Yes
No
Step 2
Check the clutch abnormal sound.
(a)
Press the clutch to the end.
(b)
Check whether the abnormal sound stops.
No
clutch system abnormal sound diagnostic,
engine abnormal sound diagnostic
Yes
Step 3
Check the transmission internal components.
(a)
Remove and disassemble the transmission.
(b)
Check for gear group bearing, input shaft gears, each gears /
bearings, main shaft bearings damage.
(c)
Replace the faulty transmission components.
(d)
Confirm whether the system is normal.
Yes
System normal
No
Step 4
Check drive shaft system and front suspension.
(a)
Place transmission in neutral gear and release the hand
brake.
(b)
Lift the vehicle.
(c)
Rotate the wheels. Check the drive axle, drive axle bearings
whether there is abnormal sound.
Note
The vehicle is lifted at this time. The noise may
disappear because the front suspension, drive axle
and its bearings load decrease. Check whether the
abnormal sound appears only when the axle and the
front suspension are under load.
(d)
Replace the damaged drive axle or drive axle bearings.
(e)
Confirm repair completed.
Next
Step 5
System normal.
–
Engage in reverse when driving, there is gear collision or grinding sound.
Remove the transmission. Inspect and replace the faulty gear, synchronizer or the bearing.
–
Engage in reverse when driving, there is a dull metal sound.
Check the clutch and confirm there is no fault. Refer to "Clutch System"
Diagnostic Information and Procedures
. Remove
the transmission. Inspect and replace the faulty synchronizer.
3-48
Manual Transmission
Transmission / Drive Axle
EC718/EC718RV EC715/EC715RV 10/2009
Summary of Contents for EC715 2009
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