Automatic transmission fluid and oil filter change

AP27.00-D-2702D

Automatic transmission fluid and oil filter change

10.07.2019

Transmission

723.332 in model 668.3, 670.3

Modification notes

28.08.2008

Automatic transmission fluid as per sheet no. 236.9/.91 of MBBeVo restricted

Operation steps 12 and 16

1

Oil drain screw

2

Transmission filter

3

Filter magnet

5

Oil cooler oil drain screw

Dipstick with cold and hot measuring range

A

Hot measuring range (70 °C to 90 °C)

B

Cold measuring range (20 °C to 30 °C)

Draining

 Warning

Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.

Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.

AS00.00-Z-0005-01A

 Warning

Risk of injury. Skin or eye injuries may result when handling hot or glowing objects.

Wear protective gloves, protective clothing and safety glasses, if necessary.

AS00.00-Z-0002-01A

Notes on automatic transmission

AH27.19-P-0001-01NKB

1

Remove oil dipstick

2

Clean oil pan oil drain screw (1), transmission oil filter (2), oil cooler oil drain screw (5) and bleed screw on oil cooler at top

3

Remove oil pan oil drain screw (1) and oil cooler oil drain screw (5)

 Drain off transmission oil completely when warm.

4

Loosen bleed screw on upper side of oil cooler

5

Unscrew transmission oil filter (2) and remove filter magnet (3)

6

Clean filter magnet (3) and position on new transmission oil filter (2)

 A little metallic wear debris is normal, but there must be no larger particles on the filter magnet.

7

Moisten sealing surface of transmission oil filter (2) and filter magnet (3) with transmission oil

8

Screw on transmission oil filter (2) until sealing ring just touches sealing surface on filter head. Tighten transmission oil filter (2) by hand by another turn


To protect against damage,
do not use tools when tightening transmission oil filter (2) and do not overtighten.

9

Screw in oil pan oil drain screw (1) and oil cooler oil drain screw (5)

 Install new seals.

 Oil drain screw to oil cooler

*BA27.55-N-1001-01C

10

Tighten bleed screw on upper side of oil cooler

 Bleed screw to oil cooler

*BA27.55-N-1002-01C

Pour in

11

Insert funnel into the opening of the transmission oil filler pipe

 Funnel

*126589126300

12

Fill with transmission oil



Up to vehicle end no. N 135 213

BB00.40-P-0236-09A



As of vehicle end no. N 135 214

BB00.40-P-0236-91A

 Automatic transmission fluid (ATF)

*BF27.00-N-1001-01B

13

Insert transmission oil dipstick into transmission oil filler pipe

 Wipe off the transmission oil dipstick using a fluff-free rag (preferably leather).



Check

14

Start engine

 Apply parking brake. Allow the engine to run for approx. 1 min at idle speed.

15

Shift through all selector lever positions

 Operate service brake. Using the selector lever, remain in each position for approx. 20 s. Then shift the transmission back to position "N".

16

Check transmission oil level and correct if necessary



Up to vehicle end no. N 135 213

BB00.40-P-0236-09A



As of vehicle end no. N 135 214

BB00.40-P-0236-91A

 Cold transmission (20 °C to 30 °C): The transmission oil must be within the cold measuring range (B).
Transmission at operating temperature (70 °C to 90 °C): The transmission oil must be within the hot measuring range (A).
Decisive for the correct transmission oil level, which guarantees trouble-free operation of the transmission, is the hot measuring range (A) on a transmission at operating temperature (70 °C to 90 °C).
It is essential to drain excess transmission oil or extract it using a handpump. When suctioning off attention should be paid to extreme cleanliness of the hose and pump, otherwise malfunctions may occur.

 Funnel

*126589126300

 Hand pump

*112589007200

17

Turn off engine

18

Check transmission oil filter (2), oil pan oil drain screw (1) and oil cooler oil drain screw (5) for leaktightness

 Transmission oil cooling

Number

Designation

Transmission 723.332/345/346

BA27.55-N-1001-01C

Oil drain screw to oil cooler

Nm

18

 Transmission oil cooling

Number

Designation

Transmission 723.332/345/346

BA27.55-N-1002-01C

Bleed screw to oil cooler

Nm

18

 Automatic transmission

Number

Designation

Transmission 723.332 in model 668.3, 670.3
with wheelbase 3150/3700 mm

Transmission 723.332 in model 668.3, 670.3
with wheelbase 4250/4800 mm

BF27.00-N-1001-01B

Automatic transmission fluid (ATF)

Filling capacity - complete refill

Liter

14,0

16,0

Filling capacity - oil change

Liter

11,0

13,0

Sheet

BB00.40-P-0236-09A

BB00.40-P-0236-09A

Sheet

BB00.40-P-0236-91A

BB00.40-P-0236-91A