Maintenance manual for sunray hfc4da1-2c china-IV diesel engines
36
II. Illustration for Assembly of Engine
1. Install the piston cooling fuel injector
subassembly.
a. Install the piston cooling fuel injector subassembly:
Install the piston cooling fuel injector subassembly
onto the engine block;
b. Tighten the hexagon socket screws to 12.5±2.5N.m;
2. Install the crankshaft, thrust plates,
and main bearing caps.
a. Install the upper and lower main bushes: Align the
stop opening of upper main bush with the slip groove
of the main bearing block bore of engine block and
push 5 upper main bushes to place;
Notice: While installing the main bushes, make
sure to differentiate the upper and lower bushes,
of which the upper bush has oil grooves and the
lower bush has not. Do not install the bushes
reversely.
a. Apply an appropriate amount of clean engine oil onto
the upper bearing bush;
b. Lift up and place the crankshaft onto the engine
block.
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