Yanmar 4LHA-HTP Operation Manual page 526

Chapter 6 Cooling Water System
3. Fresh Water Pump
Measuring clearance between impeller and pump body.
Measuring clearance between impeller and pump body
bracket.
Clearance between
impeller and body (0.0118 ~ 0.0433)
Clearance between
impeller and plate
Thickness gauge
Straightedge
Thickness gauge
mm (in.)
Standard Wear limit
0.3 ~ 1.1
1.5
(0.0590)
1.5
(0.0590)
S-3
,4LHA Series