Raymond Forklift 20 SCR Operation & Maintenance Manual SN 13600 – 20999 – PDF DOWNLOAD
FILE DETAILS:
Raymond Forklift 20 SCR Operation & Maintenance Manual SN 13600 – 20999 – PDF DOWNLOAD
Language : English
Pages : 165
Downloadable : Yes
File Type : PDF
DESCRIPTION:
Raymond Forklift 20 SCR Operation & Maintenance Manual SN 13600 – 20999 – PDF DOWNLOAD
Troubleshooting Instructions for the Raymond Model 20 SCR trucks. Figure 1-1 shows a Model 20 Reach-Fork truck.
1-2 The Model 20 power lift truck is primarily built for general indoor warehouse use, or for bulk storage outdoors on paved
~r other hard surfaces. The truck is a stand-up rider type designed for narrow aisle installations. Right angle stacking of
palletized loads can be accomplished in aisles as narrow as 6 feet.
example, to carry a 2,000 lb. load at speeds up to 5 miles per hour, to elevate at speeds up to 40 feet per minute, and to
stack loads at heights up to 240 inches. These factors plus its exceptional maneuverability make the Model 20 truck the
leading performer of 24 volt narrow aisle trucks.
1-4 Model 20 series trucks are available in 2000, 3000, and 4000 pound capacities and can be provided with straddle, reachfork,
deep reach, scrambler low-lift platform and fork, 40 (four directional), high lift pallet, or sidereach attachments. The
mast is offered in either two or three stage construction. A variety of collapsed and elevated heights are available to fit
most applications. In addition, various optional features such as power tilt, sideshift, clamp, etc., adapt the truck to
specific situations. Model 20 SCA trucks have, as a standard feature, U.L. type E approval. Type EE approval is optional.
1-5 Power steering is standard on all Model 20 trucks. Other conveniences which the trucks offer are a low step in
compartment (only 11″ high) and the convenient location of the controls. Controls are located so the operator can drive
facing either towards or away from the load. The operator controls steering with one hand while travel direction and
speed, lift, lower, and auxiliary functions are all within easy reach of the other hand.
1-6 The Model 20 SCA truck incorporates the use of electronic semi-conductors to control travel speeds. This system provides
the operator with an infinite selection of travel speeds, from slow inching to approximately 4½ miles per hour. The truck
has a non-variable higher speed giving a top speed of 5 miles per hour.
TABLE OF CONTENTS:
Raymond Forklift 20 SCR Operation & Maintenance Manual SN 13600 – 20999 – PDF DOWNLOAD
SECTION DESCRIPTION PAGE
INTRODUCTION 1-1
1-7 Vehicle Specifications 1-3
II DESCRIPTION 2-1
2-2 Chassis 2-1
2-7 Drive Unit 2-1
2-12 Brake 2-1
2-14 Steering 2-5
2-19 Swivel Caster 2-6
2-21 Hydraulic System 2-6
2-22 Lift/Lower 2-6
2-33 Auxiliary Functions 2-8
2-38 Low Lift Hydraulics 2-8
2-45 Electrical Circuits 2-9
2-46 Travel Circuit 2-9
2-47A Key Switch 2-9
2-48 Directional/Speed Control Assembly 2-9
2-50 Control Unit 2-9
2-54 The SCR’s 2-12
2-63 Miscellaneous Circuits Z-1″3
2-66 Optional Circuits 2-13
111 OPERATING INSTRUCTIONS 3-1
3-1 Controls 3-1
3-4 Optional Features 3-1
3-5 Low Voltage Circuit Breakers 3-1
3-7 Remote Lift/Lower 3-1
3-11 Operating the Truck 3-1
3-13 Preparation 3-2
3-18 To Travel Forward or Reverse (except 4-0) 3-4
3-20 Travel Mode Selection (4-0) 3-4
3-22 Caster LoaJ Wheels ( 4-0) 3-4
3-24 To Travel Forward or Reverse 3-4
3-26 To Travel Sideways (4-0) 3-5
3-28 To Brake 3-5
3-31 Plugging 3-5
3.35 Lift/Lower 3-5
3-38 Operating the Auxiliary Functions 3-6
3-40 Ramp Operation 3-6
3-43 To Turn Into An Aisle 3-6
3-45. Entering and Leaving Pallets 3-7
a. With A Straddle Truck 3-7
b. With A Reach Truck 3-7
3-46 Entering and Leaving Skids or Pallets (Low
Lift Trucks) 3-7
3-48 Handling Long Loads 3-7
3-51 Parking the Truck 3-8
3-53 SAFETY 3-8
TH ■ “AYMCINCI C0SIP0~AT10N
MODEL 20 SCR
TABLE OF CONTENTS (cont’d.)
