10
GENERAL MAINTENANCE
AFX Rotor Impeller Blade Wear
The AFX rotor impeller can wear significantly before adverse
feeding performance is observed. As the impeller wears, the
distance between the impeller and transition cone does not
vary greatly, and has little effect on crop flow.
• Wear may be somewhat uneven, especially in small grains.
This is normal, and should not be cause for replacement
(see figure 10.1).
• Wear that develops a noticeable “hook” may lead to hair-
pinning of material, and impaired flow. Impeller replacement
is necessary in this case
(see figure 10.2).
• Replacement is indicated when wear progresses into
mounting bolt holes, or feeding is noticeably affected. Your
Case IH dealer can refer to Service Bulletin NHE SB 029 05
for the correct method to measure impeller wear to
determine if replacement is suggested
(see figure 10.3).
Anti-Freeze/Coolant Maintenance
The duty-cycle of engines in today’s combines operate at
near full-load conditions a high percentage of the time. The
cooling system must rid the engine of significant heat in these
conditions. Proper maintenance is necessary to keep the
system working at top efficiency and protecting internal engine
components.
• Check coolant level at the de-aeration tank sight glass daily
to assure the coolant level is adequate
(see figure 10.4).
If coolant must be added, observe Operator’s Manual safety
requirements prior to removing the radiator cap.
• Open the rotary screen and assure debris is not
accumulated on radiator fins, restricting air flow
(see
figure 10.5)
• Use only low silicate, heavy-duty coolant formulated for
diesel engines. Mix with clean water in a 50/50 ratio.
Do not use automotive grade coolant available from common
retail outlets. It is not low silicate, and is inadequate for
heavy-duty use.
• Replace the coolant conditioning filter every 250 hrs.
• Replace the coolant and coolant filter every two years.
Refer to the Operator’s Manual.
Figure 10.4
Figure 10.5
Figure 10.1
Figure 10.2
Figure 10.3
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