Clark GPX/DPX 30/35/40/40S/50/55 Service Manual — Wiring Diagrams

Name: Clark GPX/DPX 30/35/40/40S/50/55 Service Manual — Wiring Diagrams
Author: Clark

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$39.99 USD · one-time payment

Model: GPX 30 | GPX 35 | GPX S40 | GPX 40 | GPX 50 | GPX/DPX 30/35/40/40S/50/55

Type: Forklift Truck

602 Pages·47 MB·Searchable PDF·English·Print-Ready

✓ Wiring Diagrams
✓ Hydraulic Schematics
✓ Torque Specs
✓ Multi-Level Bookmarks (3-level navigation)

Preview Sample Pages (PDF)

Download, file and refund questions: FAQ

Transmission teardown and rebuild anchor this 602-page Clark GPX 30 service manual PDF, which widens to Perkins gas/LPG and Phaser/1000 diesel engine sections, IMPCO fuel, brakes, steering and uprights for five GPX forklift truck variants from the 30 up to the 50. Wiring diagrams and the color code let you trace a dead circuit wire by wire, and the hydraulic schematic maps the lift, tilt and valve circuit so your pressure check reads against something real. Troubleshooting charts cover cooling, steering, pump and upright faults; the Perkins engine sections fill a large share of the book. Pull the axle end and overhaul the caliper once piston linings wear to 0.125 inch (3 mm), and clean the IMPCO vaporizer-regulator every 1000 hours or 6 months. A made-up torque on engine mounting bolts can let a mount work loose under load. Buy it once and the bookmarked, text-searchable PDF stays yours for as long as you run this truck.

What's Inside This Manual

System	Pages	Key Topics
Introduction	6-23	Safety, Planned Maintenance
Engine Removal and Replacement	24-34	Engine Removal, Engine Replacement, Counterweight Removal, Radiator Removal
Perkins Workshop Manual - Gas/LPG Engines	35-50	Engine Views, General Information, Engine Number, Specifications
Perkins Workshop Manual - Periodical Attentions and Fault Finding	51-56	Maintenance Schedules, Post Delivery Checkover, Starting Procedures, Fault Finding Chart
Perkins Workshop Manual - Cylinder Head and Pistons	57-69	Cylinder Head Removal, Valve Maintenance, Piston and Connecting Rod Assembly, Cylinder Block and Liners
Perkins Workshop Manual - Crankshaft, Timing, and Lubrication	70-94	Crankshaft Bearings, Balancer Unit, Timing Case and Drive, Lubrication System, Oil Pump
Perkins Workshop Manual - Cooling and Fuel Systems	95-113	Water Pump, Thermostat, Carburetor, Fuel Lift Pump, Governor and Distributor Drive
Perkins Workshop Manual - Electrical Equipment	114-133	Distributor, Alternator, Dynamo, Starter Motor, Consumable Products
Perkins Phaser/1000 Series Diesel Engines	134-286	Engine Identification, Cylinder Head Assembly, Piston and Connecting Rods, Crankshaft Assembly, Timing Case and Drive, Lubrication System, Fuel System, Cooling System
Cooling System	287-296	Troubleshooting, Cooling System Testing and Maintenance, Fan Belt Replacement, Radiator Removal
Fuel System	297-324	Fuel Pump Pressure Test, IMPCO Fuel System, Carburetor Overhaul, Velocity Governor Overhaul, Removal of IMPCO Vaporizing System
Transmission	325-376	Transmission Checks, Draining and Refill, Transmission Removal, Transmission Overhaul
Electrical System	377-394	Wiring Color Code, Wiring Diagrams, Electrical Checks
Drive Axle	395-417	Axle End Lubrication, Axle End Removal, Axle Ends Overhaul, Differential Overhaul
Wheels and Tires	418-429	Lifting, Jacking, And Blocking, Wheels and Tires Mounting
Braking/Inching System	430-449	System Description/Troubleshooting, Brake and Inching System Bleeding, Brake and Inching Pedals Adjustment, Master Cylinder Overhaul, Power Booster Overhaul, Brake Caliper Overhaul
Steering Column and Gear	450-474	Troubleshooting, Steering Column and Gear Removal, Char-Lynn Steering Control Unit
Steer Axle	475-492	Steer Axle Removal, Steer Axle Overhaul, Steering System Adjustment, Steer Cylinder Removal, Steer Axle Wheel Bearings, Steer Cylinder Overhaul
Hydraulic Sump, Filters, and Pump	493-501	Hydraulic Sump and Filters, Pump Troubleshooting and Overhaul
Hydraulic Valve/Lift Circuit	502-516	Hydraulic System Pressure Check, Hydraulic Valve Overhaul, Hydraulic Valves, Hydraulic Schematic
Tilt Cylinders	517-525	Tilt Cylinder Removal, Tilt Cylinder Overhaul, Tilt Lock Valve
Uprights	526-569	Troubleshooting and Visual Inspection, Operational Checks, Carriage Check and Adjustment, Upright Check and Adjustment, Cylinder Repair, Lift Chain Maintenance
Counterweights	570-573	Counterweight Removal and Reinstallation
Specifications	574-602	Namplates/Decals, PM Inspection and Drivers Daily Inspection Forms, Recommended Lubricants & Lubricant Specifications, Lubrication Intervals

Quick Reference Specifications

Specification	Value	Page
Engine Mounting Bolts	164-184 N-m (121-136 lbf-ft.)	p. 588
Transmission to Engine Bolts	33-37 N-m (24-27 lbf-ft.)	p. 588
Vaporizer-regulator cleaning interval	1000 hours or 6 months of operation	p. 309
Model J vaporizer-regulator rating	12 gallons/hr.	p. 308
Piston lining wear limit	0.125 inch (3mm)	p. 447
Disk lining minimum thickness	0.1 inch (2.5 mm)	p. 447
Hydraulic Fluid Flush Amount	2 quarts	p. 495
Hydraulic Sump Drain Interval	Every 2000 hours or once a year	p. 495
Chain wear replacement limit	3% or more	p. 533
Fork heel wear limit	10% smaller than the arm	p. 535
Maximum wear limit for chain span	3%	p. 563
Engine Oil Pressure (at max engine speed)	30-60 lbf/in² (2.1-4.2 kgf/cm²)	p. 49

Brand	Clark
Model	GPX 30, GPX 35, GPX S40, GPX 40, GPX 50, GPX/DPX 30/35/40/40S/50/55
Machine Type	Forklift Truck
Manual Type	Service Manual
Language	English
Format	Searchable PDF (Digital Download)
Pages	602
File Size	47 MB
Wiring Diagrams	Yes
Hydraulic Schematics	Yes
Torque Specifications	Yes
Bookmarked / Indexed	Yes

Clark GPX/DPX 30/35/40/40S/50/55 Service Manual — Wiring Diagrams

What's Inside This Manual

Quick Reference Specifications

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