................................................................................................... 1-34
Checking Engine OIl............................................................................................................................ 1-34
Fan Belt Tension ................................................................................................................................. 1-34
Checking Spark Plugs ......................................................................................................................... 1-34
Drive Belt Tension Adjustment ............................................................................................................. 1-34
Cleaning/Changine the Fuel Filter ........................................................................................................ 1-35
Checking the Fuel Hoses .................................................................................................................... 1-35
Valve Clearance.................................................................................................................................. 1-35
Air Cleaner .......................................................................................................................................... 1-35
Checking Water Level.......................................................................................................................... 1-36
Draining and Cleaning the Radiator...................................................................................................... 1-36
LP Gas System ......................................................................................................................................... 1-37
LP Gas Vaporizer-Regulator Qick Check ............................................................................................. 1-37
LP Gas Fuel Tank ............................................................................................................................... 1-37
LP Liquid Withdrawal System ............................................................................................................. 1-37
Safety Warnings LP ................................................................................................................................... 1-38
LP Tank Components .......................................................................................................................... 1-39
LP Checklist ....................................................................................................................................... 1-39
LP Fuel Tank ....................................................................................................................................... 1-39
Use and Care of LP Tank..................................................................................................................... 1-40
Changing LP Tank ............................................................................................................................... 1-40
Storing LP Fuel Tanks ......................................................................................................................... 1-40
ESP System Operating Instructions........................................................................................................... 1-41
Scrubbing System - How It Works....................................................................................................... 1-41
Non-Recycling Or Standard Scrubbing System - How It Works ........................................................... 1-41
ESP Recycling ON/OFF Switch (Option)............................................................................................. 1-41
Recovery Or ESP System - How It Works........................................................................................... 1-41
General Troubleshooting............................................................................................................................. 1-42
Parts List Legend....................................................................................................................................... 1-44
Ordering Parts............................................................................................................................................ 1-45
Chapter 2 (Parts List)
Main Frame & Flaps............................................................................................................................ 2-2
Main Frame & Flaps Cont. .................................................................................................................. 2-4
Cover-Hopper/Engine ........................................................................................................................... 2-6
Drive WheelAssembly ........................................................................................................................ 2-8
Front Wheel ........................................................................................................................................ 2-10
Parking Brake ..................................................................................................................................... 2-12
Swing Squeegee Support .................................................................................................................... 2-14
Squeegee Lift ...................................................................................................................................... 2-16
Rear Squeegee (40”) ........................................................................................................................... 2-18
TABLE OF CONTENTS

American-Lincoln®1-3
SC7740
TABLE OF CONTENTS
Rear Squeegee (46”) ........................................................................................................................... 2-20
Side Squeegee (40”)............................................................................................................................ 2-22
Side Squeegee (46”)............................................................................................................................ 2-23
Solution Vac........................................................................................................................................ 2-24
Main Broom Lift Assembly................................................................................................................... 2-26
Main Broom Assembly Cont................................................................................................................ 2-28
Side Broom Assembly......................................................................................................................... 2-30
Side Broom LIftAssembly ................................................................................................................... 2-32
Hopper (Low Dump)............................................................................................................................. 2-34
Scrub Deck Lift (40”) ........................................................................................................................... 2-36
Scrub Deck Lift (46”) ........................................................................................................................... 2-38
Scrub Deck (40”) ................................................................................................................................. 2-40
Scrub Deck (46")................................................................................................................................. 2-42
Recovery Tank ..................................................................................................................................... 2-44
Solution Tank ...................................................................................................................................... 2-46
Solution Control................................................................................................................................... 2-48
Steering, Tilt ........................................................................................................................................ 2-49
Directional Control Assembly............................................................................................................... 2-50
Engine Assembly (LP)......................................................................................................................... 2-52
Engine Assembly (Gas)....................................................................................................................... 2-54
Engine Assembly (LP/GAS) ................................................................................................................ 2-56
Engine Assembly (LP/GAS) Cont........................................................................................................ 2-58
Engine Assembly (LP/GAS) Cont........................................................................................................ 2-60
Engine Assembly (LP/GAS) Cont........................................................................................................ 2-62
Fuel Tank ............................................................................................................................................ 2-64
LP Tank............................................................................................................................................... 2-65
Dust Control Assembly........................................................................................................................ 2-66
Hydraulic Subassembly....................................................................................................................... 2-68
Hydraulic Subassembly-cont............................................................................................................... 2-70
Hydraulic Hoses & Fittings.................................................................................................................. 2-72
Hydraulic Hoses & Fittings - cont........................................................................................................ 2-74
Drive & Steering Motor......................................................................................................................... 2-76
Scrub Deck Motors & Lift Cylinder-40”................................................................................................. 2-78
Scrub Deck Motors & Lift Cylinder-46”................................................................................................. 2-79
40" & 46" Scrub Deck-Connections ..................................................................................................... 2-80
Squeegee Lift Cylinder ........................................................................................................................ 2-81
Dust Control Hydraulic Motor............................................................................................................... 2-82
Solution Vacuum Hydraulic Motor........................................................................................................ 2-83
Low Dump Hopper Cylinder ................................................................................................................. 2-84
Main & Side Broom Hydraulic ............................................................................................................. 2-85
Hydraulic Connection Diagram ............................................................................................................ 2-86
Seat Support ....................................................................................................................................... 2-88
Decals................................................................................................................................................. 2-90
Electrical Panel & Harness.................................................................................................................. 2-92
Machine Body Harness Connection Diagram....................................................................................... 2-94
Engine & Hyd. Harness Connection Diagram ...................................................................................... 2-95
Instrument Panel (GAS) ...................................................................................................................... 2-96
Instrument Panel (LP).......................................................................................................................... 2-98
Control Panel ...................................................................................................................................... 2-100
Control Panel Connection Diagram ...................................................................................................... 2-102
Electrical Schematic Gas/LP .............................................................................................................. 2-103
Electrical Schematic Gas/LP-cont....................................................................................................... 2-104
Electrical Schematic Gas/LP-cont....................................................................................................... 2-105
Chapter 3 (Options)
Back-Up Alarm .................................................................................................................................... 3-2
ESP (12V & 36V) ................................................................................................................................ 3-4
Fire Extinguisher ................................................................................................................................. 3-7
Over Head Guard (OHG) ...................................................................................................................... 3-8
Seat Belt Assembly ............................................................................................................................ 3-9
Strobe Light Without OHG (12 & 36 VDC) ........................................................................................... 3-10
Strobe Light With OHG (12 & 36 VDC) ................................................................................................ 3-12
Spray & Vac Wand .............................................................................................................................. 3-14
Index .......................................................................................................................................................... 3-17
Warranty .................................................................................................................................................... 3-21

