1970-1988 Hyster D002 S30E-S120E H60E-H110E Forklift Service & Repair Manual

• Official 20-page Hyster OEM service manual (P/N 899788, revised 2002) covering 1970–1988 HEI ignition systems
• Covers S30-120E, H60-110E, and GM-powered lift truck variants
• Includes 18 detailed exploded-view diagrams and 11 electrical schematic layouts for rapid diagnostic reference
• Serves as the primary technical resource for maintaining and troubleshooting GM-based HEI ignition assemblies across the specified Hyster equipment range

Component and System Documentation

This publication gives you a complete breakdown of the ignition components found on GM-powered units. You get clear documentation of the operational theory and component layouts for distributors, ignition coils, electronic modules, sensing coils, and spark plug circuits. The manual maps out specific removal and installation sequences alongside timing adjustment procedures tailored to V8, V6-LPG, and four-cylinder engine setups. Working with high-energy ignition systems carries inherent risks of severe electrical shock. To protect technicians on the job, this guide incorporates essential safety procedures for high-voltage handling and precise distributor rotor alignment.

Specification and Diagnostic Data

Stop guessing and rely on factory reference values. The documentation lists precise data for ignition timing, sensing coil resistance, and high-voltage wire impedance. For example, ignition timing is documented at 8° BTDC at 600 rpm for 4-cylinder engines, and 10° BTDC at 650 rpm for V8-366 LPG models. You will also find categorized wire resistance values based on cable length. These range from 3,000 to 10,000 ohms for shorter leads, up to 20,000 ohms for the longest cables. A dedicated troubleshooting section connects common symptoms—like a crank-no-start condition—directly to likely faults such as open circuits, moisture ingress, or ignition module failure.