Weichai America Corp.
38
openings are staggered by 120 ° and at the perpendicular bisector of the centerline of the
piston pin. As shown in Figure 4-9
Figure 4-9 Piston ring assembly opening angle diagram
6.
Turn the engine so that the 1, 6 cylinder is near the bottom dead center, put in the 1, 6-
cylinder piston rod and loosen the connecting rod bolts. Piston fuel injection gap and the body
is located on the same side of the piston cooling nozzle, the piston cylinder times the same
number of cylinder, connecting rod cover and connecting rod body paired with connecting rod
bolts before loading clean lubricating oil;
7.
Tighten the connecting rod bolt:
Hand Tighten: Tighten first and then symmetrically with a torque of 115N • m, with a final
rotation of 90 ° ± 5 °. The same method to install the remaining cylinder.
Automatic wrench tightens: first screwed and then use 80N.m torque symmetrical tightening,
the last turn 153 ° ± 5 °. The same method to install the remaining cylinder.
Connecting rod bolts are not allowed to be reused, after tightening in place, lacquered.
4.5.5 Maintenance points
1.
Check the piston combustion chamber throat, piston pin seat and other places for cracks;
check the piston skirt, head pull cylinder phenomenon; check the piston pin hole wear and
tear is normal;
2.
Check the piston ring in the piston ring groove is stuck phenomenon;
Document Courtesy of Fly Parts Guy Co.
www.FlyPartsGuy.com
Document Courtesy of Fly Parts Guy Co.
www.FlyPartsGuy.com
