Checking the shift point of the cooling system - AR20.00-P-1020AO
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engine 120 in MODELS 129, 140
| Shift points for coolant thermostat | *BE20.10-P-1001-02A *BE20.10-P-1002-02A *BE20.10-P-1003-02A |
||
| Shift points for fan clutch, additional fan | *BE20.40-P-1001-01A | ||
| Shift points for air conditioning | *BE83.00-P-1001-01A | ||
| Cap switch points | *BE20.30-P-1004-01A | ||
| Shift points for transmission oil cooling | Model 140 | *BE27.55-P-1001-01A |
COOLANT THERMOSTAT
| Number | Designation | Engines 103, 104, 111, 120 | |
|---|---|---|---|
| BE20.10-P-1001-02A | Start of opening | °C | 85...89 |
| BE20.10-P-1002-02A | Minimum stroke | °C | 102 |
| mm | 8 | ||
| BE20.10-P-1003-02A | Thermostat bypass valve dia. | mm | 43 |
TEST VALUES FOR FAN, FAN CLUTCH
| Number | Designation | Engine 120 in model 129 | Engine 120 in model 140 | |||
|---|---|---|---|---|---|---|
| BE20.40-P-1001-01A | Shift points for cooling system | Viscous fan clutch | Shift point for cooling air temperature | °C | 96±4 | 96±4 |
| Additional fan cut-in | On switch "ON" | Km/h | 40 | - | ||
| Cut-in "OFF" | km/h | 70 | - | |||
| for outside air temperature | °C | ≥ 30 | - | |||
| for outside air temperature "OFF" | °C | - | ≤ 5 | |||
| for outside air temperature "ON" | °C | - | ≥ 10 | |||
| for coolant temperature | °C | 103/95 | 95/92 | |||
| for pressure in the refrigerant circuit | bar | 14/12 | 14/12 | |||
| Additional fan fully switched on | for coolant temperature | °C | 115/110 | 110/107 | ||
| for pressure in the refrigerant circuit (high pressure side) | bar | 20/14 | 20/17 | |||
TEST VALUES FOR SWITCH POINTS FOR AIR CONDITIONING
| Number | Designation | Models 129, 140 with engine 120 | ||
|---|---|---|---|---|
| BE83.00-P-1001-01A | Air conditioning | Operating time cycles | % | 50 |
| Cycles "ON" | S | 20 | ||
| Cycle "OFF" | S | 20 | ||
| Cycle for coolant temperature. | °C | 123 | ||
| EMERGENCY STOP | °C | 127±1 | ||
CAP OF RADIATOR OR EXPANSION RESERVOIR
| Number | Designation | 2-stage cap | ||
|---|---|---|---|---|
| BE20.30-P-1004-01A | Pressure relief valve opens | 1st stage | bar gage | 1.4 (± 1) |
| Coolant temp. | ≥ 130/134 | |||
| 2nd stage | bar gage | 2.0 (± 1) | ||
| Coolant temp. | ≥ 137/143 | |||
TEST VALUES FOR TRANSMISSION OIL COOLING
| Number | Designation | Transmissions 755.3/6 | ||
|---|---|---|---|---|
| BE27.55-P-1001-01A | Switching temperature | E-fan On for transmission oil temperature | °C | 105 |
| E-fan Off for transmission oil temperature | °C | 100 | ||