CYLINDER HEAD AND VALVE
Main Points for Mount
Mount of Piston Pin
Measure the following dimensions of the piston, piston pin
and connecting rod;
A) Length of inserting hole of the piston pin;
B) Width between the keyway
C) Length of piston pin
D) Width of smaller end of connecting rod.
Calculate the dimension L by substituting the letters in the
below formula with the measured dimensions:
[(A C)(B D)] / 2
Insert the SST of compression bar in the piston pin and mount
the conduit A at the end of compression bar.
Conduct the assembly in such way that the mark for forward
face on the piston is in the same direction with that of the
Coat the engine oil on the outside diameter of the piston pin.
Encase the piston pin, connecting rod and conduit cluster
assembled as Step (3) in the piston pin hole at the side with
mark for forward face with conduit A.
Screw the guide block B in the conduit A and ensure the
clearance between the guide block B and the guide block A is
the value of the sum of L calculated in Step (2) plus 3 mm..
Maintain the state that the mark for forward face of piston
faces upwardly, and mount the piston and connecting rod
cluster on the base seat of the assembler of piston pin.
Press in the piston pin with pressure. If the pressure force is
less than the standard value, Change the piston pin and the
piston cluster, or/and change the connecting rod.
Standard value: 750
guide block B
mark for forward face
f o r w a r d