Removing and installing belt pulley: VW 1.4 (CAXA, CMSB, CTHD, CTKA)

🧭 Before you start

Fits: platform codes 5M1, 521

• Special tools named: torque wrench

Don't miss

• Carefully remove cap with circlip (A) using, for example, a small screwdriver or long nose pliers. Exercise particular caution to ensure poly V-belt pulley is not damaged in the process.
• Counterhold drive plate (C) and poly-V-belt pulley (D) using commercially available strap wrench in (direction of arrow E) and loosen driveshaft (B) (35 ± 5 Nm) in (direction of arrow F).
• When installing circlip (A), ensure that it is not expanded more than necessary.
• Counterhold drive plate (1) using commercially available strap spanner in (direction of arrow A) and tighten drive shaft by turning torque wrench in (direction of arrow B) (35 ± 5 Nm).

🔧 Engine codes this applies to

🔩 Torque settings

Values can differ between engine variants — check the code stamped on your block.

ℹ️ Always cross-check the exact figure against your vehicle's factory manual before final tightening — a wrong torque can damage the engine. These values are extracted from workshop data and may not cover every variant or revision.

📋 Procedure

1. Remove poly V-belt 13Crankshaft, pistons.
2. Carefully remove cap with circlip (A) using, for example, a small screwdriver or long nose pliers. Exercise particular caution to ensure poly V-belt pulley is not damaged in the process.
3. Counterhold drive plate (C) and poly-V-belt pulley (D) using commercially available strap wrench in (direction of arrow E) and loosen driveshaft (B) (35 ± 5 Nm) in (direction of arrow F). — 5 Nm (3.7 lb-ft)
4. Remove drive plate (C).
5. Remove circlip (A).

6. Pull off poly V-belt pulley (B).
7. Renew circlip (A).
8. Clean air conditioner compressor flange before fitting poly V-belt pulley
9. When installing circlip (A), ensure that it is not expanded more than necessary.
10. Install poly V-belt pulley (B).
11. Install circlip (A) correctly: chamfer (C) faces away from air conditioner compressor (flat side towards air conditioner compressor).
12. Insert rubber elements (D) into poly V-belt pulley (B), as shown in figure. [Note: When installing drive plate, lightly moisten rubber elements (D) e.g. with tyre mounting paste or soap solution (as a lubricant)To prevent any damage to the air conditioner compressor mounting, use jaw protectors (2) between the vice and air conditioner compressor.]
13. Insert drive plate (C) between rubber elements so far that plate contacts drive shaft of air conditioner compressor (B).
14. Counterhold drive plate (1) using commercially available strap spanner in (direction of arrow A) and tighten drive shaft by turning torque wrench in (direction of arrow B) (35 ± 5 Nm). — 5 Nm (3.7 lb-ft)
15. Fit cap with circlip.

Other VW procedures

• Removing and installing fuel line for auxiliary/supplementary heater
• Removing and installing fuel delivery unit/fuel gauge sender - vehicles with front-wheel drive
• Checking holding pressure, vehicles with fuel filter integrated into flange of fuel delivery unit
• Removing and installing engine control unit J623 (Golf ► 2008, Eos) · 1 torque figures
• Removing and installing coolant pipe (rear) with thermostat housing
• Removing engine · 41 torque figures
• Removing and installing camshaft – VW Golf Cabriolet · 47 torque figures
• Adjusting valve timing – VW Passat B5 · 83 torque figures
• Removing and installing camshafts – VW Passat B6 · 39 torque figures
• Removing and installing coolant pump · 53 torque figures