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How to change water pump & timing belt kit on VW Golf IV Variant (1J5) – replacement guide

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Recommended replacement interval for the part category Water pump and timing belt kit : 70000 km

Important!

This replacement procedure can be used for:
VW Golf IV Variant (1J5) 1.4 16V … View more

The steps may slightly vary depending on the car design.

This video shows the replacement procedure of a similar car part on another vehicle

All the parts you need to replace – Water Pump + Timing Belt Kit for Golf IV Variant (1J5) and other VW models

Alternative products

Water pump and timing belt kit

Replacement: water pump + timing belt kit – VW GOLF IV Variant (1J5). List of the tools you'll need:

                      Wire brush
                    
                      WD-40 spray
                    
                      All-purpose cleaning spray
                    
                      Sealant
                    
                      Torque wrench
                    
                      Combination spanner #13
                    
                      Combination spanner #16
                    
                      HEX bit No.H6.
                    
                      Drive socket # 10 
                    
                      Drive socket # 15 
                    
                      Drive socket # 16 
                    
                      12-point socket #21
                    
                      Ratchet wrench
                    
                      Engine timing tool set
                    
                      Universal pulley holder
                    
                      Funnel
                    
                      Fluid container
                    
                      Crow bar
                    
                      Hydraulic transmission jack
                    
                      Microfibre towel
                    
                      Fender cover

Buy tools

Replacement: water pump + timing belt kit – VW GOLF IV Variant (1J5). AUTODOC experts recommend:

Follow the terms, recommendations and requirements of the part operation provided by the manufacturer.
Please note: all work on the car – VW GOLF IV Variant (1J5) – should be done with the engine switched off.

Carry out replacement in the following order:

Step 1

Open the bonnet.

Step 2

Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.

Step 3

Remove the protective cover.
Step 4

Unscrew the fasteners of the car battery terminals. Use a drive socket #10. Use a ratchet wrench.
Step 5

Remove the battery terminals.
Step 6

On the right side, detach the PCV valve hose from the engine cover.
Step 7

Remove the engine cover.

Replacement: water pump + timing belt kit – VW GOLF IV Variant (1J5). Tip:
Raise the engine cover, holding it on two sides simultaneously.Do not apply excessive force when removing the part. Otherwise you may damage it.
Step 8

Cover the throttle body with a microfibre towel to prevent dust and dirt from getting into the system.
Step 9

Undo the fasteners of the upper timing cover.
Step 10

Remove the upper timing cover.
Step 11

Unscrew the coolant reservoir cap.
Step 12

Lift the car using a jack or place it over an inspection pit.

Step 13

Prepare a container for fluids.
Step 14

Open the coolant drain tap.
Step 15

Drain the coolant from the engine.

AUTODOC recommends:
Caution! The coolant can be very hot.Wear gloves to prevent contact with hot liquid.All work should be done with the engine stopped.
Step 16

Pull aside the V-ribbed belt tensioner pulley. Use a combination spanner #16.
Step 17

Remove the V-ribbed belt.
Step 18

Return the tensioner pulley to its initial position.
Step 19

Unscrew the fastener of the serpentine belt tensioner pulley. Use a combination spanner #16.
Step 20

Remove the serpentine belt tensioner pulley.
Step 21

Unscrew the crankshaft pulley fastener. Use 12-point socket No.21. Use a ratchet wrench.
Step 22

Remove the crankshaft pulley.
Step 23

Screw in the crankshaft pulley fastener. Use 12-point socket No.21. Use a ratchet wrench.
Step 24

Unscrew the fasteners of the lower timing cover. Use a drive socket #10. Use a ratchet wrench.
Step 25

Open the clips of the lower timing cover. Use a crowbar.
Step 26

Remove the lower timing cover.
Step 27

Turn the crankshaft gear. Use 12-point socket No.21. Use a ratchet wrench.

