Kohler — Honing Cylinder Bores
Repair & overhaul · Cylinder barrel
From a Kohler service manual covering: KT17, KT17 Series II, KT19 Series II, KT21, Kt19. Check it applies to your exact model before use.
Applies to: Kohler Kt19
Before you start
- Make sure the barrel is cool when measuring.
Procedure
- Lower hone into bore and after centering adjust so stones contact walls; use cutting-cooling agent.
- With lower edge of each stone even with lowest edge of bore, start drill and move hone up and down.
- When bore is within .0025" of desired size, replace coarse stones with burnishing stones.
- Continue with burnishing stones until within .0005" of desired size, then use finish stones (220-280) and polish to final size.
- Check bore for roundness, taper and size at top, middle and bottom (two perpendicular measurements at each).
- Clean cylinder wall with soap and hot water, dry, apply light coat of SAE 10 oil.
Tools required
- Cylinder hone Amazon
- Low speed drill press Amazon
- Inside micrometer / telescoping gauge / bore gauge Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Drill speed about 250 RPM and 60 strokes per minute
- .0025" coarse to burnishing
- .0005" burnishing to finish
- Cross-hatch 23-33 degrees off horizontal
Full service-parts list: Kohler Kt19 →
Source: Kohler service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.