Electrical system

Removing and installing alternator, GTD

~2min read

Special tools and workshop equipment required

Torque wrench -V.A.G 1331-

Removing and installing alternator, GTD

Torque wrench -V.A.G 1783-

Removing

  • With ignition switched off, disconnect earth cable from battery -A- → Chapter.
  • Remove tensioner for poly V-belt → Rep. gr.13.
  • Remove front part of right wheel housing liner → Rep. gr.66.
  • Remove radiator cowl → Rep. gr.19.
  • Drain off coolant → Rep. gr.19.
  • Remove coolant hose from radiator → Rep. gr.19.

Vehicles with auxiliary heater

  • Remove auxiliary heater exhaust pipe → Rep. gr.82.

Vehicles with air conditioner

Caution Risk of damage to air conditioner compressor, refrigerant lines and refrigerant hoses: Make sure refrigerant lines and hoses are not excessively stretched, kinked or bent.
  • Remove air conditioner compressor from bracket → Heating, air conditioning system; Rep. gr.87.
  • Secure air conditioner compressor to lock carrier so that refrigerant lines are not under tension.

Continued for all vehicles

Removing and installing alternator, GTD
  • Remove bolts -1-.
Note If alternator -C--2- is stuck in its bracket, screw bolts in again except for the last 2 turns. Carefully hit bolt heads with flat side of hammer to release sliding bushes of alternator mounting.
  • Remove alternator -C--2- from bracket with electrical wiring still connected.
  • Disconnect electrical connector -3-.
  • Pry off cap -4-.
  • Unscrew nut and remove terminal 30/B+ -5-.
  • Unscrew nut -6- and pull off clamp -7-.
  • Remove alternator -C--2- downwards to the right.

Installing

Install in the reverse order of removal, observing the following:

  • To facilitate positioning of alternator -C-, slide bushes of alternator mounting slightly towards back.
Note Ensure that bushes of alternator mounting slide freely and are not to tight (loosen, if necessary); otherwise clamping force of sliding bushes is too low even if specified torque is applied.
  • Reconnect battery -A- → Chapter.
  • Always start engine and check belt running after completing work.

Specified torques

→ Chapter „Assembly overview - alternator“

Removing and installing alternator, GTD

Checking alternator

Checking alternator -C- → Vehicle diagnostic tester.

Test yourself

A quick Volkswagen Golf quiz: every answer comes with an explanation and a link to the manual page.