Remove/install oil filter bypass valve

AR18.20-W-5050A

4.12.09

ENGINES 904.904 ## up to 016109 in MODEL 670

ENGINES 904.908 ## up to 016109 in MODELS 668, 670

ENGINES 904.9## ## up to 016109 in MODELS 673, 674, 676

W18.20-0002-06

Shown on engine 904.905

1 Oil filter housing

1.1 Oil filter cover

1.2 Oil filter element

1.3 Sealing ring

2 Oil filter bypass valve

3 Spring

4 Sealing ring

5 Screw plug

6 Sealing ring

7 Engine wiring harness

B12 Oil pressure sensor

 	Remove/install
 Danger!	Risk of injury caused by body parts being pinched or crushed as cab is tilted	Ensure that no one is within the tilting range of the cab as it is being tilted. Always tilt the cab all the way to the end position and secure with the safety strut.	AS60.80-Z-0001-01A
1.1	Tilt cab	Model 673, 674, 676
	Notes on tilting the cab		AH60.80-N-0003-01A
1.2	Remove service cover	Model 668, 670
2	Remove right soundproofing on frame	 Only on models 673, 674, 676
3	Remove intake hose	 Only models 668, 670	AR09.10-D-8030D
4	Unscrew oil filter cover (1.1) from oil filter housing (1)	 Engine oil runs from the oil filter housing (1) back into the oil pan after removing the oil filter cover (1.1).
		 Installation: Install new sealing ring (1.3).
			*BA18.20-N-1003-01B
5	Unclip engine wiring harness (7) and remove oil pressure sensor (B12)	 Counterhold screw plug (5), collect engine oil that flows out.
		 Installation: Replace seal (6).
			*BA18.40-N-1001-01C
6	Remove screw plug (5)	 The screw plug (5) is pushed out by the spring (3).
		 Installation: Install new sealing ring (4).
			*BA18.20-N-1004-01B
7	Take out spring (3) and oil filter bypass valve (2) and inspect for damage	 Installation: Check that the oil filter bypass valve (2) is correctly seated in the oil filter housing (1); install spring (3) for this purpose. In the installed condition the spring (3) must project out about 1 cm at the oil filter housing (1). Replace spring (3) and oil filter bypass valve (2).
8	Install in the reverse order
 Danger!	Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns during starting procedure or when working near the engine as it is running	Secure vehicle to prevent it from moving by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
9	Start engine and observe oil pressure gauge with the engine idling	Crank engine with the starter for not more than 90 seconds. Repeat starting procedure after a break of approx. 2 minutes at the earliest. Do not rev up the engine before oil pressure is indicated. The oil pressure gauge must indicate oil pressure after about 10 seconds.	*BE18.00-N-1001-01C
10	Switch off engine and check for leaks
11	Check engine oil level using oil dipstick or on display, correct if necessary	 Observe engine oil grade set in maintenance system or Specifications for Operating Fluids.

Check values for engine oil pressure

Number	Designation			Engines 900.9, 902.9, 904.9, 906.9


BE18.00-N-1001-01C	Engine oil pressure at	Idling speed	bar	0.5
		maximum speed	bar	2.5

 Oil filter

Number	Designation		Engines 900.9, 902.9, 904.9, 906.9


BA18.20-N-1003-01B	Oil filter cover to oil filter housing	Nm	25
BA18.20-N-1004-01B	Screw plug of oil filter bypass valve to oil filter housing	Nm	50

 Oil level sensor, oil pressure sensor

Number	Designation		Engines 900.9, 902.9, 904.9, 906.9


BA18.40-N-1001-01C	Oil pressure sensor to oil filter housing	Nm	25

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