Drive Belt: Testing and Inspection

WM 137801 Checking drive belt

Preliminary work

1. Remove intake pipe from air cleaner to engine. -> 243519 Removing and installing air box for throttle housing on DFI engines (intake pipes upstream of throttle valve) - section on "Removing" Service and Repair

Checking drive belt

Information

- If spark plugs must be changed in the course of maintenance operations, the drive belt should be checked when the spark plugs are removed. The engine can then be cranked easier.

1. Mark the rolling direction of the drive belt with chalk. => Marking the drive belt





Marking the drive belt

2. Turn engine at the vibration balancer in the rolling direction using a socket wrench until the chalk mark is at the same position again. While turning at the crankshaft, check the drive belt at the deflection rollers for signs of damage.
3. When turning the engine, check deflection rollers for smooth operation, intact running track and play. Replace noisy and damaged rollers.

Subsequent work

1. Install intake pipe. -> 243519 Removing and installing air box for throttle housing on DFI engines (intake pipes upstream of throttle valve) - section on "Installing" Service and Repair