MTU — Battery-charging generator drive - Drive belt replacement
Maintenance · Belt drive
From a MTU operator's manual covering: 12 V 4000 G23, 12 V 4000 G43, 12 V 4000 G63, 12 V 4000 G83, 12 V 4000 Gx3, 12/16V 4000 Gx3, 12V 4000 G23, 12V4000 G23, 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 12 V 4000 Gx3, MTU 12V4000 G23, MTU 16 V 4000 G23, MTU 16 V 4000 G43, MTU 16 V 4000 G63, MTU 16 V 4000 G83, MTU 12V/16V 4000 Gx3 engine
Before you start
- Spring/circlip/tensioning roller preload - risk of injury; only use specified tool and equipment.
Procedure
- Remove guard cover.
- Slacken screws (1) and (2) by half a turn.
- Place socket adapter or box wrench on screw (3) and press belt tensioner in arrow direction as far as it will go.
- Tighten screw (2).
- Remove the used drive belt.
- Fit new drive belt.
- Slacken screw (2) by half a turn (belt tensioner tensions belt).
- Tighten screw (1) to 42 Nm and screw (2) to 60-65 Nm.
- Install guard cover.
- Readjust belt tension after 30 minutes and again after 8 hours engine runtime.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Screw (1) 42 Nm
- Screw (2) 60 to 65 Nm
- Readjust after 30 min and after 8 hours runtime
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 12 V 4000 Gx3 →, MTU 12V4000 G23 →, MTU 16 V 4000 G23 →, MTU 16 V 4000 G63 →
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.