Overhaul of on train air conditioning for Class 158 Diesel Multiple Units to include.

Overhaul of Liebherr Air Conditioning Equipment to include all latest Liebherr FMIs including Liebherr coolant vent modification.

Overhaul of Liebherr Alternator Raft Equipment including all FMIs.

Fitment of Liebherr roof module coolant vent modification.

Fitment of Pressure Limiter Modification to Air Conditioning Module Motor.

Change air conditioning control module for an overhauled or improved module.

Replacement of Variable Displacement Pump, Air Conditioning Module Motor, Vehicle Alternator Motor and Engine Mounted Radiator Fan Pump.

Renewal of all hydrostatic hoses.

Propose provide performance information on hydrostatic system.

Overhaul of vehicle mounted extraction fan.

Propose improved sealing, hinge and locking arrangement or seal type for bodyside hopper windows.