Checking Rotor Play; Waste Gate Valve Test - Yanmar 3TNV82A Service Manual

TURBOCHARGER

Checking Rotor Play

Note: If rotor play measurements are not within specification, replace the turbocharger assembly or have it
repaired by a qualified facility.
Rotor Play
RHF5
0.0011 - 0.0024 in.
End Play
(0.03 - 0.06 mm)
0.0031 - 0.0051 in.
Run-out
(0.08 - 0.13 mm)
To Check Rotor End Play:
1. Set up a dial indicator as shown (Figure 10-4).
2. Manually move the rotor end-to-end while
observing indicated readings. Replace the
turbocharger if end play measurements are
outside specified limits. See table above.
(1)
(2)
(3)
Figure 10-4
To Check Rotor Run-out:
1. Set up a dial indicator as shown (Figure 10-5).
2. Manually rotate the rotor while observing
indicated limits. Replace the turbocharger if
run-out measurements are outside specified
limits. See table above.
10-14
Standard Dimension
RHB31
0.0009 - 0.0021 in. 0.0012 - 0.0024 in.
(0.022 - 0.053 mm) (0.03 - 0.06 mm)
0.0024 - 0.0037 in. 0.0031 - 0.0051 in.
(0.061 - 0.093 mm) (0.08 - 0.13 mm)

Waste Gate Valve Test

Before reinstalling the turbocharger, verify the
0000080A
operation of the waste gate valve. Poor waste gate
operation will adversely affect the engine
performance.
RHB51 RHF5
0.0044 in.
(0.09 mm)
0.007 in.
(0.17 mm)
(1)
(4)
(3)
Figure 10-5
CAUTION
If the waste valve does not meet
specifications, replace the turbocharger
or have it repaired by a qualified repair
facility.
TNV DI Service Manual
Periodic Inspection
Wear Limit
RHB31 RHB51
0.0028 in. 0.0035 in.
(0.07 mm) (0.09 mm)
0.0047 in. 0.0067 in.
(0.12 mm) (0.17 mm)
(2)
0000081A
0000078en