Cooling System Components (on Engine)

Cooling system components (on engine)





1- Toothed belt
^ Mark direction of travel before removing
^ Check for wear
^ Do not bend
^ Removing, installing and tensioning, Refer to Drive Belts, Mounts, Brackets and Accessories.
2- O-ring
^ Always replace
3- Connector
^ 4-pin
4- Engine Coolant Temperature (ECT) sensor -G62
^ For Engine Control Module (ECM)
^ If necessary, release pressure in cooling system before removing
^ Checking: Refer to Powertrain Management.
5- O-ring
^ Replace if damaged
6 - 10 Nm
7- To - turbocharger
8- 15 Nm
9- To top of radiator
^ Connection diagram for coolant hoses, Refer to Radiator Hose.
10- Retaining clip
^ Check for secure fitting
11- Connecting - piece
12- To heater core
^ Connection diagram for coolant hoses
13- Upper coolant line
^ Secured at cylinder head
^ Connection diagram for coolant hoses
14- Coolant hose
^ Connection diagram for coolant hoses
15- Coolant hose
^ Connection diagram for coolant hoses
16- Oil cooler
^ Removing and installing, Refer to Engine lubrication; Service and Repair; Part II, item 22
17- From heater core
^ Connection diagram for coolant hoses
18- 20 Nm
19- Lower coolant pipe
^ Secured at oil filter bracket
^ Connection diagram for coolant hoses
20- Sealing plug
^ Check for secure fitting
21- Cap
^ Check using VAG 1274 cooling system tester with VAG 1274/9 adapter
^ Test pressure: 1.4 to 1.6 bar
22- Expansion tank
^ Perform cooling system leakage test using VAG 1274 cooling system tester with VAG 1274/8 adapter
23- Lower coolant hose
^ From bottom of radiator
^ Connection diagram for coolant hoses
^ secured with retaining clip at radiator and connecting piece
^ Check for secure fitting
24- Connecting - piece
25- Coolant thermostat
^ Installation position: Bracket must be vertical
^ Checking: Warm thermostat in hot water bath.
^ Starts opening at approximately 86°C
^ Opens at least 7 mm
26- Coolant pump
^ Check for ease of movement Completely replace if damaged or leaking
^ Removing and installing
27- Bracket
^ for tensioner, VISCOUS fan clutch, generator and power steering vane pump
^ Removing and installing
28- Blower wheel