Clark NP 15-20-12D Forklift Service Manual

Name: Clark NP 15-20-12D Forklift Service Manual
Brand: MidWestTech
SKU: SM-535
Price: 69.71 USD
Availability: InStock

348 pages · Publication SM-535

$69.71

Fast free USA shippingShips in 1 business daySave 10% on 2 manuals, 15% on 3 or morePay by credit or debit card or with PayPal. No PayPal account needed.

Models: NP 15-20-12D
Manual type: Service Manual
Pages: 348
Publication: SM-535
Condition: Brand new

Clark NP 15-20-12D Forklift Service Manual, publication SM-535

What's inside

From the manual's own table of contents: 22 sections, 311 entries. See sample pages (PDF, 198 KB)

Search the contents

Title Page

INTRODUCTION

PRELIMINARY SERVICE

OPERATING RULES AND INSTRUCTIONS3 topics

OPERATOR QUALIFICATIONS
OPERATOR TRAINING
OPERATOR RESPONSIBILITY

GENERAL RULES AND PRACTICES

TRAVELING

OPERATOR OF THE TRUCK

ARRIVAL AND PRE-DELIVERY CHECK LIST

PARTS ORDERING INSTRUCTIONS4 topics

HOW TO ORDER
WHERE TO ORDER
INSTRUCTIONS FOR RETURNING PARTS
FIELD MODIFICATIONS

DEALERS OWNERS RECORD

SECTION 05 FRAME INDEX12 topics

05-01 GENERAL DESCRIPTION
AUXILIARY DOOR
05-03 BATTERY RETAINER
05-04 BATTERY ROLLERS
- ROUTINE MAINTENANCE
- DISASSEMBLY
- ASSEMBLY
05-05 LOAD WHEEL ASSEMBLY
05-06 CASTOR ASSEMBLY
- ROUTINE MAINTENANCE
- REMOVAL
- INSTALLATION

SECTION 10 INSTRUMENTS AND DASH CONTROLS19 topics

10-01 GENERAL DESCRIPTION
10-02 EMERGENCY DISCONNECT
- DISASSEMBLY
- INSPECTION
- ASSEMBLY
10-03 AUXILIARY CONTROL
- DISASSEMBLY
- INSPECTION
- ASSEMBLY
10-04 HAND LIFT AND SPEED CONTROL
- MASTER CONTROL SWITCH
- DISASSEMBLY
- ASSEMBLY
- THEORY OF OPERATION
- BRAKE ADJUSTMENT
- BLEEDING THE BRAKE SYSTEM
- DISASSEMBLY
- ASSEMBLY
BRAKE ASSEMBLY TROUBLESHOOTING

SECTION 15 TRANSMISSION11 topics

15-01 GENERAL DESCRIPTION
15-02 TRANSMISSION
- THEORY OF OPERATION
- DRIVE MOTOR REMOVAL AND INSTALLATION
- DRIVE WHEEL REMOVAL AND INSTALLATION
- TRANSMISSION INSTALLATION
- TRANSMISSION DISASSEMBLY
- INSPECTION
- ASSEMBLY
- INSTALL TRANSMISSION ON TRUCK
TROUBLESHOOTING

SECTION 20 ELECTRICAL SYSTEM34 topics

20-01 GENERAL DESCRIPTION
- ELECTRICAL WIRING
- The SCR System
- Diode Test
- Contactor Coil test
- UNDERSTANDING VOLTS, WATTS, AND AMPES
- BATTERY SELECTION
20-03 CONTACTOR
- EV-1 Panel Contactors
- MAINTENANCE AND ADJUSTMENT
- POWER CONTACTS
- CONTACTOR ASSEMBLY (Cableform) A-27185 CONTACTORS
- CONNECTIONS
- MAINTENANCE AND ADJUSTMENT
- COMPONENT SYMBOL EXPLANATION
- TYPICAL PHYSICAL ARRANGEMENT AND IDENTIFSCATION OF COMPONENTS
- CIRCUIT OPERATION
- CONTROL FEATURES
- GENERAL MAINTENANCE INSTRUCTIONS
- TROUBLESHOOTING THE GE EV-1 SCR
- EV-1 CIRCUIT ANALYZER (QU-IC3645AZAl)
- TO PREPARE TRUCK FOR TROUBLESHOOTING
20-04 PRESTOLITE MOTOR SERVICE INSTRUCTION
- VISUAL INSPECTtON
- TESTlNG
- ARMATURE
- FRAME AND SERVICE NOTES
- FlELD COIL INSTALLATION
- ASSEMBLY AND TESTING
- ELECTRIC MOTOR REPAIR
20-05 MASTER CONTROL SWITCH
- DISASSEMBLY
- ASSEMBLY
- MASTER CONTROL SWITCH TROUBLESHOOTING

