Operation Manual / A130-M.. - A145-M..
9 Dismantling and fitting / 9.17 Measuring radial clearances N and R
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HZTL4031_EN
Rev.P
February 2022
9.17
Measuring radial clearances N and R
Fig. 61: Measuring clearances N and R
Product
N [mm]
R [mm]
A130-M
0.26 ... 0.60
0.45 ... 0.70
A135-M
0.34 ... 0.70
0.51 ... 0.85
A140-M
0.45 ... 0.90
0.64 ... 1.00
A145-M
0.56 ... 0.95
0.76 ... 1.20
Table 44: Permissible clearances N and R
1. Push the feeler gauges (01) into the gap without clearance, and measure simultaneously
at the top (N1) and the bottom (N2).
2. Calculate clearance N and compare it with the permissible values in the table.
3. Push the feeler gauges (01) into the gap without clearance, and measure simultaneously
at the top (R2) and the bottom (R1).
4. Calculate clearance R and compare it with the permissible values in the table.
CAUTION
Clearances outside the tolerance
Serious damage to engines or property can be caused by clearances outside
the tolerance and excessively worn parts.
u
Have the components assessed and, if necessary, replaced by a Turbo
Systems service station.
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