Please note!
The piston should be at its top dead centre (TDC).
Step 28

Install the camshaft gear locking tool according to the factory marks. Use an engine timing tool set.
Step 29

Support the engine in the oil pan area. Use a hydraulic transmission jack.
Step 30

Clean the engine mount fasteners. Use a wire brush. Use WD-40 spray.
Step 31

Detach the coolant pipe bracket.
Step 32

Unscrew the upper fastener of the engine mount. Use a combination spanner #16. Use a drive socket #16. Use a ratchet wrench.
Step 33

Remove the fastening bolts.
Step 34

Clean the engine mount fasteners. Use a wire brush. Use WD-40 spray.
Step 35

Unscrew the engine mount fasteners. Use a drive socket #16. Use a ratchet wrench.
Step 36

Remove the fastening bolts.
Step 37

Remove the engine mount.
Step 38

Make a mark on the crankshaft gear.
Step 39

Make a mark on the camshaft gear.
Step 40

Make a mark on the timing belt.
Step 41

Loosen the fastener of the timing belt tensioner pulley. Use a combination spanner #13. Use HEX No.H6.
Step 42

Remove the timing belt tensioner pulley.
Step 43

Remove the timing belt.
Step 44

Clean the fastener of the timing belt idler pulley. Use a wire brush. Use WD-40 spray.
Step 45

Unscrew the fastener of the timing belt idler pulley. Use a drive socket #15. Use a ratchet wrench.
Step 46

Remove the timing belt idler pulley from its mounting seat.
Step 47

Unscrew the timing belt idler pulley bracket with integrated pulley. Use a drive socket #16. Use a ratchet wrench.
Step 48

Remove the timing belt idler pulley bracket with integrated pulley.
Step 49

Make a mark on the camshaft gear. Make a mark on the timing belt.
Step 50

Remove the timing belt tensioner pulley. Use a drive socket #16. Use a ratchet wrench.
Step 51

Remove the timing belt.
Step 52

Unscrew the fasteners of the side timing cover. Use a drive socket #10. Use HEX No.H6. Use a ratchet wrench.
Step 53

Remove the side timing cover.
Step 54

Unscrew the water pump fasteners. Use HEX No.H6. Use a ratchet wrench.
Step 55

Remove the water pump.

Replacement: water pump + timing belt kit – VW GOLF IV Variant (1J5). Tip from AUTODOC:
Caution! Coolant may come out from the water pump channels and body.
Step 56

Clean the water pump mounting seat. Use all-purpose cleaning spray.
Step 57

Treat the water pump mounting seat. Use a sealant.
Step 58

Install the water pump gasket.
Step 59

Install the new water pump.
Step 60

Install the side timing cover.
Step 61

Screw in the water pump fasteners. Use HEX No.H6. Use a ratchet wrench.
Step 62

Tighten the water pump fasteners. Use HEX No.H6. Use a torque wrench. Tighten it to 20 Nm torque.
Step 63

Screw in the fasteners of the side timing cover. Use a drive socket #10. Use a ratchet wrench.
Step 64

Install the new timing belt according to the factory marks.

Replacement: water pump + timing belt kit – VW GOLF IV Variant (1J5). AUTODOC experts recommend:
Be careful not to damage the timing belt.
Step 65

Treat the fastening bolt. Use a sealant.
Step 66

Install the timing belt tensioner pulley. Use a drive socket #16. Use a ratchet wrench.
Step 67

Treat the fastening bolt. Use a sealant.
Step 68

Install the timing belt idler pulley.
Step 69

Tighten the fastener of the timing belt idler pulley. Use a drive socket #15. Use a torque wrench. Tighten it to 25 Nm torque.
Step 70

Treat the fastening bolt. Use a sealant.
Step 71

Install the timing belt idler pulley bracket with integrated pulley.
Step 72

Tighten the timing belt idler pulley bracket with integrated pulley. Use a drive socket #16. Use a torque wrench. Tighten it to 50 Nm torque.
Step 73

Adjust the timing belt tension by moving the tensioner pulley. Use a combination spanner #16. Use HEX No.H6.

AUTODOC recommends:
Make sure that the timing belt is properly tensioned.
Step 74

Tighten the fastener of the timing belt tensioner pulley. Use a combination spanner #16. Use a torque wrench. Tighten it to 20 Nm torque.
Step 75

Install the new timing belt according to the factory marks.

Replacement: water pump + timing belt kit – VW GOLF IV Variant (1J5). AUTODOC recommends:
Be careful not to damage the timing belt.Install the timing belt tensioner pulley.
Step 76

Adjust the timing belt tension by moving the tensioner pulley. Use a drive socket #15. Use HEX No.H6. Use a ratchet wrench.

AUTODOC recommends:
Make sure that the timing belt is properly tensioned.
Step 77

Tighten the fastener of the timing belt tensioner pulley. Use a drive socket #15. Use HEX No.H6. Use a torque wrench. Tighten it to 20 Nm torque.
Step 78

Remove the camshaft gear locking tool.
Step 79

Turn the crankshaft pulley. Use 12-point socket No.21. Use a ratchet wrench.

