AR20.20-B-3865A | Remove/install radiator | 12.02.16 |
Cumbustion engine 374 with Vehicle 688.101, 688.102, 688.103, 688.111, 688.118, 688.121, 688.123, 688.133, 688.143, 688.156, 688.157, 688.158, 688.159, 688.174, 688.176, 688.177, 688.187
B20.20-0015-08
1 Radiator
2 Deflector
3 Upper hose
4 Mount nuts
4.1 Mounts
5 Front grille
6 Intake pipe
7 Compensation hose
8 Compensation reservoir
9 Filler cap
10 Connection hose with the thermostat housing
11 Vent pipe
12 Deflector fastening latches
A Coolant level
| Remove and install | ||
Danger! | Risk of personal damages and material loss when starting the engine with the gearbox engaged in a gear. Risk of personal injuries when carrying out jobs with engine hot and running | Make sure the gearbox is in neutral. Wear suitable clothing and pay attention to hot and moving engine parts. | |
1 | Detach the battery negative lead or switch-off the master switch | Unscrew the negative lead bolt at the side rail, avoid removal at battery post terminals. | |
2 | Open the front cover | Operate the lever under the dashboard , at left side and lift the cover. | |
3 | Remove the front grill (5). | Detach the cable from the front cover latch. | |
Danger! | Risk of injuries to the skin and eyes, due to burns caused by vapor or overheated coolant. Risk of poisoning due to coolant ingestion | Open the coolant system only when its temperature is below 90 °C. Open slowly the cover and let the excess pressure go out. Coolant should not be kept in beverage bottles. Use gloves, appropriate clothes and protective glasses. | |
4 | Drain the coolant at the radiator | Catch the coolant in a suitable container and dispose it in an environmentally safe way. | |
Installing:Fill the system with fresh coolant with specified quantity and prepared according to prescribed proportions. | |||
| |||
| Indications on self-locking bolts and nuts | All models | |
5 | Remove the charge-air cooler | Engines 374.953/980/981/984/988/989/991/993/994 . | |
6 | Loosen the clamps and remove the intake pipe (6) from the air filter to the turbocharger | ||
7 | Detach the clamps and hoses (7) between the coolant reservoir (8) and the radiator (1) | ||
8 | Detach the clamps and the hoses between the radiator (1) and the engine | In the upper part loosen and remove the hose (3) located at left side. | |
In the lower part the hose is located at the right side and is connected with the hose (3.1). | |||
9 | Unscrew and remove the bolts and washers from the charge-air cooler pipe upper support | Engines 374.953/980/981/984/988/989/991/993/994 . | |
10 | Loosen and remove the fastening latches (12) of the fan deflector (2) on the radiator and move it away to the engine side | Installing: Fit the deflector in the bottom part and next install new fastening latches. | |
11 | Unscrew and remove the nuts (4) fastening the radiator to the mounts (4.1) on both sides | Installing: Check the mounts and if necessary: replace them. | |
| |||
12 | Remove the radiator (1) | Place the radiator (1) in an adequate place to prevent its damage. | |
Installing: Check the radiator (1) for damages and tightness and if necessary: Clean or replace. | |||
Installing: The radiator support has oblong holes permitting moving the radiator horizontally on the mounts (4.1). | |||
Check the centering of the deflector (2) in relation to the fan: Correct the centering if necessary before fastening the nuts (4) on the mounts (4.1). | |||
| Check | ||
13 | Check the condition of all hoses and clamps of the cooling system | Replace the damaged hoses and clamps. | |
14 | Install in reverse order | After the engine reaches the normal service temperature, complete the coolant level and check the tightness of the system. |
Engine radiator, coolant hoses and lines
Filling quantities for engine cooling
Número | Denominação | Engine 374.9 except 374.985 | |||
BF20.00-B-1001-01A | Cooling system - Approximate level | Do not mix products among the classes | Liters | 14 | |
Anti-corrosive/antifreeze CLASS MB 325.0, MB 325.3 | % | 50 | |||
Anti-corrosion product CLASS MB 312.0 | % | 10 | |||
Product already diluted | Anti-corrosion/antifreeze product CLASS MB 326.3 | Liters | 14 | ||
Pressure in the system | bar | 0,60...0,80 | |||
Vacuum in the system | bar | 0,10 | |||
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