WEICHAI WD12 Manual

Contents
...1
Chapter I Maintenance for WD615/WD10/WD618/WD12 Diesel Engines
1.1 Daily Maintenance...................................................................3
1.2 Periodic Maintenance................................................................5
1.3 Maintenance Interval ...............................................................6
1.4 Maintenance Contents ..........................................................10
1.5 Replacement of Oil and Oil Filter .............................................13
1.6 Replace Fuel Filter ..............................................................16
1.7 Check Air Filter Element ..........................................................17
1.8 Check and Adjust Valve Clearance ...........................................19
1.9 Check and Adjust Fuel Supply Advance Angle .............................24
Chapter II Key Points about Assembling or Disassembling WD615 Diesel
..................................................................................26
Engines
2.1 Assemble Injection Nozzle, Camshaft and Cylinder Liner...............26
2.1.1 Assemble Injection Nozzle ..................................................26
2.1.2 Assemble Camshaft ...........................................................26
2.1.3 Assemble Cylinder Liner ....................................................27
2.2 Pre-assemble & Assemble Crankshaft .......................................29
2.2.1 Assembling Steps (1) .........................................................29
2.2.2 Assembling Steps (2) .........................................................30
2.3 Assemble Cylinder Body .......................................................31
2.4 Pre-assemble & Assemble Connecting Stick and Piston ...............32
2.5 The Assembly of the Timing Gear Housing .................................36
2.6 The Assembly of Flywheel Housing and Flywheel ........................39
2.6.1 The Assembly of Flywheel Housing .......................................39
2.6.2 The Assembly of Flywheel ..................................................39
2.7 The Assembly of Front Oil Seal and Camshaft Timing Gear............40
2.8 Tightening Torque and Tightening Method of Main Bolts of Diesel
Engine .....................................................................................42
...44
Chapter III Introduction of Fault Case for WD615/618 Diesel Engine
3.1 Diesel Engine Starts Hard .......................................................44
3.1.1 Case Description about Diesel Engine Cannot Be Started (1) ......46