MTU Detroit Diesel 183 Series Technical Publication page 536

Group 20
Subgroup 1402 Task Description
Page 4
Inspection and repair
Clean all components.
Using the surface crack-testing method and red penetrant dye, check the pump housing, impeller, intermediate
element and bearing housing for checks.
Using the magnetic crack-testing method and fluorescent magnetic powder, check the drive shaft for cracks.
If cracks are detected, the respective parts must be replaced.
Check coolant pump housing and impeller for pitting.
Replace parts if pitting is deeper than 1 mm.
Check drive shaft for wear and damage.
Smooth minor traces of wear and damage with an emery cloth.
Metal-spray sealing surface as per MTU specifications as required.
Check thread for ease of movement; rechase or fit thread insert as required.
Check clamping nut for damage.
Using a taper gauge, check taper seat 1:20, replace shaft as required.
Check sealing surfaces and bearing bore at bearing housing and intermediate element for wear, smooth with emery
cloth as required.
Adjust bore gauge, measure bore for grooved ball bearing in bearing housing.
Using an outside micrometer, measure the bearing seat and fitting diameter on the drive shaft.
If the limit values are exceeded, replace parts.
Replace rotary seal, shaft seal and O-rings at every overhaul.
Always replace angular-contact ball bearings and grooved ball bearings at W6 overhaul.
20080/1 E 98-12