WEICHAI WD10 Service Manual - page 83
Service Manual for WD10 Diesel Engine
73
4444 Steps to Assemble Flywheel and Ring Gear
(1) Fix the flywheel ring gear on flywheel with bolts;
(2) Knock the pin into crankshaft rear end fully.
(3) After inserting flywheel guide rod into crankshaft threaded hole, install flywheel and
pre-tighten the bolts diagonally.
a) Apply lubricating oil on flywheel bolt thread and bearing surfaces.
b) Flywheel bolt M14×1.5 (×9)
Tighten the bolts with hand: After applied lubricating oil on flywheel bolt thread and bearing
surfaces, place the bolts and pre-tighten them to 60~80Nm diagonally; and then tighten the
bolts for 90°±5° twice, and tightening torque should reach 230~280Nm. For bolts that fail to
reach the required torque should be replaced. Fly wheel bolts are allowed to use twice at most.
Tighten the bolts with auto-wrench: After applied lubricating oil on flywheel bolt thread and
bearing surfaces, place the bolts and pre-tighten them to 60~80Nm diagonally; and then tighten
each bolt with auto-wrench for 160°±5°, and tightening torque should reach 230~300Nm. For
bolts that fail to reach the required torque should be replaced. Fly wheel bolts are allowed to
use twice at most.
(4) Tighten flywheel bolts
After applied lubricating oil on flywheel bolt thread and bearing surfaces, place the bolts and
pre-tighten them to 60~80Nm diagonally; and then tighten the bolts for 90°±5° twice, and
tightening torque should reach 230~280Nm. For bolts that fail to reach the required torque
should be replaced. Fly wheel bolts are allowed to use twice at most.