ar2735d0340a

Dismantling and assembling shift valve body

Type ar · topic 27.35 · version 0100 · 1999-04-06

Applies to: TRANSMISSION 723.345 in MODEL 668, 670

Where it sits

Function group 2 Chassis › 27 Automatic transmission › 27.35 Valve body — Series 668 · Series 670

EinPAS 17 Drivetrain/axle › 17.20 Transmission › 17.20.35 Controller unit/timing case/oil distributor plate — Series 668 · Series 670

Also applies to engines/gearboxes: 723 345

AR27.35-D-0340A

Dismantling and assembling shift valve body

23.7.98

TRANSMISSION 723.345 in MODEL 668, 670

Dismantling and assembling shift valve body

L27.30-0002-09

Modulator

1 Hexagon bolt

2 Modulator valve housing

3 Actuating rod

4 Valve

5 Spring

6 Adjusting ring

7 Journal

8 Separator plate

Holding governor valve

9 Valve

10 Spring

11 Pin

12 Washer

13 Adjusting ring

14 Range selector lever valve

1st-2nd gear shift valve

15 Pin

16 Valve

17 Valve

18 Spring

19 Stop

20 Adjusting ring

2nd-3rd gear shift valve

21 Pin

22 Valve

23 Valve

46 Strainer

1st-2nd gear relay valve

47 Valve

48 Spring

49 Spacer

2nd-3rd gear relay valve

50 Valve

51 Spring

52 Shut-off valve

4th gear clutch trimmer valve

53 Valve

54 Plug

55 Outer spring

56 Inner spring

57 Shut-off valve

58 Cover

59 Hexagon bolt

2nd gear clutch trimmer valve

60 Valve

61 Plug

62 Outer spring

63 Inner spring

64 Shut-off valve

24 Spring

25 Stop

26 Adjusting ring

3rd-4th gear shift valve

27 Pin

28 Valve

29 Valve

30 Spring

31 Stop

32 Adjusting ring

3rd-4th gear relay valve

33 Pin

34 Valve

35 Spring

36 Shut-off valve

Trimmer governor valve

37 Pin

38 Valve

39 Spring

40 Stop

41 Pin

Sequence valve

42 Spring

43 Stop pin

44 Valve

45 Pin

Accumulator valve

65 Spring

66 Shut-off valve

67 Valve

3rd gear clutch trimmer valve

73 Valve

74 Plug

75 Spring

76 Shut-off valve

77 Shift valve body

1st gear clutch trimmer valve

68 Valve

69 Plug

70 Outer spring

71 Inner spring

72 Shut-off valve

Removing

1

Remove shift valve body

AR27.35-D-0320B

Dismantling, assembling

Individual parts of valves must not be mixed up, mark if necessary.

2

Detach modulator valve housing (2)

Bolt, modulator valve housing to shift valve body

*BA27.35-N-1003-01C

3

Remove separator plate (8)

Observe sequence valve (44).

4

Remove sequence valve (44), spring (42) and stop pin (43)

5

Detach cover (58) for trimmer valves

Cover is spring-loaded.

Bolt, trimmer valves cover to shift valve body

*BA27.35-N-1002-01C

6

Remove clutch valve units

AR27.35-D-0340-03A

7

Remove accumulator valve (67), spring (65) and shut-off valve (66)

8

Remove pin (45) in front of shut-off valve (52)

Shut-off valve (52) is spring-loaded

9

Remove shut-off valve (52), spring (51) and relay valve (50) for 2-3 gear shift

10

Remove pin (45) in front of spacer (49)

Spacer (49) is spring-loaded.

11

Remove spacer (49), spring (48) and relay valve (47) for 1st-2nd gear shift

12

Remove strainer (46)

Installation: Replace strainer.

13

Note latching position of adjusting ring (6) in modulator valve housing (2)

14

Remove pin (7), adjusting ring (6), spring (5), valve (4) and actuating rod (3)

15

15

Remove shift/control valves

AR27.35-D-0340-04A

Testing

16

Clean all parts, check for wear and replace if necessary.

Use fluff-free cloths. Always pay attention to cleanliness when working on shift valve body.

17

Assemble in reverse order.

Lubricate all parts with ATF transmission fluid before installing.

Installing

18

Install shift valve body

AR27.35-D-0320B

Shift valve body

Number

Designation

Transmission 723.345

BA27.35-N-1002-01C

Bolt, cover of trimmer valves to shift valve body

Nm

13

BA27.35-N-1003-01C

Bolt, modulator valve housing to shift valve body

Nm

15

Referenced documents