Maeda CC1908S-1 - Troubleshooting

6.20 TROUBLESHOOTING M A E D A Crawler Crane
6-104 5/2020 CC1908S-1
TROUBLESHOOTING
• Make sure you contact us or our sales service agency for the actions marked with ★ in the table.
• Contact us or our sales service agency if you suspect any abnormalities or causes not described here.
• If an error code is displayed on the monitor, refer to "6.21.3 MONITOR ERROR CODES" on P. 6-115
and take the corrective action described there.
• If the monitor does not display correctly, stop using the crane immediately and contact us or our sales
service agency.
MACHINE BODY
Abnormal phenomenon Main causes Corrective action
Travel speed, slewing speed, boom
and hook block operation speed too
slow
Insufficient hydraulic oil
Refer to "6.16.1
PRE-OPERATION
INSPECTION" on P. 6-27 and
replenish the hydraulic oil to the
specified level.
Abnormal noise from pump
(Air suction)
Insufficient hydraulic oil
Refer to "6.16.1
PRE-OPERATION
INSPECTION" on P. 6-27 and
replenish the hydraulic oil to the
specified level.
Hydraulic oil tank strainer
element clogging
Refer to "6.17.12
MAINTENANCE EVERY 5,000
HOURS" on 6-73 and wash.
Hydraulic oil temperature too high
Insufficient hydraulic oil
Refer to "6.16.1
PRE-OPERATION
INSPECTION" on P. 6-27 and
replenish the hydraulic oil to the
specified level.
Fan belt looseness
Refer to "6.17.5
MAINTENANCE EVERY 250
HOURS" on P. 6-54 and adjust
the tension or replace (★).
Oil cooler fin clogging
Refer to "6.17.5
MAINTENANCE EVERY 250
HOURS" on P. 6-54 and clean.
Crawler tracks detach.
Crawler tracks too loose
Refer to "6.18 IRREGULAR
MAINTENANCE" on P. 6-75
and adjust the tension.
Abnormal wear on the sprockets