Compressor HVAC: Service and Repair: Overview

2003 Volkswagen Passat Sedan 4Motion (3B3) W8-4.0L (BDP)SECTION Overview


Special Tools, Testers, Measuring Instruments And Auxiliary Items Required

8-cylinder Engine

- Torque wrench (5 - 50 Nm)
- Kent-Moore ACR4 (or equivalent)
- VAS 5532 Socket set

NOTE:
- The compressor bracket and related components must only be removed and installed after discharging refrigerant circuit. Use Kent-Moore ACR4 or equivalent.
- Before carrying out any work on the A/C refrigerant system, refer to all CAUTIONS and WARNINGS in A/C refrigerant system safety measures.
- The cylinder block on 8-cylinder engines is made from aluminium.
- Removing ribbed belt.







1 Screw
- M8x25
- 23 Nm (17 ft.lb.)
- Qty. 4
2 Compressor bracket
- A/C compressor, removing and installing
- Remove hydraulic engine mount from engine block.
- Remove bolts from A/C compressor bracket.
- When installing bracket, ensure proper fit of spacer sleeves - 3 -.
3 Spacer sleeves
- Ensure proper fit in bracket
4 Oil pan
5 Engine mount support
6 Hex head bolt
- M10x40
- 50 Nm (37 ft. lb.)
- Qty. 4
7 Hex socket bolt
- M8x48
- 23 Nm (17 ft.lb.)
- Qty. 2
8 Power steering pump bracket
9 Hex socket bolt
- M10x30
- 32 Nm (24 ft.lb.)
- Qty. 4
10 Power steering pump
11 Ribbed belt
- Routing, See Fig. 1
12 Hex socket bolt
- M8x34
- 23 Nm (17 ft.lb.)
- Qty. 3
13 Hex socket bolt
- M8x95
- 23 Nm (17 ft.lb.)
- Qty. 3
14 Compressor
- Denso
- Without A/C clutch.

Fig. 1 Ribbed belt, routing







NOTE: When installing belt ensure it is correctly seated in pulley.
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.