AR18.30-W-6840A | Remove/install oil-water heat exchanger | 7.10.10 |
ENGINES 904.9 in MODEL 374, 375, 673, 674, 676, 958, 970, 972, 975, 976
W18.30-1006-06
From engine end no. 040488 to engine end no. 301576
6 Oil/water heat exchanger
6.1 Cover
6.2 Gasket
6.3 Heat exchanger
6.4 Bolt
7 Gasket
8 Electrical connector
9 Oil filter housing
9.1 Oil filter cover
9.2 Sealing ring
9.3 Oil filter element
10 Vent line
11 Oil pressure line (turbocharger)
B110 Oil pressure and oil temperature combination sensor
W18.30-1005-08
As of engine end no. 301577
1 Exhaust manifold
2 Intake hose
3 Charge air pipe
B11 Engine oil temperature sensor
B12 Oil pressure sensor
4 Electrical connector
5 Electrical connector
Modification notes
| Remove/install | ||
1 | Switch off ignition | ||
Danger! | Risk of injury caused by body parts being pinched or crushed as cab is tilted | Ensure that no one is within tilting range of cab as it is being tilted. Always tilt cab all the way to end position and secure with safety strut. | |
2 | Tilt cab | Installation: Only tilt cab back after the leak test has been conducted | |
| Notes on tilting the cab | ||
3 | Remove right soundproofing on frame | ||
Danger! | Risk of injury to skin and eyes caused by scalding from contact with hot coolant spray. Risk of poisoning caused by swallowing coolant. | Do not open cooling system unless coolant temperature is below 90°C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers. Wear protective gloves, protective clothing and safety glasses. | |
4 | Drain coolant | ||
| Notes on coolant | ||
5 | Unscrew oil filter cover (9.1) from oil filter housing (9) and remove | Engine oil runs from the oil filter housing (9) back into the oil pan after pulling out the oil filter cover (9.1). | |
Installation: Install new sealing ring (9.2). | |||
| |||
6 | Remove charge air pipe (3) | Model 673, 674, 676 | |
Model 374, 375, 958, 970, 972, 975, 976 | |||
7 | Remove intake hose (2) | Installation: Only install intake hose (2) once the oil circuit has been filled. | |
8.1 | Disconnect electrical connector (8) on oil pressure and oil temperature combination sensor (B110) | From engine end no. 040488 to engine end no. 301576 | |
8.2 | Disconnect electrical connector (4) on engine oil temperature sensor (B11) and electrical connector (5) on oil pressure sensor (B12) | As of engine end no. 301577 | |
9 | Remove vent line (10) | | |
10 | Remove oil pressure line (11) on turbocharger | Catch any escaping engine oil and seal off oil holes. | |
Installation: Replace sealing rings. | |||
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| |||
11 | Slacken exhaust manifold (1) from cylinder head and push away | Unscrew bolts by about 4 mm. | |
Installation: Measure shank length of the bolts; replace bolt if necessary. Remove and measure the bolts one by one. | |||
| |||
12 | Remove oil-water heat exchanger (6) | Collect coolant and engine oil that flows out. | |
Installation: Replace seal (7). | |||
| |||
13 | Remove cover (6.1) from heat exchanger (6.3) | Installation: Replace seal (6.2). Only tighten bolt (6.4) after installing cover (6.1) and heat exchanger (6.3) on crankcase. | |
| |||
14 | Install in the reverse order | ||
15 | Filling the engine oil circuit | ||
16 | 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. | |
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. | |
17 | 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. | |
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. | |
18 | Check leaktightness of exhaust manifold on cylinder head | In the event of leaks: | |
Replace exhaust manifold gasket. | |||
19 | Switch off engine and check for leaks | Visual inspection. |
Check values for exhaust manifold
Number | Designation | Engines | ||
BE14.10-N-1001-01A | Exhaust manifold bolts | Thread diameter | M | 10 |
Shank length | mm | 47.0 | ||
Permissible shank length | mm | 47.5 | ||
Check values for engine oil pressure
Number | Designation | Engines | ||
BE18.00-N-1001-01C | Engine oil pressure at | Idling speed | bar | 0.5 |
maximum speed | bar | 2.5 | ||
Turbocharger
Number | Designation | Engine | ||
BA09.40-N-1002-01B | Bolt, oil pressure line to turbocharger | M8 | Nm | 40 |
M6 | Nm | 10 | ||
BA09.40-N-1006-01B | Union nut, oil pressure line to turbocharger | M14 | Nm | 30 |
M16 | Nm | 35 | ||
Exhaust manifold
Number | Designation | Engines | ||
BA14.10-N-1001-01B | Bolt, exhaust manifold to cylinder head | Stage 1 | Nm | 10 |
Stage 2 | Nm | 55 | ||
Stage 3 | ° | 90 | ||
Oil filter
Number | Designation | Engines | |
BA18.20-N-1003-01B | Oil filter cover on oil filter housing | Nm | 25 |
Oil cooling system
Number | Designation | Engines | |
BA18.30-N-1001-01C | Bolt, oil-water heat exchanger to crankcase | Nm | 25 |
BA18.30-N-1002-01C | Bolt, housing cover to oil-water heat exchanger | Nm | 25 |
Coolant pump, coolant thermostat
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