WEICHAI WD10 Service Manual - page 101
Service Manual for WD10 Diesel Engine
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Press measuring head of dial indicator against compressor end, push and pull the shaft axially and
record value difference of the indicator. As shown in Fig. 4-54. Required range is 0.088~0.118mm,
if exceeds this range, then it indicates that thrust bearing plate or thrust plate and bearing is worn,
you must find out the cause and eliminate the problem.
Fig. 4-54 Rotor axial movement measuring
(3) Compressor impeller radial clearance checking
Press the compressor impeller radially and measure the maximum and minimum clearance between
compressor impeller and compressor volute (as shown in Fig. 4-55), which should be within
0.4~0.8mm, if exceeds this range, then check the bearing and eliminate the fault.
ATTENTION: Ensure the turbocharger is cold when performing the measurement.
Fig. 4-55 Compressor impeller radial clearance measuring
Routine maintenance: