Hyster R30XMS2 (D174 C801) Forklift Service Manual

These R30XMS reach trucks spend their lives in tight warehouse aisles, lifting pallets up high and running long hours, so when something acts up, you need to get in, fix it, and get out without guesswork. This service manual helps you trace electrical and hydraulic issues, tear down and reassemble components in the right order, and verify adjustments so the truck tracks straight and lifts smoothly. For example, if the mast starts jerking halfway up or the truck won’t respond to travel commands, this is what you’d use to isolate whether you’ve got a control issue, a sensor problem, or something mechanical binding.

Applications & Use Cases

• Systematic troubleshooting of no-lift, no-travel, or intermittent faults using step-by-step checks.
• Guided disassembly/assembly of mast, drive, and steering components so parts go back aligned and sealed correctly.
• Electrical diagnostics, helping you trace wiring, check switches, and verify sensors before replacing parts.
• Hydraulic problem isolation, from spongy lift to drift, by testing circuits and confirming causes.
• Routine service planning, ensuring inspections, adjustments, and lubrication follow a logical, safe workflow.

FAQ

Q: Can I use this manual on a tablet in the warehouse?

A: Yes, it’s practical to keep it on a tablet or laptop so you can zoom diagrams and search terms right at the truck.

Q: Is it worth printing sections of this manual?

A: Many techs print the pages for the job they’re on, then mark notes or measurements and keep them with the work order.

Safety Note

Always de-energize the truck, secure elevated loads, and follow lockout procedures before using this manual to start any work.

Hyster R30XMS2 (D174 C801) Forklift Index:

• General
• Description
• Guide Wire Physical Installation
• Equipment
• Specifications
  • Wire Slot and Expansion Loop Specifications
  • Material and General Specifications
• System II Wire Guidance Specifications
• Pre-Installation Information Form

• General
• Description
• Guide Wire Physical Installation
• Equipment
• Specifications
  • Wire Slot and Expansion Loop Specifications
  • Material and General Specifications
• System II Wire Guidance Specifications
• Pre-Installation Information Form

• Safety Procedures When Working Near Mast
• General
• Description
  • Lowering Control Valve
  • Cylinders (General)
  • Cylinders (H520-620B, H700-800A)
    • Retainer, Install
  • Cylinders (H360-460B)
  • Cylinders (Two-Speed)
• Lift Cylinder Repair
  • Lift Cylinder Removal Without Removing Mast
    • Standard Masts With Main Lift Cylinders Fastened to Crossmember of Inner Mast
    • Standard and Full Free-Lift Masts With Lift Cylinder Fastened to Crosshead
    • Masts That Have Two Cylinders, Main Lift Cylinder and Free-Lift Cylinder
  • Disasemble
  • Assemble
  • Lift Cylinder Installation in Mast
    • Standard Masts With Main Lift Cylinder Fastened to Crossmember of Inner Mast
    • Standard and Full Free-Lift Masts With Lift Cylinder Fastened to Crosshead
  • Chevron-Style Packing
    • Chevron-Style Packing Installation on Piston
    • Chevron-Style Packing Installation in Packing Gland
• Lift Cylinders for Vista Masts
  • Description
    • Lowering Control Valve
  • Remove
  • Disassemble
  • Assemble
  • Install
    • Main Lift Cylinders
    • Free-Lift Cylinder
• Lift System Leak Check
• Specifications
• Troubleshooting

• Safety Procedures When Working Near Mast
• General
• Description
  • Lowering Control Valve
  • Cylinders (General)
  • Cylinders (H520-620B, H700-800A)
    • Retainer, Install
  • Cylinders (H360-460B)
  • Cylinders (Two-Speed)
• Lift Cylinder Repair
  • Lift Cylinder Removal Without Removing Mast
    • Standard Masts With Main Lift Cylinders Fastened to Crossmember of Inner Mast
    • Standard and Full Free-Lift Masts With Lift Cylinder Fastened to Crosshead
    • Masts That Have Two Cylinders, Main Lift Cylinder and Free-Lift Cylinder
  • Disasemble
  • Assemble
  • Lift Cylinder Installation in Mast
    • Standard Masts With Main Lift Cylinder Fastened to Crossmember of Inner Mast
    • Standard and Full Free-Lift Masts With Lift Cylinder Fastened to Crosshead
  • Chevron-Style Packing
    • Chevron-Style Packing Installation on Piston
    • Chevron-Style Packing Installation in Packing Gland
• Lift Cylinders for Vista Masts
  • Description
    • Lowering Control Valve
  • Remove
  • Disassemble
  • Assemble
  • Install
    • Main Lift Cylinders
    • Free-Lift Cylinder
• Lift System Leak Check
• Specifications
• Troubleshooting

• toc
  • Curtis Transistor Motor Controller
  • Safety Precautions Maintenance and Repair
  • General
  • Principles of Operation
    • General
    • Transistor Motor Controller
  • Sequence of Operation
    • Key Switch
    • Brake Switch
    • Control Circuit
    • FWD/REV Switch Closed
    • Forward Contactor Energized
    • Gate Pulse to FETs
    • FETs ON for Time of Gate Pulse
    • Gate Pulse Removed
    • Induction Current Flows Through Motor and Flyback Diode
    • Plugging
  • Checks
    • Checking Contactor Coil
    • Checking Transistor Controller
  • Adjustments
    • Plugging Adjustment
    • Acceleration Adjustment
    • Current Limit Adjustment
  • Repairs
    • Contactors
    • Curtis Contactor Parts, Replace
    • GE Contactor Parts, Replace
    • Controller, Replace
    • Accelerator Potentiometer and Control Switches, Replace and Adju
  • Troubleshooting
    • General
    • General Procedures
  • Fault Procedures
• tables
  • Table 1. Inductance
  • Table 2. Fault Codes and Display Messages for R30XMS2 Only

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