Torque Converter: Service and Repair

Checking Installed Height Of Torque Converter In Transmission Housing

Using a depth gauge, measure the distance "A" between the transmission housing and converter fixing.

Engine Distance
103 9.6mm
104 9.6mm
119 29.8 mm
120 21.6 mm
603 8.7mm
All diesel engines 8.7 mm

If the torque converter is not correctly seated in the transmission housing, this causes irreparable damage to the torque converter and the primary pump.

Checking Torque Converter








Excessive engine speeds which cause overspeed damage to the engine, can also result in permanent widening of the torque converter. This then fouls the primary pump and damages the radial seal ring.

The overall height of the torque converter must therefore be measured each time the engine is damaged due to overspeed.

Place the torque converter on a measuring plate with the primary pump flange downwards and measure dimension "A". If dimension "A" is less than 121.5 mm, the torque converter can be reused; if the measured value is greater, the torque converter should be replaced.

NOTE: If it is necessary to replace the torque converter, the primary pump radial seal ring is also to he replaced.

Flushing Out Torque Converter





If the transmission oil is burnt, interspersed with lining abrasion and/or metal swarf, the torque converter, oil cooler lines and oil oooler must be flushed out.

Fill torque converter hall full with ATF oil. Insert flushing mandrel (63) and drive at low speed for approx. 2 minutes using a hand drill. Then drain ATF oil through a clean cloth via the drain plug and allow the oil to drip through.

If after this there is metal swarf in the cloth, the torque converter must be replaced.





Screw oil cooler with oil cooler lines (49) onto the injector (064) and flush out with ATF oil ensuring that the transmission oil flows freely. Then blow out oil cooler with oil cooler lines with compressed air.