Remove/install oil spray nozzles (pistons)

AR18.00-W-4000CA

31.7.07

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

W18.00-1027-09

1 Oil spray nozzles

Arrow: Dowel pin

2 Banjo bolt

Modification notes

18.6.07

Oil spray nozzles for piston crown cooling altered - added.

Step 6

	Removing
1	Remove oil pan		AR01.45-W-7500E
2	Attach turning device for engine		AR03.30-W-1600-03C
			*BA01.60-N-1003-01M
			*904589046300
3	Rotate crankshaft with turning device until the oil spray nozzle to be removed (1) is accessible.
4	Unscrew banjo bolt (2) and remove oil spray nozzle (1)
	Checking
5	Check oil splasher pipe and dowel pin (arrow) on oil spray nozzle (1) by means of a visual inspection	 The oil spray nozzle (1) must not be damaged and the oil splasher pipe must not be bent or clogged. The piston crown will not be adequately cooled from below otherwise. This can lead to heat damage on the piston or a piston jamming.
	Install
6	Install oil spray nozzle (1) and screw tight with banjo bolt (2)	 The dowel pin (arrow) at oil spray nozzle (1) must engage in hole in crankcase.
			*BA18.00-N-1001-01H
	Oil spray nozzles for piston crown cooling altered	As of engine end no. 051237.	BT18.00-W-0001-01C
7	Turn crankshaft with turning device until other oil spray nozzles (1) can be installed
8	Detach turning device for engine		AR03.30-W-1600-03C
			*BA01.60-N-1001-01M
9	Installing oil pan		AR01.45-W-7500E

 Timing case

Number	Designation		Engine 457.9


BA01.60-N-1001-01M	Bolt, inspection hole cover to timing case	Nm	25
BA01.60-N-1003-01M	Bolt, turning device to timing case	Nm	25

 Engine lubrication, engine oil cooling, general

Number	Designation		Engine 457.9


BA18.00-N-1001-01H	Banjo bolt, oil spray nozzle (piston cooling) to crankcase	Nm	40

Cranking device

904 589 04 63 00