Radiator And Oil Cooler - Jacobsen HR 5111 Parts And Maintenance Manual

4.21 RADIATOR AND OIL COOLER _______________________________________________

!
To prevent serious bodily injury from hot coolant or steam
blow-out, never attempt to remove the radiator cap while
the engine is running. Stop the engine and wait until it is
cool. Even then, use extreme care when removing the
cap.
!
Do not pour cold water into a hot radiator. Do not
operate engine without a proper coolant mixture.
Install cap and tighten securely.
1. Check coolant level daily. Radiator should be full and
recovery bottle should be up to the cold mark.
2. Drain and refill annually. Remove the radiator cap,
open the engine block drain and the radiator drain.
Empty and clean the recovery bottle.
3. Mix clean water with ethylene glycol based anti-
freeze for the coldest ambient temperature. Read
and follow the instructions on the anti-freeze
container and engine manual.
4. Keep the hood and screen clean. Remove leaves or
grass clippings from screen daily.
5. Loosen wing nuts on side of oil cooler and tilt oil
cooler back to cleaning position.
6. Open trap door under the radiator and oil cooler,
then place a piece of cardboard, to act as a
deflector, between the radiator and oil cooler.
!
To prevent burns, do not touch muffler or muffler shield
when opening trap door. Surface temperatures may
exceed 150° F (66° C).
7. Use compressed air, up to 30 psi (206 kPa), to
clean the radiator and oil cooler fins. A special blow
WARNING
CAUTION
WARNING
MAINTENANCE
gun (JAC 5098) is available through an Authorized
Textron Turf Care And Specialty Products Dealer
8. Direct air through the engine side of radiator
towards rear of tractor and through rear of oil cooler
towards the front of tractor.
9. Remove cardboard and return oil cooler to its
upright position. Tighten wing nuts. Clean the entire
compartment underneath the radiator and close trap
door.
10. Check and tighten the fan belt. Replace clamps and
hoses every two years.
11. If you continue to experience engine or hydraulic
system overheating, have to add coolant more than
once a month, or add more than one quart at a
time, have a authorized Textron Turf Care And
Specialty Products Dealer check the cooling system.
Radiator
Direct air through
radiator from
engine side
.
Cardboard
Oil Cooler
Direct air through
oil cooler from
rear
Trap Door
Figure 4E
GB-25
4