Repair manual

44925
The c amshaft cams directly control rockers: 6 for inject ors and 12 for valves.
Rockers slide directly on the cam profiles via rollers.
The other end acts on a bar directly supported by the two valves stems.
A pad is placed between the rocker adjusting screw and the bar.
Two lubrication holes are obtained inside the roc kers.
The roc ker shaft practically covers the whole cy linder head; remove it to have access to all the underlying components.
Figure 98
71728
71729 71730
Figure 99
Figure 100
Figure 101
PUMP INJECTOR ROCKER
EXHAUST VALVES ROCKER
The bush surfac es must not show any trace of scoring of
excessive wear; otherwise, replace bushes or the whole
rocker.
DISCHARGE VALVE ROCKER
Rocker
SECTION A-A
SECTION B-B
SECTION A-A
SECTION B-B
SECTION A-A
SECTION
B-B
Chec k that the surface of the shaft shows no scoring or signs of seizure; if it does, replace it.
MAIN DATA OF THE ROCKER ARM SHAFT
73557
Shaft
Figure 102
Figure 103
99376
ROCKER SHAFT
SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS
43
F3C CURSOR ENGINES
Print P2D32C005 E Base - May 2007