1-4 American-Lincoln®
SC7740
DIMENSIONS
Length - 89 in. (223 cm)
Width - 47 in. (119.3 cm)
Height - 59 in. (152 cm)
Heightw/OverheadGuard - 81.2 in. (206.2 cm)
Wheel Base - 38.6 in. (98.0 cm)
CLEANINGPATH
Scrubbing - 40 in. (101 cm)
- 46 in. (117 cm)
Sweeping - 46 in. (117 cm)
EdgeCleaning - 6 in. (15 cm) Right Side 46 in. (117 cm) only
TRANSPORTSPEED - 0-4 MPH(0-6.4 kph)
STEERING - Rack & Pinion 90°-90° with HydraulicAssist
TURNINGRADIUS
Left - - 59 in. (150 cm)
Right - 59 in. (150 cm)
Aisle“U”Turn - 87 in. (221 cm)
WEIGHT
StandardMachine(Battery) - 2550lbs.(1157kg.) withoutbattery
- 3580lbs.(1623.9kg.) Operating
TIRES
FrontSolid Urethane - Two (2) 16 in (41cm) x 3.75 in (8.26 cm)
RearSolid Rubber - One (1) 16 in (41 cm) x 4.00 in (10.16cm)
RAMPCLIMBING - Transporting12°
- Operating6°
INSTRUMENTSAND CONTROLS
Main/SideBroomSwitch Key Switch
LowLPIndicator Light HourMeter
SqueegeeSwitch Fuel Gauge
RecoveryTankFullLight Choke
Scrub Deck Switch DustControlSwitch(with certainmodels)
HornButton LowSolutionLight
SolutionControlKnob Filter Shaker Switch
HopperSwitch Engine SpeedSwitch
ParkingBrake DirectionalControlPedal
SCRUBBINGSYSTEM
BrushSize-46”(116.84cm) - Three(3) 16”(40.6cm) Diameter
BrushSize-40”(101.4 cm) - Two(2)20”(51cm) Diameter
ScrubDeckDown Force - 300lbs.(136.0kg.)
BrushRemoval - NoTool
BRUSHOPTIONS
Nylon Amerifil(.025)
Proex Amerifil(.040)
SPECIFICATIONS

American-Lincoln®1-5
SC7740
SPECIFICATIONS
SOLUTIONCONTROL SYSTEM
SolutionTank - 60Gallons(227 liter)Polyethylene
SolutionControl - Variable to 3.0 GPM (11.4 lpm)
Type - GravityFeed
OPTIONALEQUIPMENT
Back-UpAlarm Headlight/Taillights
Seat Belt Strobe Light(Red orAmber)
ESP System OverheadGuard
PadDrivers SqueegeeWand
Spray and Vac Wand Option FireExtinguisher
LinatexSqueegee
DRIVES
Propulsion - Variable DisplacementPump-Hydraulic Motor
Sweeping - Hydraulic
Scrubbing - Hydraulic
Vacuum-SolutionPick-Up Hydaulic
Sweeping - Hydraulic
DustControl - Hydraulic
HYDRAULICSYSTEM
MainPump - LoadPressureCompensatedVariable Displacement
Reservoir - 9.5Gal(35.9 liter)
ControlValves - ElectroHydraulicwith 10Solenoids
Fluid - Mobil MultipurposeATForEquivalent
- DexronIII Fluid
SOLUTIONRECOVERY SYSTEM
VacuumFan - Impellor,HydraulicDrive
RECOVERYTANK - 78 Gallons(295 liter)Polyethylene
SQUEEGEE
Rear - Accu-Trac™ 40 in (101.6 cm) Swing, break away,
Accu-Trac™ 46 in (116.8 cm) Swing, BreakAway
Side - 26 in (66 cm) Floating
SqueegeeMaterial - GumRubber
SWEEPINGSYSTEM
Type - DirectThrow
HOPPER
Capacity - 2.5cu.ft.(71liter)
Weight Capacity - 160 lbs (72 kg)
DUMP AND LIFT
DumpHeight - 14 in (35.6 cm.)
MAINBROOM
Onepieceplastic core disposabletype. Canbe used forwetsweeping, free-floatbroomposition.
Length - 36 in (91.4 cm)
Diameter - 10 inches (25.4 cm)
OptionalBristleType - Nylon(Highdensity)
- - Proex
- - Nylon

