Section 03
ENGINE
Subsection 02
(TROUBLESHOOTING)
VMR2004_125_03_02A.FM
03-02-7
CRANKSHAFT AND BALANCER SHAFT
GEARBOX
SYMPTOM
UNUSUAL ENGINE NOISE AND/OR VIBRATIONS.
CONDITION
NORMAL USE.
Test/Inspection
1. Check for possible plain bearing failure.
a. Oil pressure is out of specified values.
Replace damaged parts (refer to LUBRICATION).
b. Connecting rod small end bearing is damaged and/or out of specification.
Replace damaged and/or worn out part(s).
c. Connecting rod big end clearance is out of specification.
Replace damaged and/or worn out part(s).
d. Crankshaft plain bearing MAG/PTO side is damaged and/or out of specification.
Replace crankshaft and plain bearing MAG/PTO at the same time
(refer to CRANKSHAFT).
2. Check ball bearing(s) on balancer shaft end(s).
a. Ball bearing(s) do(es) not move freely.
Replace bearing(s).
3. Check that mark on balancer shaft is aligned with crankshaft position mark.
a. Mark on balancer shaft and crankshaft are not aligned.
Readjust position of balancer shaft and crankshaft
(refer to CRANKSHAFT/BALANCER SHAFT).
SYMPTOM
UNUSUAL ENGINE NOISE AND/OR VIBRATIONS.
CONDITION
NORMAL USE.
Test/Inspection
1. Check oil level in engine.
a. Oil leakage from engine.
Replace damaged gasket(s) and/or oil seal(s), torque screws and refill with oil up
to specified level (refer to TECHNICAL DATA).
2. Check bearings in the gearbox for free movement.
a. Bearing(s) do(es) not move freely.
Replace bearing(s).
3. Check for knocking noise.
a. Tooth of gears are damaged and/or worn.
Replace respective gears.