TURBOCHARGER
Maintenance Standards
12/05
6LY3 Service Manual
9-7
© 2007 Yanmar Marine International
Item
Check Item
Limit of Use
Remarks
Turbine Rotor Shaft
(A) Turbine shaft journal O.D.
(E) Turbine-Side Seal Ring Groove Width
(G1) Compressor-Side Seal Ring Groove Width
(G2) Compressor-Side Seal Ring Groove Width
Turbine Rotor Shaft Runout
12.280 mm (0.4835 in.)
1.630 mm (0.0642 in.)
1.750 mm (0.0689 in.)
1.520 mm (0.0598 in.)
0.011 mm (0.0004 in.)
See Turbine Rotor
Shaft on page 9-16
Bearings
(C) Floating Bearing I.D.
(D) Floating Bearing O.D.
(B) Floating Bearing Base I.D.
12.360 mm (0.4866 in.)
16.980 mm (0.6685 in.)
17.110 mm (0.6736 in.)
See Floating
Bearings on
page 9-17
Thrust Bearings
(J) Thrust Bearing Width
(K) Thrust Bushing Groove-to-Groove Dimension
4.480 mm (0.1764 in.)
4.680 mm (0.1845 in.)
See Thrust Bearing
and Oil Thrower on
page 9-16
Seal Ring Insertion Parts
(F) Turbine-Side (Bearing Housing)
(H1) Compressor-Side Seal Plate (Large)
(H2) Compressor-Side Seal Plate (Small)
18.550 mm (0.7303 in.)
16.050 mm (0.6319 in.)
14.050 mm (0.5531 in.)
See Bearing Housing
on page 9-18
Play in Rotor Axial Direction
0.110 mm (0.0043 in.)
See Checking the
Rotor Radial Play on
page 9-11
Maintenance
Standard
0.06 mm-0.09 mm
(0.002-0.003 in.)
Play in Rotor Radial Direction
0.215 mm (0.0084 in.)
See Checking the
Rotor Axial Play on
page 9-10
Maintenance
Standard
0.11 mm-0.18 mm
(0.004-0.007 in.)