Mini-Crawler Crane M A E D A Section 5 – PERIODIC MAINTENANCE
1/2019 MC405C-3 5-55
Inspect / Adjust Inlet Valve and Exhaust
Valve Clearance
Inspecting and adjusting the inlet and exhaust
valve clearance requires special tools.
Contact us or our sales service agency.
Maintenance Every 1500 Hours
Perform this maintenance in tandem with
maintenance every 50/100/250/500/1000 hours.
Inspect / Clean / Test Fuel Injector
Inspection, cleaning, and test of the fuel injector
require special tools.
Contact us or our sales service agency.
Check Crankcase Breather
Crankcase breather inspection requires special
tools.
Contact us or our sales service agency.
Maintenance Every 2000 Hours
Perform this maintenance in tandem with
maintenance every 50/100/250/500/1000 hours.
Check / Replace Engine Coolant
WARNING! Replace the coolant when the
engine is cold. If you remove the radiator cap
with the engine at high temperatures, there is
a danger of being burnt by the heated coolant
blowing out.
1. Place the machine on a level surface.
2. Remove the machinery cover as described
in "Removing Machinery Cover" on page 5-
18.
3. Ensure that the surface temperature of the
radiator cap (5) is as low as can be touched
with a bare hand, and slowly turn it until it
comes into contact with the stopper to
relieve the internal pressure.
Fig. 5-116
4. Further, remove the radiator cap (5) while
turning it until it comes into contact with the
stopper.
5. Place a container underneath the drain plug
(4) to collect the coolant.
Fig. 5-117
6. Remove the drain plug (4) and drain the
coolant.
7. After draining, close the drain plug (4), and
inject tap water; when the radiator is filled
with water, start the engine, put it in low
idling state, raise the water temperature to
90 ºC, and run it for approximately 10
minutes.
8. Stop the engine, remove the drain plug (4),
and drain the coolant.
9. After draining, clean it using cleaning agent.
Clean according to instructions provided on
the cleaning agent used.
10. Close the drain plug (4).
11. Start the engine with the radiator cap (5)
removed, and ensure that the engine runs at
low idle for 5 minutes. Release air from the
cooling system with the engine at high idle
for another 5 minutes.
12. Wait for approx. 3 minutes after stopping the
engine. Supply tap water (soft water) to the
radiator through the radiator supply port, up
to the supply port, and close the radiator cap
(5).
13. Drain the coolant in the sub-tank and then
wash the inside.
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