Weichai America Corp.
45
dead center (33 ± 5) °, exhaust valve to open before the deadline (49 ± 5) °.
5.3.5 Maintenance points
Point 1: Check after demolition
1)
The rocker clean, observe the appearance of the rocker, whether there are cracks and other
defects.
2)
Check the rocker arm bore for wear and abrasion, measuring its diameter.
3)
Check whether the ball pin and rocker arm are worn.
4)
Check whether the smooth flow of oil.
5)
Rocker arm hole diameter measurement and rocker shaft diameter, with the calculation of
clearance.
6)
Check the rocker shaft combination group is worn, rocker arm holder is intact without
cracks, no wear.
Point 2: Assembly
Install the rocker arm assembly (4) with a small amount of lubricating oil on the rocker arm
shaft. The rocker arm assembly (4) is rotated flexibly. Insert the two hex head bolts (6) into the
rocker arm shaft assembly (5).
5.4
Tappet and putter removal and installation
5.4.1 Exploded view
1, body; 2, tappet; 3, cylinder head; 4, putter
Figure 5-4 Exploded view
5.4.2 Preparation before disassembly
Document Courtesy of Fly Parts Guy Co.
www.FlyPartsGuy.com
Document Courtesy of Fly Parts Guy Co.
www.FlyPartsGuy.com
