M A E D A Crawler Crane 6.17 PERIODIC MAINTENANCE
5/2020 CC1908S-1 6-55
[2] Winch gearbox casing oil level
inspection/refilling
WARNING
• Parts will still be hot immediately after
stopping the engine operation. Do not check
the oil level immediately. Wait until the oil
has cooled.
• The oil and plug may fly out if there is
residual pressure inside the case. Slowly
loosen the plug to relieve the pressure.
IMPORTANT
• For details on the oil used, refer to "6.5.1
USE OF FUEL AND LUBRICATING OIL
DEPENDING ON TEMPERATURE" on P.
6-11.
• Inspect the O-ring condition after inspecting
and refilling the oil, then securely tighten the
plug.
• Prepare a hexagonal wrench.
1.
Stop the machine on firm, level ground, and
lower the boom to its lowest position.
2.
Remove the cover (C).
3.
Using a hexagonal wrench, remove the oil
level check plug (G) and check that oil
overflows from the plug hole.
4.
If the oil level is low, remove the oil inlet plug
(F) and replenish oil via the plug hole.
Replenish the oil until it overflows from
the oil level check plug (G) hole.
Wipe clean any spilt oil.
5.
After checking and refilling oil, reattach the oil
inlet plug (F) and oil level check plug (G) and
securely tighten them.
6.
Attach the cover (C).
[3] Fan belt tension inspection/adjustment
[Tension check]
1.
Open the machinery cover (1).
2.
Remove the fan guard (2) covering the
alternator (5).
3.
Press down on the middle of the belt between
the alternator pulley (3) and fan pulley (4) with
your thumb (approximately 98 Nꞏm [10
kgfꞏm]) to ensure that the deflection (a) is
within the prescribed range of 7 mm to 10
mm.
• If measuring using a sonic tensiometer, it
is normal if the value is within the range
101 Hz to 113 Hz.
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