1999 Toyota 7FGU/7FDU15-32 & 7FGCU20-32 Forklift Service Manual

This 1999 Toyota forklift service manual covers the 7FGU/7FDU15-32 pneumatic-tire series and 7FGCU20-32 cushion-tire series, with 4Y gasoline, LPG and gasoline/LPG configurations and 1DZ-II diesel engines. The 7FGU32, 7FDU32 and 7FGCU32 are U.S./Canada models.

Text search, bookmarks and diagram detail: PDF text search is not available. Embedded bookmarks link to the service chapters and appendix. Small wiring labels require zooming; several schematics are printed sideways.

• Engine and controls: Engine removal and installation, diesel fuel-system air bleeding, idle and no-load maximum speed adjustments, and optional EZ pedal service.

• Torque converter and transmission: Separate one-speed and optional two-speed overhaul procedures, clutch drum inspection, control-valve service, oil-pressure measurements, and stall tests.

• Axles, steering and brakes: Differential repair, axle bearing adjustments, hydrostatic steering-valve overhaul, brake master and wheel cylinder service, and brake bleeding.

• Masts and cylinders: V, FV, FSV and QFV mast adjustments, chain inspection, lift and tilt cylinder repair, and correction of uneven lifting.

• Hydraulic system: Oil-pump inspection and performance testing, control valves with and without SAS, relief-pressure adjustment, and natural-drop and forward-tilt tests.

• SAS and electrical diagnosis: Error-code and symptom-based troubleshooting, sensor checks, re-setting, connector diagrams, and wiring for the optional vehicle speed controller.

This manual is suited to forklift technicians equipped for heavy component handling, hydraulic pressure testing, and electrical diagnosis.

4Y and 1DZ-II Engine Service

Engine sectional views and performance curves distinguish the fuel configurations and model groups. Service coverage includes V-belt tensioning, air-cleaner inspection, radiator and coolant specifications, battery testing, and catalytic muffler maintenance.

Internal engine repair: The foreword directs engine repair work to the separate 4Y manual CE602-1 and 1DZ-II manual CE618-1. Those publications are not included. This forklift manual covers engine removal, installation and external adjustments; a complete internal engine overhaul requires the separate engine documentation.

The optional vehicle speed control section covers actuator and limit-switch checks, accelerator and throttle wire adjustment, and troubleshooting both with and without an error-code display.

Transmission, Differential and Brake Repair

The two-speed torque converter is an option for the Pn2-3 ton series. Separate procedures address its forward clutch assemblies and shift controls. Exploded-view diagrams for torque converter assemblies accompany hydraulic circuit diagrams for both transmission types.

Clutch-disc inspection, backing-plate selection and shaft-clearance adjustments support transmission rebuilding. Torque converter oil-pump service, inching-valve inspection and direction-switch continuity tests are also covered.

Differential procedures include ring-gear backlash and drive-pinion bearing adjustments. Propeller-shaft service, front and rear axle work, and Danfoss OSPC hydrostatic steering-valve overhaul have their own sections.

Brake chapters distinguish the Pn1 and cushion-tire assemblies from Pn2-3 ton brakes. Parking-brake, brake-pedal and inching-pedal adjustments include the optional single-pedal arrangement.

Mast and Hydraulic Diagnosis

Mast procedures cover roller and strip clearances, chain tension, cylinder seals, and lift-cylinder rod shims. Separate cylinder sections identify mast-specific designs, flow regulator valves and safety down valves.

The natural-drop, forward-tilt and oil-leak tests help distinguish control-valve leakage from cylinder-packing faults before components are removed. Hydraulic circuit diagrams and sectional views show the associated flow paths.

Oil-control-valve coverage separates SAS and non-SAS systems and identifies the earlier dual-solenoid and later single-solenoid SAS arrangements. The non-SAS relief-adjustment section warns that incorrect adjustment can damage the oil pump or other hydraulic components.

SAS Fault Finding and Electrical Reference

Diagnostic routines for the System of Active Stability (SAS) cover swing-lock operation, tilt-angle and load sensors, the yaw-rate sensor, and fork-height switches. Re-setting requirements are tied to sensor, controller, mast and attachment changes.

Diagnostic equipment: Toyota plug-in analyzer SST 09240-23321-71 procedures cover DIAG MEMORY, IN/OUT MONITOR and ACTIVE TEST. Alternative checks use the hour meter and circuit tester. The swing lock cylinder is a replacement assembly: disassembly admits air and makes it unusable.

SAS ECU wiring, connector layouts and pin tables support circuit tracing. Separate diagrams cover gasoline, LPG and diesel fuel circuits, starting, charging, and EZ pedal equipment. Body chapters add combination-meter, relay, fuel-sender and seatbelt checks.

Service Data and Safe Handling

Periodic maintenance charts and replacement intervals cover the 4Y and 1DZ-II powerplants. A dedicated reference table categorizes standard bolt torque values by class and diameter; other tables provide fluid capacities, wear limits and electrical test values.

Fluid requirements specify GM Dexron II for the transmission and SAE85W-90 hypoid gear oil for the differential.

Follow the manual's support, lifting and pressure-relief precautions before removing the mast, counterweight or hydraulic components.

PDF Contents and Included Pages

One printable English 572-page PDF: 2 opening pages for the foreword and section index, 528 pages covering Sections 0-15, and a 42-page appendix containing the SST list, service standards and wiring diagrams. The total already includes 6 lettered revision pages and 8 numbered blank pages within the service chapters.