SECTION 30 HYDRAULIC SYSTEM104 topics

30-01 GENERAL DESCRIPTION
- HYDRAULIC SYSTEM - THEORY OF OPEATION
- LIFT SYSTEM
- HYDRAULIC PUMP/MOTOR
- TO DRAIN RESERVOIR TANK
- INSTALLING A SEAL KIT
- OIL FILTER
- OIL FILTER CARTRIDGE - TO REMOVE
- FILTER CARTRIDGE - TO FIT
- RESERVOIR FILLING
- JOINT LEAKS AFTER TIGHTENING PROPERLY
- CURES
- FLARELESS CONNECTIONS
- INSTALLATION
- INSTALLATION O RING FITTINGS
- HYDRAULIC RESERVOIR ASSEMBLY
- ROUTINE MAINTENANCE
- REMOVAL
- INSTALLATION
- CESSNA LIFT PUMP (D-40503)
- DOWTY PUMP ASSEMBLY (D-40459-7)
30-03 AUXILIARY PUMP
- ROUTINE MAINTENANCE
- REMOVAL
- INSTALLATION
- CESSNA AUXILIARY PUMP (D-40099)
30-04 TORQUE GENERATOR
- STEERING - THEORY OF OPERATION
- HYDRAULIC
- ELECTRICAL
- MECHANICAL
- ROUTINE MAINTENANCE
30-05 LIFT VALVE
- LIFT CONTROL VALVE
- ROUTINE MAINTENANCE
- REMOVAL
- INSTALLATION
- THEORY OF OPERATION
- HYDRAULIC VALVE SWITCH (CESSNA VALVES)
- CESSNA LIFT CONTROL VALVE ASSEMBLY (D-40100)
30-06 AUXILIARY VALVE
- ROUTINE MAINTENANCE
- CLEANING
- REMOVAL
- INSTALLATION
30-07 SOLENOID VALVE
- ROUTINE MAINTENANCE
- CLEANING
- REMOVAL
- INSTALLATION
- DISASSEMBLY
- ASSEMBLY
- SOLENOID VALVE TROUBLESHOOTING
30-08 DEEP REACH SOLENOID VALVE
- ROUTINE MAINTENANCE
- CLEANING
- REMOVAL
- INSTALLATION
- DISASSEMBLY
- ASSEMBLY
30-09 2 STAGE CYLINDER
- REMOVAL
- INSTALLATION
- TWO STAGE CYLINDER ASSEMBLY ‘(D-40534)
30-10 3 STAGE FREELIFT CYLINDER
- REMOVAL
- INSTALLATION
- DISASSEMBLY
- INSPECTION
- ASSEMBLY
- FREE LIFT CYLINDER TROUBLESHOOTING
30-11 3 STAGE STAGING CYLINDER
- ROUTINE MAINTENANCE
- REMOVAL
- INSTALLATION
- DISASSEMBLY
- INSPECTION
- ASSEMBLY
- STAGING ASSEMBLY TROUBLESHOOTING
30-12 SINGLE REACH, REACH CYLINDER
- ROUTINE MAINTENANCE
30-13 SINGLE REACH, TILT CYLINDER
- ROUTINE MAINTENANCE
30-14 DEEP REACH, REACH CYLINDER
- ROUTINE MAINTENANCE
- HMC REACH CYLINDERS
30-15 DEEP REACH TILT CYLINDER
- ROUTINE MAINTENANCE
- REMOVAL
- INSTALLATION
- DISASSEMBLY
- INSPECTION
- ASSEMBLY
- DEEP REACH, TILT CYLINDER TROUBLESHOOTING
30-16 SIDE SHIFTER CYLINDER
- ROUTINE MAINTENANCE
- REMOVAL
- INSTALLATION
- SIDESHIFTER CYLINDER ASSEMBLY
30-17 FLOW DIVIDER
- ROUTINE MAINTENANCE
- REMOVAL
- INSTALLATION
- ASSEMBLY

SECTION 35 TIRES10 topics

35-01 GENERAL DESCRIPTION
35-02 CASTOR ASSEMBLY
- ROUTINE MAINTENANCE
- DISASSEMBLY
- INSPECTION
- ASSEMBLY
- CASTER TROUBLESHOOTING
35-03 LOAD WHEEL ASSEMBLY
- ASSEMBLY
- SINGLE LOAD WHEEL

