W20.20-1055-04
1 Radiator
2 Charge air cooler
3 Heater coolant lines
4 Heating system coolant hoses
5 Condenser 1)
6 Refrigerant line 1)
7 Bracket 1)
1) Only on vehicles with code (H03) air conditioning in front end.
W20.20-1056-09
1 Radiator
2 Charge air cooler
3 Heater coolant lines
8 Sealing on the left
9 Coolant hose
10 Fan shroud
11 Fan
12 Supporting frame
13 Hydraulic motor
21 Coolant hose for heater
22 RH angle bracket
23 Coolant hose
24 Bracket
25 Coolant line
26 Coolant hose for heater
Y66 Proportioning valve, hydrostatic fan
14 Electrical connector
15 Nut
16 Refrigerant lines (only for vehicles with code (H03) Air conditioning in front end)
17 LH angle bracket
18 Coolant line
19 Sealing on the right
20 Coolant hose
W20.20-1057-06
2 Charge air cooler
10 Fan shroud
12 Supporting frame
27 Bolt
28 Charge air pipe
29 Charge air hose (red)
30 Hydraulic line
31 Charge air hose (black)
32 Charge air pipe
33 Hydraulic fluid cooler
Modification notes
| Remove/install | ||
Danger! | Risk of injury to skin or eyes caused by hydraulic fluid spraying out under high pressure. Risk of poisoning caused by swallowing hydraulic fluid | Depressurize the hydraulic system completely before starting any work on the system. Wear protective clothing and safety glasses. | |
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. | |
| Notes on coolant | ||
| Notes on self-locking nuts and bolts | ||
1 | Switch off ignition | ||
2 | Open maintenance flap | ||
3 | Drain coolant | Engine 902.9 with code (MS8) natural gas engine, Engine 906.9 | |
Engine 902.9, without code (MS8) natural gas engine Engine 926.9 | |||
4 | Detach heater coolant hoses (4) from heater coolant lines (3) | ||
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. | |
5 | Tilt cab | Installation: Only tilt cab back after leak test has been conducted. | |
| Notes on tilting the cab | ||
6 | Remove RH and LH soundproofing from top of frame and underride guard soundproofing from bottom of frame | ||
7 | Remove LH seal (8) | ||
8 | Detach heater coolant line (3) and RH seal (19) from radiator (1) | ||
9 | Detach coolant hoses (9, 23) from radiator (1) | ||
10 | Detach heater coolant hoses (21, 26) from heater coolant lines (3) | ||
11 | Detach bracket (24) from heater coolant lines (3) | ||
12 | Detach heater coolant lines (3) from supporting frame (12) | ||
13 | Detach electrical connector (14) at hydrostatic fan (Y66) | ||
14 | Remove upper nuts (15) for supporting frame (12) from charge air cooler (2) | Counterhold bolts. | |
| |||
15 | Remove charge air hose (29) and charge air hose (31) between charge air cooler (2) and charge air pipes (28, 32) | Charge air hose (29) and charge air hose (31) are not interchangeable. | |
| |||
16 | Remove lower bolts (27) for the supporting frame (12) from charge air cooler (2) | Hold nuts | |
| |||
17 | Detach hydraulic fluid cooler (33) from the bottom of charge air cooler (2) and tie it up | Do not disconnect hydraulic line. | |
| |||
18 | Tilt supporting frame (12) with coolant lines (18, 25) and hydraulic engine (13) toward the rear and secure with a tensioning strap | Do not disconnect hydraulic line. | |
19 | Detach fan shroud (10) from radiator (1) and charge air cooler (2) and press off | ||
20 | Prop up the radiator (1) and charge air cooler (2) with a transmission jack and pad | ||
21 | Detach refrigerant lines (16) from LH angle bracket (17) | Only on vehicles with code (H03) Air conditioning in front end. | |
22 | Detach the condenser (5) and bracket (7) of refrigerant lines (6) from charge air cooler (2) and tie condenser (5) to the cab | Only on vehicles with code (H03) Air conditioning in front end. | |
23 | Remove bolts from LH angle bracket (17) and RH angle bracket (22) | ||
24 | Carefully lower the radiator (1) and charge air cooler (2) with the transmission jack | ||
25 | Disconnect coolant hose (20) from radiator (1) | ||
26 | Remove radiator (1) and charge air cooler (2) from the bottom | ||
27 | Separate radiator (1) from charge air cooler (2) and remove detachable parts | Only if replacing radiator (1) or charge air cooler (2). | |
| |||
28 | Install in the reverse order |
Charge air pipe/charge air cooling
Number | Designation | Engine | |
BA09.41-N-1010-01B | Clamp, charge air hose to charge air manifold/charge air pipe and charge air cooler | Nm | 8 |
BA09.41-N-1013-01B | Charge air cooler on radiator | Nm | 25 |
Fan, fan clutch
Number | Designation | Engine | |
BA20.40-N-1007-01G | Supporting frame on charge air cooler | Nm | 25 |
Hydrostatic fan drive
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