1-6 American-Lincoln®
SC7740
SPECIFICATIONS
SIDEBROOM
Side Broom Size - 16 inches(40.6 cm)Diameter
BRAKINGSYSTEM
Dynamic - Hydraulic,ReverseofDrive Motor
Parking - Dual Disc Brakes, MechanicallyActivated
ENGINGESYSTEM
KubotaWG1005
Type - Vertical,WaterCooledFour (4)CylinderGasoline
Engine
BoreandStroke - 2.68in x 2.68in (68mm x 68mm)
HP - 24.5@3600 RPM
OilCapacityDisplacment - 45.2 cu in (740 cc)
Fuel - StandardAutomotiveGasoline
Coolant - 50/50 Ethylen Glycol and Water
Kubota DF1005
Type - Vertical,Water Cooled Four(4) Cylinder LPEngine
BoreandStroke - 2.68in x 2.68in (68mm x 68mm)
HP - 24.5@3600 RPM
OilCapacityDisplacment - 45.2 cu in (740 cc)
Fuel - StandardAutomotiveGasoline
Coolant - 50/50 Ethylen Glycol and Water
FUELSYSTEM
GasTank - 20gal(75.7 liter)
LPGTank - 33lbs(13.61kg)
PROPULSIONSYSTEM
Type - Hydro-Mechanical
Control - FootActivated Pedal

American-Lincoln®1-7
SC7740
MACHINE DIMENSIONS
47.0in
(119.3 cm)
14.3in
(36.3 cm)
27.9in
(70.8 cm)
38.6in
(98.1 cm)
87.0in
(220.9 cm)
87.9in
(223.4 cm)
55.8in
(141.8 cm)
59.9in
(152.2 cm)
81.2in
(206.2 cm)

1-8 American-Lincoln®
SC7740
STANDARD HARDWARE & TORQUE VALUES
SAE - Grade 5 SAE - Grade 8
Screw
Size
Grade
5
Plated
Grade
8
Plated
410H
Stainless
Brass Type
F&T
&BT
Type
B, AB
*6
*8
*10
*1/4
5/16
3/8
7/16
1/2
9/16
5/8
3/4
7/8
1
14
27
39
86
15
28
44
68
98
135
239
387
579
15
28
43
108
17
31
49
76
110
153
267
-
-
-
-
-
130
22
40
63
95
138
191
338
545
818
-
-
-
151
24
44
70
108
155
216
378
-
-
18
33
47
114
19
34
55
85
-
-
-
-
-
20
35
54
132
22
39
62
95
-
-
-
-
-
5
9
13
32
6
10
16
-
-
-
-
-
-
20
37
49
120
-
-
-
-
-
-
-
-
-
23
41
64
156
-
-
-
-
-
-
-
-
-
21
34
49
120
-
-
-
-
-
-
-
-
-
C
CCC
FFF F
C = Coarse Thread
F = Fine Thread
* = Torque values for #6 through 1/4 are lb./in. All others are lb./ft.
NOTE
Decrease the torque by 20% when using thread lubricant
The torque tolerance is ± on torque values.
C2000/9905

American-Lincoln®1-9
SC7740
HYDRAULIC TORQUE REQUIREMENTS
HYDRAULIC TORQUE REQUIREMENTS
Refer to the following chart for torque values on all hydraulic hoses and fittings.
Nominal O-Ring Face Seal End SAE O-Ring Boss End
SAE Thread Swivel Thread Str. Fitting
Dash Size Nut Size or Locknut
Size Inch Torque Inch Torque
LB-FT LB-FT
-3 * * 3/8-24 8-10
-4 9/16-18 10-12 7-16-20 14-16
-5 * * 1/2-20 18-20
-6 11/16-16 18-20 9/16-18 24-25
-8 13/16-16 32-35 3/4-16 50-60
-10 1-14 46-50 7/8-14 72-80
-12 1 3/16-12 65-70 1 1/16-12 125-135
-14 1 3/16-12 65-70 1 3/16-12 160-180
-16 1 7-16-12 92-100 1 5/16-12 200-220
-20 1 11/16-12 125-140 1 5/8-12 210-280
-24 2-12 150-165 1 7/8-12 270-360
* O-Ring face seal type end not defined for this tube size.
NOTE
Parts must be lightly oiled with hydraulic fluid.
C-2002