SECTION DESCRIPTION PAGE
IV INSTALLATION 4-1
4-3 Battery and Charger 4-1
4-8 Truck Operational Check 4-1
V THEORY OF OPERATION 5-1
5-2 Lift/Lower System 5-1
5-3 Lift 5-1
5-5 Lowering 5-1
5-7 Travel Lift/Lower 5-1
5-9 Power Steering 5-3
5-12 Auxiliary Hydraulic System 5-3
5-16 Reach, Power Tilt, etc. 5-3
5-19 Hydraulic – Low Lifts 5-5
5-21 Travel System 5-6
5-24 What Is An SCR? 5-6
5-29 SCR Applications 5-7
5-36 Operation of the Travel System 5-9
VI MAINTENANCE 6-1
6-1 Scheduled Maintenance 6-1
6-3 Drive Unit 6-7
6-6 To Clean and Inspect the Drive Motor 6-7
6-7 To Replace the Drive Motor 6-7
6-8 To Replace the Drive Wheel 6-10
6-9 To Remove and Disassemble the Drive Unit 6-13
6-10 To Reinstall the Drive Unit 6-14
6-11 The Brake 6-15
6-18 Steering 6-17
6-20 To Remove the Steering Assembly 6-18
6-21 To Disassemble the Steering Assembly 6-20
6-24 Swivel Caster 6-22
6-28 Adjustment of the Swivel Caster 6-23
6-31 Hydraulic 6-24
6-32 General 6-24
6-41 Hydraulic Oil and Filter 6-25
6-43 Bleeding Air From the Lift Cylinder 6-25
6-45 Lift and Auxiliary Pumps 6-26
6-49 Lift/Lower Control Valve 6-26
6-51 Manifold Assembly 6-26
6-53 Lift Pressure Relief Valve 6-26
6-56 Low Pressure Relief Valve 6-27
6-58 Solenoid Valves 6-27
6-62 Auxiliary Control Valve 6-28
6-64 Auxiliary Valve Pressure Relief 6-28
6-67 Electrical 6-29
6-68 Battery 6-29
6-86 Motors 6-31
6-98 Contactors 6-33
6-114 Directional/Speed Control Assembly 6-41
6-122 Control Unit 6-44
6-160 Plugging Relay K2 6-50
6-162 Transient Suppressors 6-50
Diode Assemblies
Resistor Assemblies
Low Voltage Circuit Breaker
Testing Other Electrical Components
Lift Chain
TROUBLESHOOTING 7-1
General Troubleshooting
Listing of Truck Problems
FLOW
DIAGRAM
TRUCK PROBLEM
The Truck Is Completely Inoperative 7-3
There Is No Reach, Tilt, Sideshift or Power
Steering 7-8
There Is No Lift – The Truck Travels OK
and Has Auxiliary Functions 7-9
The Truck Has No Travel – All Other
Circuits Function 7-11
The Truck Has No Reverse Travel But There
Is Forward Travel 7-19
The Truck Has No Forward Travel But
There Is Reverse Travel 7-20
The Truck Has No “M” Speed Range –
Operates Properly in SCR Range 7-21
The Truck Runs at Approximately Half
Speed in the SCR Range 7-23
The Truck Develops Top Speed Throughout
the SCR Range 7-24
The Truck Acceleration is Jerky in the SCR
Range 7-25
The Truck Reacts Violently When Plugged 7-26
The Overload Kicks Out During Operation 7-27
The Truck Stalls While Going Up a Ramp 7-30
Remote Lift/Lower Problems 7-32
Auxiliary Systems Problems
Lift/Lower Circuit Problems
The Horn is Inoperative
Hydraulic Problems
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