MTU — Cylinder liner - Endoscopic examination
Testing & diagnosis
From a MTU operator's manual covering: 12 V 4000 G23, 12 V 4000 G43, 12 V 4000 G63, 12 V 4000 G83, 16 V 4000 G23, 16 V 4000 G43, 16 V 4000 G63, 16 V 4000 G83. Check it applies to your exact model before use.
Applies to: MTU 12 V 4000 G23, MTU 12 V 4000 G43, MTU 12 V 4000 G63, MTU 12 V 4000 G83, MTU 16 V 4000 G23, MTU 16 V 4000 G43, MTU 16 V 4000 G63, MTU 16 V 4000 G83, MTU 12V 4000 G23 engine, MTU 12V 4000 G43 engine, MTU 12V 4000 G63 engine, MTU 12V 4000 G83 engine
Procedure
- Remove cylinder-head cover
- Remove injector
- Turn crankshaft until crankpin of cylinder to be tested has reached BDC
- Insert endoscope into cylinder liner through injector seat
- Compile endoscopy report using the table
- Depending on findings: no action, further examination, or contact Service (liner replacement)
- Install injector
- Install cylinder-head cover
Tools required
- Rigid endoscope Y20097353 Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Full service-parts list: MTU 12 V 4000 G23 →, MTU 12 V 4000 G43 →, MTU 12 V 4000 G63 →, MTU 12 V 4000 G83 →, MTU 16 V 4000 G23 →, MTU 16 V 4000 G63 →, MTU 12V 4000 G23 engine →, MTU 12V 4000 G43 engine →, MTU 12V 4000 G83 engine →, MTU 16V 4000 G83 engine →
Source: MTU operator's 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.