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Engine performance issues – Cub Cadet 4 x 4 Volunteer User Manual

Page 267

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Chapter 8 - Caterpillar Engine and Related Systems

263

14.

Tighten the cable clamp screw.

15.

Release and depress the throttle pedal fully:

15a. When released, the governor arm should

rest against the stop screw.

15b. When fully depressed, the governor arm

should contact the high-end stop screw.
Watch the cable bracket as the arm con-
tacts the screw. The bracket should not
move. See Figure 8.119.

15c. If the bracket moves, loosen the cable

clamp and move the cable housing
slightly closer to the injector pump to cre-
ate slack in the cable, then tighten the
cable clamp screw.

16.

Start the engine and confirm that the engine
idles at 1,200 RPM and reaches 3,600 RPM at
wide-open throttle.

17.

Test the operation of the vehicle in a safe area
that is free of obstacles, hazards, or by-standers
before returning it to service. If the cable and
governor adjustment methods are unsuccessful,
engine performance issues or parasitic loads
must be fixed before adjustment will be effective.

Tighten the clamp screw.

Re-check the operation.

Figure 8.119

Throttle arm against
high-speed
stop screw:
* coincides with end
of throttle pedal
travel
* does not bow
cable bracket

High-speed
stop screw

Cable bracket

ENGINE PERFORMANCE ISSUES

1.

If the over-temp light on the panel, or oil pres-
sure light on the instrument cluster come-on,
and the cause cannot be found or eliminated
using non-intrusive means, contact the partner-
ing Caterpillar dealer.

2.

If any unusual noises issue from within the
engine, and they cannot be identified and elimi-
nated using non-intrusive means, contact the
partnering Caterpillar dealer.

3.

If the engine will not start, and external causes
have been eliminated, contact the partnering
Caterpillar dealer.

4.

If the engine exhibits any signs of premature or
heavy wear that cannot be identified and cor-
rected using non intrusive means, contact the
partnering Caterpillar dealer.

4a. Hard starting, particularly in lower ambient

temperatures.

4b. Excessive oil consumption.

4c. Unusual smoke or steam issuing from the

exhaust system.

5.

If the engine runs unusually roughly it is likely
that one cylinder is not creating as much power
as the other two.

No combustion or poor combustion will produce
less heat.