Disassemble/assemble coolant pump

AR20.10-W-1401C

29.3.06

ENGINE 457.9 in MODELS 374, 375, 940, 942, 943, 944, 958

W20.10-1027-05

Illustrated on model 944

1 Flange

2 Circlip

3 Bearing shaft

4 Coolant pump housing

5 Cassette-type seal

6 Impeller

	Removing
1	Remove coolant pump		AR20.10-W-1271C
	Disassemble
2	Disassemble coolant pump		AR20.10-W-1401-02C
			*321589006300
			*WE58.40-Z-1002-12A
	Assemble
3	Assemble coolant pump		AR20.10-W-1401-03C
			*BE20.10-N-1001-01H
			*BE20.10-N-1002-01H
			*352589081500
			*WH58.30-Z-1004-12A
			*WH58.30-Z-1006-12A
			*WE58.40-Z-1002-12A
	Service Information: Special tool modification		SI58.20-W-0004B
	Install
4	Install coolant pump		AR20.10-W-1271C

Inspection and setting data of coolant pump

Number	Designation		Engine 457.9


BE20.10-N-1001-01H	Gap between impeller and coolant pump housing (A)	mm	0.6...1.0
BE20.10-N-1002-01H	Distance between coolant pump housing and flange (B)	mm	100

352 589 08 15 00

Drift

Thrust piece

321 589 00 63 00

Commercially available tools

Workshop equipment

WE58.40-Z-1002-12A

Stationary workshop press 25 t