Maeda MC405C-3 - Replace Oil in Hydraulic Oil Tank

Mini-Crawler Crane M A E D A Section 5 – PERIODIC MAINTENANCE
1/2019 MC405C-3 5-51
Maintenance Every 1000 Hours
Perform this maintenance in tandem with
maintenance every 50/100/250/500 hours.
Replace Oil in Hydraulic Oil Tank
WARNING!
• All the parts will be at elevated
temperatures immediately after engine
operation, which urges you not to replace
oil. Always perform replacement with the oil
cold.
• Potential gush of oil may occur upon
removing the filler cap of the hydraulic oil
tank.
Be sure to relieve internal pressure by
slowly rotating the filler cap before cap
removal.
• Make sure the filler cap is closed properly
after replenishment of the oil.
Potential fall of the filler cap during
operation may occur if disregarded, which
could cause boiling oil to gush that results
in burns.
CAUTION:
• For more information on the which oil to be
used, see "LUBRICATING OIL" on page 5-
14.
• Place the machine in travel position for oil
quantity inspection. Oil quantity inspection
with the machine in working position may
deceive your eyes to deem the quantity of
oil low. Owing to improper judgment, the oil
may be supplied at excessive amount.
• The engine must be at halt until piping and
hydraulic equipment is filled with oil after
replacement of the hydraulic oil filter.
• Oil replenished should remain below "H"
(upper limit) on the level gauge. Excessive
oil replenishment may cause the oil to gush
from the air breather during machine
travelling and crane operation, which could
result in burns.
• Keep impurities out of the filler cap when
replenishing oil.
• Oil drain pan: An 70-litre container
• Quantity of oil for replacement: 55L
1. Place the machine on a level surface.
2. Remove the machinery cover as described
in "Removing Machinery Cover" on page 5-
18.
3. Remove the filler cap (F) located on top of
the hydraulic oil tank.
Fig. 5-104
4. Place a drain pan directly underneath the
drain plug (P) to receive drained oil.
Fig. 5-105
5. Remove the drain plug (P) slowly to drain
the oil, keeping from contact with draining
oil.
6. Check the drained oil. If check finds a
considerable amount of metal powder and
foreign objects, contact our sales service
agency
7. Put in the drain plug (P) and secure it.
8. Supply the hydraulic oil to a specified level
point from the filler cap (F), visually checking
the oil level gauge (G).
Fig. 5-106
9. Close the filler cap (F) after replenishment of
the oil.
NOTICE: Wipe off the oil completely if spilled.