SECTION 40 SHIELDING INDEX3 topics

40-01 GENERAL DESCRIPTION
40-02 SHIELDING
- INSTALLATION

SECTION 41HOISTING INDEX2 topics

41-01 GENERAL DESCRIPTION
41-02 ELEVATING THE TRUCK

SECTION 45 MAST SYSTEM INDEX41 topics

45-01 GENERAL DESCRIPTION
- UPRIGHT MAINTENANCE
- REACH ASSEMBLY REMOVAL
45-02 TWO STAGE MAST
45-02 TWO STAGE MAST ASSEMBLY
- ROUTlNE MAINTENANCE
- REMOVAL
- INSTALLATION
45-03 THREE STAGE MAST
- Shimming of Mast Bearings on Unit
- Shimming Reach
- Shimming Mast With Reach Removed
- REMOVAL
- INSTALLATION
- THREE STAGE INNER COLUMN ASSEMBLY
- FREE LIFT CYLINDER ASSEMBLY
- THREE STAGE CYLINDER ASSEMBLY AND RELATED PARTS
- THREE STAGE MAST ASSEMBLE TROUBLESHOOTING
45-04 SINGLE REACH CYLINDER
- ROUTINE-MAINTENANCE
- REMOVAL
- INSTALLATION
- SINGLE REACH ASSEMBLY
- SINGLE REACH STANDARD FRONT FRAME ASSEMBLY
- TILT CYLINDER
- SINGLE REACH TILT FRONT FRAME ASSEMBLY
45-05 DOUBLE REACH REMOVAL
- HMC REACH CYLINDER ASSEMBLY
- HMC REACH CYLINDERS
45-06 SIDESHIFTER REMOVAL
- ROUTINE MAINTENANCE
- CLEANING
- VISUAL INSPECTION
- DISASSEMBLY
- ASSEMBLY
45-07 FORK REMOVAL/REPAIR
- ROUTINE MAINTENANCE
- DISASSEMBLY
45-08 LIFT CHAIN
- LIFT CHAIN MAINTENANCE
- LIFT CHAIN INSPECTION

SECTION 50 SPECIFICATION TABLES AND CHARTS INDEX20 topics

50-01 GENERAL DESCRIPTION
50-02 DATA PLATE AND DECALS
50-03 BOLT TORQUE DATA
50-04 RR-30B SPECIFICATIONS ON 24 VOLTS
50-05 RR-30B SPECIFICATIONS ON 36 VOLTS
- LUBRICATION
50-06 PERIODIC MAINTENANCE CHART
50-07 LUBRICATION CHART
50-09 ELECTRIC DEEP REACH TRUCK SPECIFICATIONS
50-10 SHIM THICKNESS
- MAINTENANCE
50-11 SERIAL NUMBER
50-12 ELECTRICAL SCHEMATIC
50-13 ELECTRICAL SCHEMATIC SYMBOLS
50-14 HYDRAULIC SCHEMATIC
50-15 HYDRAULIC SCHEMATIC SYMBOLS
50-16 DECAL AND PART ASSEMBLY
50-17 SPECIAL TOOLS
- FLUSH GREASE FITTING
- SEAL INSTALLATION TOOL

SECTION 99 TROUBLESHOOTING INDEX26 topics

99-01 GENERAL DESCRIPTION
CYLINDERS
AUXILIARY PUMP
LIFT PUMP
STEERING
TRANSMISSION
BRAKES
LIFT
LOWER
REACH EXTEND
REACH RETRACT
SIDE SHIFT LEFT
SIDE SHIFT RIGHT
TILT BACK
TILT FORWARD
EV100 BASICS OF CIRCUIT OPOERATIONS
CONTROL FEATURES
GENERAL MAINTENANCE INSTRUCTIONS
TROUBLE-SHOOTING INSTRUCTIONS
FAILURES THAT CAUSE REDUCED OR NO MOTOR TORQUE WITH SCR CONTROL
FAILURES THAT CAUSE FULL OR NO MOTOR TORQUE WITH SCR CONTROL
FAULTY OPERATION OF OTHER FEATURES
CHECKING COMPONENTS
REPLACEMENT OF EV-100 COMPONENTS
SYMBOLS
SCHMATIC

Inside this manual

Real pages from this service manual (348 pages). Open the sample pages (PDF, 198 KB)

Sample pages from the Clark NP 15-20-12D Forklift Service Manual: Troubleshooting, Specifications, Diagram

Troubleshooting, page 226: CASTER TROUBLESHOOTING
Specifications, page 281: 50-01 GENERAL
Diagram, page 321: SYMPTOM

This is a service manual

Here's how it compares to the other manual types.

This manual

Service manual

Factory repair procedures and technical information such as specifications, troubleshooting, and wiring and hydraulic diagrams, for the models and systems the manual covers. See What's inside for its topics.

Operator's manual

Safe operation, controls, maintenance schedules, lubrication points, inspections, and basic checks. Repair procedures are in the service manual.

Parts manual

Illustrated diagrams with factory part numbers for identifying components and ordering parts. Repair procedures are in the service manual.

Engine service manuals are sometimes sold separately, since certain machine models were offered with more than one engine option.

What it's used for

Factory manual for in-house farm and construction shop use. Straightforward, complete, and easy to follow. It contains the OEM information dealership service departments and parts counters use to diagnose problems, identify components, and perform maintenance or repairs correctly.

Service shops and owner/operators who repair their own equipment

Identifying correct parts and seeing how assemblies come apart and go back together

Keeping equipment running with less downtime

Factory manual, 348 pages

Quantity one is the manual described above.

Fast free USA shipping

Ships in 1 business day.

60-day returns

Free if the mistake is ours. A manual ordered in error must come back unopened in its shrink-wrap; you pay return shipping and a 20% restocking fee applies. Return policy

Binder not included

Manuals over about 300 pages may need a standard 3-ring binder, which you can buy locally to keep the pages organized for shop use.

Questions about model, serial number, engine coverage or contents? Contact us before purchasing and we'll help confirm it's the right manual. Please verify the manual type, machine model, serial number range and engine coverage before purchasing: manuals ordered in error carry a 20% restocking fee (return policy).