VW Golf manuals

Volkswagen Golf Service & Repair Manual: Removing and installing coolant pump

Removing and installing coolant pump

Special tools and workshop equipment required
Refractometer -T10007 A-
Drip tray for workshop hoist -VAS 6208-
Hose clip pliers -VAS 6340-
Cooling system charge unit -VAS 6096-
Adapter for cooling system tester -V.A.G 1274/8-
Torque wrench -VAS 6583-

 
 
   
Torque wrench -V.A.G 1410-
Release tool -T10527-
Release tool -T10527/1-
Removing
–  Drain coolant → Chapter.
–  Remove battery tray → Electrical system; Rep. gr.27.
 

Removing and installing coolant pump

–  Loosen hose clips -1, 2- and remove air pipe.
–  Move air hoses clear at air pipe.
–  Detach connector from charge pressure sender -GX26-.
 

Removing and installing coolant pump

–  Release fasteners -arrows- using release tools -T10527- and -T10527/1-.
–  Remove air pipe -1-.
 

Removing and installing coolant pump

–  Press release tabs and disconnect hose -1- for activated charcoal filter.
–  Remove bolts -arrows- and detach crankcase breather hose.
 

Removing and installing coolant pump

–  Lay wiring harness to one side -arrows-.
–  Unscrew bolts -1, 3- and remove cover -2- for toothed belt for coolant pump.
 

Removing and installing coolant pump

–  Move clear electrical wiring harness -1- and coolant hose -2-.
–  Release hose clips -arrows-, and disconnect all coolant hoses from coolant pump.
 

Removing and installing coolant pump

–  Loosen and unscrew bolts in the sequence -5 … 1-.
–  Detach coolant pump with toothed belt.
–  Remove thermostat housing if coolant pump is being renewed → Chapter.
Installing
  Note
Renew gasket for housing -arrows-.
Renew the toothed belt of the coolant pump.
Secure hose connections with hose clips meeting production standard → Electronic Parts Catalogue.
 

Removing and installing coolant pump

–  Ensure proper seating of gaskets -arrows-.
–  Lubricate seal for coolant pump lightly with coolant.
  Note
Always adhere to the sequence of work steps given below when installing the coolant pump.
This ensures that the toothed belt is correctly tensioned.
The following work steps must be carried out with the aid of a 2nd mechanic.
–  Set No. 1 cylinder to TDC → Chapter.
–  Fit toothed belt so that it is centred and move coolant pump into installation position.
–  Mount coolant pump on cylinder head with securing bolts.
 

Removing and installing coolant pump

–  Pre-tighten bolts in the specified sequence:
 

Removing and installing coolant pump

Stage Bolts Specified torque
1 -1 … 5- Screw in to contact by hand
2 -1 … 5- 10 Nm
 
–  Loosen all bolts again by one turn.
   
–  Apply torque wrench -VAS 6583- with hexagon key (10 mm) -item 6- to coolant pump.
  Note
For ease of handling, apply torque wrench -VAS 6583- vertically.
–  Have a second mechanic apply a torque of 30 Nm to coolant pump.
  Note
Do not support torque wrench with your other hand.
Do not apply »excessive force« to torque wrench.
–  While keeping coolant pump under tension, tighten bolts for coolant pump in specified sequence:
 

Removing and installing coolant pump

Stage Bolts Specified torque
3 -2, 1, 5- 10 Nm
4 -3, 4, 5, 1, 2- 12 Nm
 
Further installation steps are carried out in the reverse order; note the following:
Coolant hose schematic diagram → Chapter.
–  Replenish coolant → Anchor.
Specified torques
Tightening sequence for coolant pump → Anchor
→ Chapter „Assembly overview - coolant pump, thermostat“
→ Chapter „Assembly overview - turbocharger“
→ Chapter „Assembly overview - charge air system“
→ Electrical system; Rep. gr.27
   
Assembly overview - coolant temperature sender
1 -  O-ring Renew 2 -  Radiator outlet coolant temperature sender -G83- Removing and installing → C ...

Removing and installing toothed belt pulley for coolant pump, engine codes CHPA, CMBA, CPVA, CXSA, CZDA, CZCA, CPVB
Special tools and workshop equipment required     Counterhold -T10172- with adapter -T10172/2- ...

Other materials:

Overview of fitting locations – lights in centre console
  Note The illustration shows fitting locations for LHD vehicles. Fitting locations for RHD vehicles are similar. 1 -  Selector lever position display -Y26- Removing and installing → Chapter Overview of ...

Warning lamp
First read and observe the introductory information and safety warnings  Display Possible cause Solution Bonnet not closed properly Do not drive on! Close bonnet. Several warning and indicator lamps will light up ...

Removing and installing aerial amplifier for mobile telephone -R86-
Removing –  Switch off ignition and all electrical consumers, and remove ignition key. –  Remove luggage compartment side trim panel (right-side) just enough so that the aerial amplifier for mob ...

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