Hyster B177, H40XL, H50XL, H60XL Forklift Service Manual

Complete shop manual for Hyster B177, H40XL, H50XL, H60XL forklifts. Covers repair and maintenance with detailed diagrams and specifications. PN 899784.

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Hyster Models Covered & Key Technical Specifications

Models: Hyster H40XL, Hyster H50XL, Hyster H60XL
Sub-models / Variants: S25XL, S35XL, H25XL, H35XL, S40XL, H40XL, S50XL, H50XL, S60XL, H60XL
Trade Names: B177 Series, Hyster Lift Truck
Build Years: 1980s–1990s (referencing series B177)
Serial Numbers: B177 series lift trucks
Technical Data:

  • Engine Displacement (Mazda M4-121G): 1985 cm3 (121.1 in3)
  • Engine Displacement (GM 4-181): 2966 cm3 (181 in3)
  • Engine Displacement (Isuzu C240): 2369 cm3 (144.5 in3)
  • Engine Displacement (Isuzu 4JB1): 2771 cm3 (169 in3)
  • Hydraulic System Capacity: 35.0 litres (9.2 gallons)
  • Alternator Output: 56 amps at 2750 rpm
  • Hydraulic Pump Relief Pressure: 19.3 to 20.0 MPa (2800 to 2900 psi)
  • Steering Relief Pressure: 10.3 to 11.0 MPa (1435 to 1552 psi)
Technical Specifications
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Document Number / Seller:
31148 / Margaret Moore
File Size:
24.47 MB
File Type:
ZIP
Language:
English
Printable:
Yes
Category:
Forklift
Last updated / verified
Jun 3, 2025

Hyster Manual Features & Content Preview

Technical Scope of the Hyster B177 H40XL–H60XL Manual

  • Covers Hyster B177 series H40XL, H50XL, and H60XL forklifts, including variants equipped with Mazda M4-121G, GM 4-181, Isuzu C240, and Isuzu 4JB1 engines
  • Official Hyster SRM 2 publication P/N 899784, dated 1980s
  • Includes 12 electrical schematic diagrams, 15 exploded-view component illustrations, and 8 comprehensive technical specification tables
  • File delivered as a direct download the moment payment clears
  • Indexed PDF search covers every chapter and appendix
  • Stored against your account so you can retrieve it after a hard-drive loss
  • This 100-page manual serves as the primary technical reference for electrical system, fuel system, and cooling system maintenance across the B177 lift truck series

Component and System Documentation

The B177 series service documentation provides a detailed breakdown of critical forklift systems. Chapters focus on alternator repair, featuring specific procedures for Delco, Motorola, and Leece-Neville charging components. Detailed electrical wiring schematics are provided for both gasoline/LPG and diesel configurations, documenting wire color codes and gauge specifications. The manual also contains comprehensive cooling system data, including radiator and thermostat testing protocols, alongside carburetor disassembly and idle adjustment procedures for the Mazda M4-121G engine.

Technical Specification Highlights

Specifications are provided in detailed tables for each supported engine type, including compression ratios, valve clearances, and idle speed settings. The hydraulic section lists pump flow rates, system capacities, and pressure relief values for both the lift and steering circuits. Transmission performance data is categorized by test port pressure in kPa and psi, providing a reference for troubleshooting internal system pressure. Hydraulic oil temperature is specified at 55 to 65°C (130 to 150°F) for accurate testing.

Reference only — always consult a certified technician before performing service on this equipment.

An official Hyster B177 OEM service manual covering the H40XL, H50XL, and H60XL forklifts, documenting engine, hydraulic, cooling, and electrical specifications for the multi-engine power configurations used in this series.

Document Reference: Part No. 899784, 2200 SRM 2

Manual FAQ, Purchase & Download Details

Are alternator wiring schematics and connector reference diagrams included in this manual? keyboard_arrow_down

Document includes detailed alternator schematics, along with connector and terminal references for Delco, Motorola, and Leece-Neville systems.

Does the manual provide exploded views of the alternator assemblies for the covered lift trucks? keyboard_arrow_down

Exploded view illustrations are included for the various alternator types, showing parts like rotors, stators, and housings in detail. These visual references support the identification and relationship of the internal components.

Can I find technical reference data for rotor field winding resistance or stator winding test procedures within this document? keyboard_arrow_down

Manual covers electrical testing parameters for internal alternator components, including expected resistance ranges for rotor field windings. It also contains guidance on using ohmmeters and test lamps to check stator windings and other circuits for continuity or ground faults. These sections provide the technical context needed for evaluating alternator health.

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