Workshop manual
TH1 - D504
D 504 NA
D 504 T
D 504 TI
This manual is written for an experienced technician.
Essential tools required in performing certain service
work are identified in this manual and are
recommended for use.
This manual (TH1_D504) covers only the base engine.
It is one of three volumes on LIEBHERR — D504
diesel engines. The following two companion manuals
cover fuel system repair, operation and diagnostics:
• TH2_D504 — Mechanical Fuel System
• TH3_D504 — Electronic Fuel System with
Stanadyne DE10 Pump
Other manuals will be added in the future to provide
additional information on electronic fuel systems as
needed.

Contents
SECTION 01—General Information
Group 000—Safety
Group 001—Engine Identification
Group 002—Fuels, Lubricants and Coolants
SECTION 02—Repair and Adjustments
Group 010—Engine Rebuild
Group 020—Cylinder Head and Valves (Two-Valve
Head Engines)
Group 030—Cylinder Block, Liners, Pistons and
Rods
Group 040—Crankshaft, Main Bearings and
Flywheel
Group 050—Camshaft, Balancer Shafts and Timing
Gear Train
Group 060—Lubrication System
Group 070—Cooling System
Group 080—Air Intake and Exhaust System
Group 090—Fuel System
Group 100—Starting and Charging Systems
SECTION 03—Theory of Operation
Group 120—Base Engine Operation
SECTION 04—Diagnostics
Group 150—Observable Diagnostics and Tests
SECTION 05—Tools and Other Materials
Group 170—Repair Tools and Other Materials
Group 180—Diagnostic Service Tools
Group 190—Dealer Fabricated Service Tools
SECTION 06—Specifications
Group 200—Repair and General Specifications
Group 210—Diagnostic Specifications