Drain/fill in coolant

AP20.00-S-2080-01A	Drain/fill in coolant
	Coolant changed	Engine 272, 642.8, 651 in model 639.### ## as of 888455 Engine 272, 646, 651 in model 636.### ## as of 045979	BT20.00-S-0001-01A

Engine	272.924/939/978, 646.980, 651.940 in model 636
Engine	272.978, 642.890/990, 646.980/981/982/983, 651.940 in model 639

 Crankcase, timing case cover, end cover

Number	Designation		ENGINE 646 in MODEL 636, 639
BA01.40-N-1003-01Q	Coolant drain screw to crankcase	Nm	30

 Engine cooling, general

Number	Designation		Engine 272 in model 636, 639
BA20.00-N-1001-02C	Coolant drain plug to cylinder crankcase	Nm	12

 Cooler, coolant hoses, coolant lines

Number	Designation		Engine 272 in model 636 Engine 272.978 in model 639	Engine 642.890/990 in model 639
BA20.20-N-1001-01B	Drain screw at cooler (reference value)	Nm	3	3

 Cooler, coolant hoses, coolant lines

Number	Designation		Engine 646.980 in model 636 Engine 646.980/981/982/983 in model 639	Engine 651 in model 636 Engine 651.940 in model 639
BA20.20-N-1001-01B	Drain screw at cooler (reference value)	Nm	3	3

 Engine cooling

Number	Designation			Engine 642.890/990 without auxiliary heater and rear heat exchanger	Engine 642.890/990 with auxiliary heater and rear heat exchanger
BF20.00-N-1001-01A	Coolant	Total filling capacity	Liter	11	14
		Corrosion/antifreeze down to -37 °C	Liter	5,5	7
		Corrosion/antifreeze down to -45 °C	Liter	6	7,7
		Sheet		BB00.40-P-0310-01A	BB00.40-P-0310-01A
		Sheet		BB00.40-P-0325-00A	BB00.40-P-0325-00A
		Sheet		BB00.40-P-0325-06A	BB00.40-P-0325-06A
		Sheet		BB00.40-P-0326-06A	BB00.40-P-0326-06A

 Engine cooling

Number	Designation			Engine 646.980/981/982/983 except code H12	Engine 646.980/981/982/983 with code H12
BF20.00-N-1001-01A	Coolant	Total filling capacity	Liter	9	11
		Corrosion/antifreeze down to -37 °C	Liter	4,5	5,5
		Corrosion/antifreeze down to -45 °C	Liter	5	6,1
		Sheet		BB00.40-P-0310-01A	BB00.40-P-0310-01A
		Sheet		BB00.40-P-0325-00A	BB00.40-P-0325-00A
		Sheet		BB00.40-P-0325-06A	BB00.40-P-0325-06A
		Sheet		BB00.40-P-0326-06A	BB00.40-P-0326-06A

 Engine cooling

Number	Designation			Engine 651.940 in model 636, 639 without auxiliary heater	Engine 651.940 in model 636, 639 with auxiliary heater
BF20.00-N-1001-01A	Coolant	Total filling capacity	Liter	6,5	7,5
		Corrosion/antifreeze down to -37 °C	Liter	3,25	3,75
		Corrosion/antifreeze down to -45 °C	Liter	3,75	4,1
		Sheet		BB00.40-P-0310-01A	BB00.40-P-0310-01A
		Sheet		BB00.40-P-0325-00A	BB00.40-P-0325-00A
		Sheet		BB00.40-P-0325-06A	BB00.40-P-0325-06A
		Sheet		BB00.40-P-0326-06A	BB00.40-P-0326-06A

 Engine cooling

Number	Designation			Engine 272 in model 636	Engine 272.978 in model 639 except code H12
BF20.00-N-1001-01K	Coolant	Total filling capacity	Liter	10,6	10,6
		Corrosion/antifreeze down to -37 °C	Liter	5,3	5,3
		Corrosion/antifreeze down to -45 °C	Liter	5,8	5,8
		Sheet		BB00.40-P-0310-01A	BB00.40-P-0310-01A
		Sheet		BB00.40-P-0325-00A	BB00.40-P-0325-00A
		Sheet		BB00.40-P-0325-06A	BB00.40-P-0325-06A
		Sheet		BB00.40-P-0326-06A	BB00.40-P-0326-06A

 Engine cooling

Number	Designation			Engine 272.978 in model 639 with code H12
BF20.00-N-1001-01K	Coolant	Total filling capacity	Liter	13,6
		Corrosion/antifreeze down to -37 °C	Liter	6,8
		Corrosion/antifreeze down to -45 °C	Liter	7,5
		Sheet		BB00.40-P-0310-01A
		Sheet		BB00.40-P-0325-00A
		Sheet		BB00.40-P-0325-06A
		Sheet		BB00.40-P-0326-06A

 Mixture ratio for coolant

Number	Designation			Engine all (BUS, Heavy transporter, Light transporter, TRUCK, UNIMOG)
BF20.00-N-1001-04A	Mixture ratio for coolant	Antifreeze/water down to -37 °C	%	50/50
		Antifreeze/water down to -45 °C	%	55/45
		Sheet		BB00.40-P-0310-01A
		Sheet		BB00.40-P-0325-00A
		Sheet		BB00.40-P-0325-05A

S20.00-4504-01

S20.00-4503-01

N20.00-2038-01

Model 636, 639 with engine 646

3	Engine drain plug

MODEL 639

2	Drain plug for radiator

MODEL 639

1

Cap

Lowering

1	Place drain hose onto drain fitting at radiator.

2	Open radiator drain plug (2) and collect coolant in a suitable vessel.

3	Open engine drain plug (3) and collect coolant in a suitable vessel.

 The legal requirements or the local wastewater regulations must be observed for disposal of coolant.

 Engine 642.990, 651.940 in model 639
Engine 651.940 in model 636
These vehicles are not fitted with an engine drain screw (3).

Filling

4	Close radiator drain plug (2) and engine drain plug (3). ENGINE 646  ENGINE 272, 642, 646, 651  ENGINE 272 

5	Prepare coolant in the specified composition and pour in up to the maximum mark on the expansion reservoir . ENGINE 642, 646, 651  ENGINE 272  