Cub Cadet Yanmar 3TNV72 - Manual (Page 88)

PERIODIC MAINTENANCE
TNV IDI Service Manual 5-27
Periodic Maintenance Procedures
Check and Clean Radiator Fins
Dirt and dust adhering to the radiator fins reduce
the cooling performance, causing overheating.
Make it a rule to check the radiator fins daily and
clean as needed.
Note that a typical radiator is shown in Figure 5-10
for illustrative purposes only.
• Blow off dirt and dust from fins and radiator with
28 psi (0.19 MPa; 2 kgf/cm 2 ) or less of
compressed air (Figure 5-10, (1)). Be careful
not to damage the fins with the compressed air.
• If there is a large amount of contamination on
the fins, apply detergent, thoroughly clean and
rinse with tap water.
Figure 5-10
Check and Adjust Cooling Fan V-Belt
Check and adjust the cooling fan V-belt every 250
hours of operation after the initial 50 hour V-belt
maintenance. See Check and Adjust Cooling Fan
V-Belt on page 5-19.
Check and Adjust the Governor Lever and
Engine Speed Control
The governor lever and engine speed control
(throttle lever, accelerator pedal etc.), are
connected together by a cable or linkage. If the
cable becomes stretched, or the linkage wears or
loosens, the governor lever may not respond to a
change in the position of the engine speed control.
1. Check that the governor lever (Figure 5-11, (1))
makes firm contact with the high idle stop
(Figure 5-11, (2)) and the low idle speed limit
screw (Figure 5-11, (3)) when the engine
speed control is in the full speed or low idle
speed positions.
A
CAUTION
FLYING OBJECT HAZARD!
• ALWAYS wear eye protection when
servicing the engine and when using
compressed air or high-pressure
water. Dust, flying debris, compressed
air, pressurized water or steam may
injure your eyes.
• Failure to comply may result in minor
or moderate injury.
0000003en
CAUTION
NEVER use high-pressure water or
compressed air at greater than 28 psi
(193 kPa; 19 686 mmAq) or a wire brush
to clean the radiator fins. Radiator fins
damage easily.
0000016en
CAUTION
NEVER attempt to adjust the low or high
idle speed limit screw. This may impair
the safety and performance of the
machine and shorten its life. If the idle
speed limit screws require adjustment,
see your authorized Yanmar industrial
engine dealer or distributor.
0000017en
FULL
LOW
0000085A
(1)
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