Multiquip AP6 Series - Manual (Page 56)

PAGE 56 — AP6/AP8 SERIES TRASH PUMPS • OPERATION AND PARTS MANUAL — REV. #0 (06/11/14)
MAINTENANCE (ENGINE)
Radiator/Cooling System
Coolant (Antifreeze/Summer Coolant/Water)
John Deere recommends antifreeze/summer coolant for use
in their engines, which can be purchased in concentrate (and
mixed with 50% demineralized water) or pre-diluted. See the
John Deere Operator's Manual for further details.
Day-to-day addition of coolant is done via the radiator.
When adding coolant to the radiator, DO NOT remove the
radiator cap until the unit has completely cooled. Reference
Table 3 for coolant capacity.
Operation in Freezing Weather
When operating in freezing weather, be certain the proper
amount of antifreeze has been added.
Flushing Radiator and Replacing Coolant
1. Remove radiator cap.
2. Open radiator drain cock located at the bottom of the
radiator and drain coolant into a suitable container.
3. Check hoses for softening and kinks. Check clamps
for signs of leakage.
4. Flush the radiator by running clean tap water through
radiator until signs of rust and dirt are removed. DO
NOT clean radiator core with any objects, such as a
screwdriver.
5. Replace with coolant as recommended by the engine
manufacturer.
6. Tighten drain cock and close radiator cap tightly.
WARNING
If adding coolant/antifreeze mix to the
radiator, DO NOT remove the radiator cap
until the unit has completely cooled. The
possibility of hot! coolant exists which can
cause severe burns.
Table 18. Anti-Freeze Operating Temperatures
Vol %
Anti-
Freeze
Freezing Point Boiling Point
°C °F °C °F
50 -37 -34 108 226
Radiator Maintenance
1. Check radiator for leaks that would indicate corrosion
or damage.
2. Check coolant level daily. Top off as necessary. Always
use recommended coolant/antifreeze. Use the mixing
ratios specified by the coolant/antifreeze manufacturer
or reference Table 18. Replace coolant/antifreeze at
least once a year.
3. Check radiator hoses for fatigue or cracking. Replace
any defective hoses immediately.
4. Check radiator cap seal and replace as necessary.
5. Blow off dirt and dust from fins and radiator with 28
psi (193 kPa) or less of compressed air (Figure 53) Be
careful not to damage the fins with the compressed air.
Figure 53. Radiator Cleaning
6. If there is a large amount of contamination on the fins,
use detergent to clean and rinse thoroughly with tap
water.
NOTICE
When using a high pressure washer, stand at least
5 feet (1.5 meters) away from the radiator to prevent
damage to the fins.
RADIATOR
COOLING
FINS
COMPRESSED AIR
OR
PRESSURE WASHER
CAP
NOTICE
NEVER use high-pressure water or compressed air at
greater than 28 psi (193 kPa) or a wire brush to clean
the radiator fins. Radiator fins damage easily.