Fluid Pump: Service and Repair

Transmission Oil Pump

Removing

Proceed as follows:

Risk of transmission damage.

• Do not run engine or tow vehicle with oil pan removed or without transmission fluid.

• Observe cleanliness rules when working on transmissions. Refer to => [ Clean Working Conditions ] Clean Working Conditions.

• Observe general repair notes. Refer to => [ Repair Instructions ] Repair Instructions.

- Drain gear oil. Refer to => [ Transmission Fluid, Changing and Filling ] Transmission Fluid, Changing and Filling and leave Used Oil Collecting and Extracting Device (V.A.G 1782) below.

- Remove left noise insulation - arrows -.





- Remove bolts - arrow - and remove transmission oil pump cover - A - while letting gear oil remaining in cover drain into Used Oil Collecting and Extracting Device (V.A.G 1782).





- Remove bolts - arrows - and remove transmission oil pump - 1 -.





Installing

• Tightening specifications, refer to => [ Oil Pan, Mechatronic, and Transmission Oil Pump Assembly Overview ] Description and Operation, => [ Transmission Oil Pump Cover Tightening Sequence ] Description and Operation

Installation is in reverse order of removal, note the following:

• Replace transmission oil pump bolts and pump cover bolts.

• Replace seal - B - and transmission oil pump cover.





- Check whether alignment pins - C - are inserted in transmission housing.

- Slide transmission oil pump input shaft - A - into transmission as far as stop by turning shaft slightly.

• If transmission oil pump input shaft - A - is inserted correctly, dimension - a - = approximately 23 mm.





- If there are metal shavings on sensor wheel - B -, remove shavings, but sensor wheel must not be demagnetized.

- Remove paper seal between transmission oil pump and transmission.

- Remove rest of paper seal and clean inside of transmission.

- Clean sealing surfaces; they must be free from oil or grease.

- Insert new paper seal between transmission oil pump and transmission, secure with gear oil if necessary.

- Place transmission oil pump - 1 - on input shaft and tighten => [ Transmission Oil Pump Tightening
Sequence ] Description and Operation





• Different bolt versions - A or B -, observe tightening procedure => [ Transmission Oil Pump Tightening
Sequence ] Description and Operation

- Clean transmission oil pump cover sealing surface on transmission housing.





- Position transmission oil pump cover - A - and tighten => [ Transmission Oil Pump Cover Tightening Sequence ] Description and Operation

- Top off transmission oil. Refer to => [ Transmission Fluid, Changing and Filling ] Transmission Fluid, Changing and Filling and check oil level => [ Transmission Fluid, Changing and Filling ] Transmission Fluid, Changing and Filling.