1970–1988 Hyster D002 S30E-S120E H60E-H110E Forklift Service & Repair Manual (P/N 899788, 899788)

• 592 PDF pages across 35 files, combining Hyster service sections for S30–120E/S60ES applications with related coverage for S40–50F, H60–110E, and other models identified in individual chapters.
• Engine repair covers GM 4–153, 4–181, 3.0L, and 6–250 engines, plus the Perkins 4.154 diesel, including internal disassembly, inspection, assembly, and adjustment.
• Single-speed powershift service includes clutch and planetary gear work, differential setup, Monotrol diagnosis, stall testing, and hydraulic pressure checks. Separate chapters cover the two-speed manual transmission and oil clutch.
• Fuel-system procedures address Rochester gasoline carburetors and IMPCO CA 50/CA 100 LPG systems, including vaporizer, fuel valve, mixture, and governor service.
• Hydraulic and chassis coverage includes gear pumps, the pump chain drive, control valves, hydrostatic steering, drive and steering axles, service brakes, and the parking brake.
• Standard and full-free-lift mast documentation covers two-, three-, and four-stage arrangements, with separate Vista mast repair, sideshift carriage, lift cylinder, and tilt cylinder sections.
• Electrical diagnosis includes GM HEI ignition, Delco starters, Delco/Motorola/Leece-Neville alternators, gauges, wiring diagrams, and symptom-based troubleshooting charts.

This collection is suited to lift truck mechanics equipped for pressure testing, precision measurement, and removal of heavy assemblies. It combines operating descriptions with workshop repair procedures, inspection limits, adjustment data, and maintenance schedules.

Model and Configuration Coverage

The general specification sheets identify S30E, S40E, S50E, and S60ES configurations with GM 4–153 or Perkins 4.154 engines. Other chassis and component sections extend coverage across the S30–120E range and related Hyster equipment.

Model applicability varies by chapter. The included powershift repair section covers S30–120E and S40–50F. The separate description-and-operation section also covers H60–110E; it does not supply that model’s dedicated transmission overhaul procedures.

Vista mast repair lists S30–60ES, S60–120E, H60–110E, H40–60J, H40–60XL, E30–60BC, E30–60BS, E60–120B, and J40–60AS. The broader electrical and component references have their own application listings.

Production differences are documented where they affect service. For example, the ducted-fan chapter identifies drive-shaft changes at D2D–4264X, C4D–2876X, and C4T–1523Y, distinguishing the earlier spline arrangement from the later roller-clutch design.

Engine, Fuel, and Ignition Repair

Engine procedures extend beyond removal and installation to cylinder heads, valves, timing gears, pistons, connecting rods, crankshafts, bearings, and lubrication components. The GM section distinguishes engine variants and includes hydraulic valve-lifter work, camshaft bearing replacement, cylinder measurements, and rear main seal procedures.

Perkins coverage adds cylinder liner replacement, combustion chamber plugs, diesel fuel-system bleeding, injector checks, and injection-pump timing. It identifies Perkins timing tool 8106 and adapter 8107 for later pump and timing-case arrangements. Internal injection-pump repairs are assigned to a dealer, and injector repair requires specialized equipment.

The fuel chapters distinguish gasoline and LPG systems rather than treating them as interchangeable. Rochester procedures cover float, choke, accelerator pump, idle-stop solenoid, and governor adjustments. LPG documentation follows the fuel filter and shutoff valve through the vaporizer and carburetor, with leak checks and separate component repair procedures.

The HEI section explains distributor, ignition coil, electronic module, sensing coil, and spark plug operation and testing. It includes four-cylinder, inline-six, V6, and V8 references, including the GM V8-366. V6/V8 coverage concerns ignition service, not internal engine overhaul. For the 4.3-liter V6 with EPIC LPG or MSTS, timing and idle-speed procedures are referenced to separate publications.

Transmission, Chassis, and Hydraulic Service

Powershift documentation explains forward, reverse, neutral, and inching oil flow. Repair coverage includes control-valve disassembly, clutch assembly, turbine-shaft clearance, torque-converter inspection, and the S100–120E accumulator valve. Differential procedures address bearing preload, gear backlash, and tooth-contact patterns.

The manual-transmission chapter covers the range synchronizer and direction-selection mechanism. Oil-clutch documentation adds release-mechanism inspection, hydraulic operation, and pedal adjustment.

Hydraulic procedures include pump output testing, main and auxiliary relief-valve checks, and pump-drive chain and bearing adjustments. Steering chapters cover column assemblies, control-unit rebuilding, axle mounts, spindle bearings, and steering-cylinder seals. Brake documentation distinguishes the smaller S30–50E/S60ES/S40–50F assemblies from S60–120E brakes and includes bleeding and pedal and parking-brake adjustment.

Frame work includes counterweight, overhead guard, hood, restraint-system, and engine/transmission removal procedures. Cooling coverage combines radiator and thermostat checks with ducted-fan repair and the special fan-hub installation kit 321006.

Mast Work and Diagnostic Reference

Mast procedures cover chain wear, roller and strip-bearing clearances, carriage alignment, sequence valves, and lift-system leakage. Vista documentation adds sideshift-cylinder repair and header-hose roller adjustment. Cylinder chapters distinguish seal and packing arrangements, including chevron packing and single-lip seals.

The repair cautions address specific damage risks. Excess grease on mast roller tracks can cause rollers to slide and develop flat spots. Removing ducted-fan bearings and roller clutches can damage those parts, affecting what must be replaced during an overhaul.

Diagnostic illustrations include “Electrical Schematic S30–60ES,” “Electrical Schematic S60–120E,” “Hydraulic Schematic – Steering and Powershift,” “LPG System Schematic,” and “Hydraulic Diagram – Vista Three-Stage Mast.” Electrical troubleshooting covers starting failures, battery discharge, charging faults, inoperative gauges, horn faults, and failure of the powershift transmission to engage.

Safety procedures address mast restraint, truck stability during component removal, pressurized fuel and hydraulic systems, and high-voltage ignition handling.

Included PDFs and Page Counts

Individual PDF page counts are shown in parentheses. Totals include covers, contents pages, notes, and blank pages where present.