LeTourneau L-1850 Wheel Loader Service, Parts, Training Manual (Komatsu) (SN 2255)

The L-1850 is a big quarry and mine loader that lives in rock, dust, and heavy production work, so when something acts up you need to understand the system, not just swap parts. This service/parts/training set for the L-1850 (SN 2230) helps you learn how the loader is laid out, what each component is called, and how to think through a fault safely. For example, if an operator reports slow lift and odd noises from the front end, you can use this to trace the hydraulic path, identify the correct valve group, and confirm you’re looking at the right assemblies before you start stripping anything.

Applications & Use Cases

• Build system understanding so new techs can follow circuits and component groups on the L-1850.
• Trace symptoms to likely areas before tearing in, reducing guesswork and downtime.
• Match physical parts to illustrations to avoid ordering the wrong housing, seal kit, or linkage piece.
• Plan disassembly and reassembly order so you don’t trap components or miss hidden fasteners.
• Support on-the-job training, letting apprentices verify terms and layouts while shadowing a senior tech.

FAQ

Q: Can I view this on a tablet in the field?

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

Q: Is this enough for a new mechanic to start learning the L-1850?

A: It’s a strong foundation for understanding systems and components, but they should still work under supervision and follow site procedures.

Safety Note

Always lock out, tag out, and safely support all components before inspecting, testing, or loosening any fittings on the loader.

LeTourneau L-1850 Wheel Loader Service, Parts, Training Manual (Komatsu) (SN 2255) Index:

Specifications & Operations
1 Safety
Controls & O)eraims 4 Quick Referawe
Introduction
2 Ganerd Information
Preventive Maintenance
venive Maintaunce
Storage
Mechanical
field Welding
Ball, Caps and Pins
Tire and Rim
Planetary Drive
Bucket & Teeth
Engine
Stuctural
HPD Gearbox
Access Ladders
Fire Suppression
Hydraulic System
Compressed Air
Hydraulic & Grease Systems
1 Grease System (Auto Lube) 2
1 Brakes
2 CoolingAir (KLENZ)
Electrical Systems
SR Drive btor 2 SR Drive System

LINCS II
4 Component Heaters 5

Structural
Components
Power Unit
Components
Generator
Instrument Panel
Components
Electric Control
Components
Drive Motor
Driver
Assembly
Hydraulic and Air
Operated Components
Miscellaneous

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