Yanmar — Wear limit of journal outside diameter (A):

A Yanmar service procedure — check it applies to your exact model before use.

Browse Yanmar generators & specs →

Procedure

1. 38 mm Wear limit of seal ring groove width (E):
2. 33 mm (3) Measure runout of the turbine shaft. Replace with a new one if measured runout exceeds
3. 011 mm.
4. 8.6.2.5 Thermal insulation plate @) Check the thermal insulation plate for any contact traces, thermal deformation or corrosion. Replace with a new one if defective. 3-88
5. Engine Overhaul
6. 8.6.2.6 Thrust bushing @, oil thrower @ and thrust bearing @ Thrust bushing G Check each part for wear, surface defect and dis- \ (LL A coloration. Replace with a new one if defective even | L if dimensions G and K are within the wear limit. re i « (1) Thrust bushing @ > | Lo it thrower (2) (3) Measure the seal ring groove width (K) of the thrust busing. Replace with a new one if the measured value exceeds the wear limit. (Measuring dimensions of thrust bushing)
7. 8.6.2.7 Floating bearing@) (1) (2) Check the floating bearing for abnormal wear, discoloration or surface defect. Replace witha new one if defective. Measure inside diameter (C) and outside diameter (D) of the bearing. If it exceeds the wear limit, replace.
8. Engine Overhaul
9. 8.6.2.8 Bearing housingG) (1) Check the castings surface for separation, dents and cracks caused by oxidation degradation.
10. 8.6.2.9 Seal plate @ (1) Check the seal plate for any contact traces and defect, dent or cracks of the joint surfaces. Replace with a new one if defective. (2) Measure the seal ring insertion hole (H) on the compressor side. Replace the seal ring with a new one if the measured value exceeds the wear limit.
11. 8.6.2.10 Seal rings @ and
12. 8.6.2.11 Check bolts, etc. for deformation. Replace with new ones if defective. Also, replace the M4 and M8 TORX T screw bolt 69 and@3 with new ones. 3-90 (Measuring dimensions of bearing housing)

Source: manual:Yanmar-6LP-DTE-Service.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.