Komatsu D32E-1 Shop Manual page 408

FINAL DRIVE
SEAL INSPECTION
1. Check condition of rubber seal rings. If any sign of wear,
scratches, nicks, cuts, etc. replace complete seal. Inspect
condition of metal ring seal surfaces as follows. Highly polished
surfaces of rings must be free of chips, pocks and deep
scratches.
2. Narrow highly polished sealing bank must be within outer half of
sealing face.
3. Narrow band must be uniform and concentric with ID and OD.
If metal rings do not conform to these specifications, discard
seal and replace with new.
4. If metal rings conform to specifications above, clean and check
rings as follows.
Remove any corrosion or hardened material that may exist on
surface A. Use a scraper and/or any stiff bristled fiber brush
to remove this material from entire surface. Wash rings with
non flammable solvent to remove all oil and wipe dry. Use a
lint free wiper to remove all traces of oil or grease from all
surfaces. Apply a thin coat of clean Grade 30 oil on sealing
face of metal rings. Do not allow oil to wet other surfaces.
Slide sealing faces of two metal rings together. Bottom ring
should cling to top ring for a minimum of two seconds when
lifted by top ring. If they fail to cling, discard seal and replace
with new.
7F - 24
METAL TYPE FACE SEALS