Disassemble/assemble coolant pump · ar2010i1401a · Mercedes-Benz WIS

AR20.10-I-1401A

Disassemble/assemble coolant pump

21.10.11

ENGINES 384.907 in MODEL 397

ENGINES 384.906 /907 in MODEL 684

N20.10-2025-05

1 Sealing flange

2 Radial sealing ring

3 Screw/bolts

4 Flange

5 Sealing ring

6 Grooved ball bearing

7 Shaft

8 Grooved ball bearing

9 Radial sealing ring

10 Coolant pump housing

11 Cassette-type seal

12 Impeller

N20.10-2041-02

A Projection of impeller relative to coolant pump housing

B Gap between impeller and coolant pump housing

C Distance between coolant pump housing and flange

	Removing
1	Remove coolant pump		AR20.10-I-1271A
	Disassemble
2	Pull flange (4) off shaft (7)		*355589003300
3	Remove screw/bolts (3) and sealing flange (1)
4	Remove radial sealing ring (2) from sealing flange (1)		*360589001500
5	Remove sealing ring (5) from coolant pump housing (10)
6	Press shaft (7) of coolant pump housing (10) and remove impeller (12)
	Stationary workshop press 65 t	Workshop press gotis://G_58.2_01.0
7	Press grooved ball bearings (6, 8) off shaft (7)
	Stationary workshop press 65 t	Workshop press gotis://G_58.2_01.0
8	Remove cassette-type seal (11) from coolant pump housing (10)
9	Remove radial sealing ring (9) from coolant pump housing (10)		*321589071500
	Assemble
10	Install new radial sealing ring (9) in the coolant pump housing (10)		*343589021500
11	Fill new grooved ball bearing (6, 8) with multipurpose grease and press onto shaft (7)
	Stationary workshop press 65 t	Workshop press gotis://G_58.2_01.0
			*BR00.45-Z-1008-06A
12	Install new radial sealing ring (2) into sealing flange (1)		*360589001500
13	Push sealing flange (1) together with radial sealing ring (2) onto shaft (7)
14	Press flange (4) onto shaft (7)
	Stationary workshop press 65 t	Workshop press gotis://G_58.2_01.0
15	Push new sealing ring (5) over the grooved ball bearing (6)
16	Fill space between both grooved ball bearings (6, 8) with multipurpose grease		*BR00.45-Z-1008-06A
17	Install assembled shaft (7) in the coolant pump housing (10) and tighten screw/bolts (3)		*BA20.10-N-1006-01I
18	Install new cassette-type seal (11)		*352589081500
19	Press impeller (12) onto the shaft (7)	 Counterhold on shaft (7) during pressing not on the flange (4) or the coolant pump housing (10).
			*BE20.10-N-1001-01F
			*BE20.10-N-1002-01F
			*BE20.10-N-1003-01F
		Feeler gauge
	Stationary workshop press 65 t	Workshop press gotis://G_58.2_01.0
20	Turn flange (4) and check coolant pump for smooth running
	Install
21	Install coolant pump		AR20.10-I-1271A

Test and adjustment values for coolant pump

Number	Designation		Engine 384.906/907


BE20.10-N-1001-01F	Protrusion of impeller to coolant pump housing (A)	mm	0.2
BE20.10-N-1002-01F	Gap between impeller and coolant pump housing (B)	mm	0.2 to 1.0
BE20.10-N-1003-01F	Distance between coolant pump housing and flange (C)	mm	118.5 to 119.5

 Coolant pump, coolant thermostat

Number	Designation	Engine 384.906/ 907


BA20.10-N-1006-01I	Sealing flange on coolant pump housing	30

343 589 02 15 00

Drift

352 589 08 15 00

321 589 07 15 00

360 589 00 15 00

Puller

355 589 00 33 00

Repair materials

Number	Designation	Order number
BR00.45-Z-1008-06A	Silicone-based grease	A 001 989 28 51 10

Referenced documents

ar2010i1271a Removing/installing coolant pump