Replacement: water pump + timing belt kit – VW GOLF IV Variant (1J5). Tip:
Make sure all the timing belt components are mounted correctly.
Step 80

Treat the engine mount fasteners. Use a sealant.
Step 81

Install the engine mount to its mounting seat.
Step 82

Install the fastening bolts.
Step 83

Tighten the engine mount fastening bolts. Use a drive socket #16. Use a torque wrench. Tighten it to 50 Nm torque.
Step 84

Treat the fastening bolts. Use a sealant.
Step 85

Install the fastening bolts.
Step 86

Screw in the upper fasteners of the engine mount. Use a drive socket #16. Use a ratchet wrench.
Step 87

Tighten the upper fastener of the engine mount. Use a drive socket #16. Use a torque wrench. Tighten it to 50 Nm torque.
Step 88

Remove the support from under the engine.

AUTODOC recommends:
Replacement: water pump + timing belt kit – VW GOLF IV Variant (1J5). Lower the transmission jack smoothly, without jerks, to avoid damaging components and mechanisms.
Step 89

Install the lower timing cover. Make sure you hear a click indicating that it is locked in place.
Step 90

Tighten the fasteners of the lower timing cover. Use a drive socket #10. Use a torque wrench. Tighten it to 8 Nm torque.
Step 91

Unscrew the crankshaft pulley fastener. Use 12-point socket No.21. Use a ratchet wrench.
Step 92

Install the crankshaft pulley according to the factory marks.
Step 93

Treat the fastening bolt. Use a sealant.
Step 94

Install the serpentine belt tensioner pulley.
Step 95

Screw in the fastener of the serpentine belt tensioner pulley. Use a combination spanner #16.
Step 96

Pull aside the V-ribbed belt tensioner pulley. Use a combination spanner #16.
Step 97

Install the V-ribbed belt.

Replacement: water pump + timing belt kit – VW GOLF IV Variant (1J5). Tip from AUTODOC experts:
Make sure that the V-ribbed belt fits all pulleys snugly.
Step 98

Install the crankshaft pulley locking tool. Use a universal pulley holder.
Step 99

Tighten the crankshaft pulley fastener. Use 12-point socket No.21. Use a torque wrench. Tighten it to 90 Nm torque.+90°

AUTODOC recommends:
Important! Be sure to use new fasteners.
Step 100

Remove the crankshaft pulley locking tool.
Step 101

Return the tensioner pulley to its initial position. Use a combination spanner #16.
Step 102

Lower the car.

Step 103

Close the coolant drain tap.
Step 104

Install the upper timing cover. Make sure you hear a click indicating that it is locked in place.
Step 105

Attach the coolant pipe bracket.
Step 106

Remove the microfibre towel from the throttle body.
Step 107

Install the engine cover and secure it. Make sure you hear a click indicating that it is locked in place.

Replacement: water pump + timing belt kit – VW GOLF IV Variant (1J5). Professionals recommend:
Do not apply excessive force when installing the part. Otherwise you may damage the fasteners.Make sure the engine cover is properly seated. It should not be displaced with respect to the guiding fasteners and the throttle body air intake hose.
Step 108

On the right side, attach the PCV valve hose to the engine cover.
Step 109

Remove the coolant reservoir cap.
Step 110

Insert the funnel.
Step 111

Pour coolant in the coolant reservoir.

AUTODOC recommends:
Only use the coolant recommended by the manufacturer.The coolant level should be at the MAX mark.Wait until the air goes out of the system.
Step 112

Install the coolant reservoir cap.
Step 113

Screw on the coolant reservoir cap.
Step 114

Attach the terminals to the battery.

Replacement: water pump + timing belt kit – VW GOLF IV Variant (1J5). AUTODOC recommends:
Be careful! Do not mix up the positive and the negative terminals of the car battery.
Step 115

Screw in the fasteners of the battery terminals. Use a drive socket #10. Use a ratchet wrench.
Step 116

Install the protective cover.
Step 117

Run the engine for a few minutes. This should be done in order to remove residual air from the cooling system and to check if the components are operating correctly.

Step 118

Shut off the engine.

Step 119

Check the coolant level. If necessary, top up to the required level.

Please note!
The coolant level should be at the MAX mark.
Step 120

Remove the fender protection cover.

Step 121

Close the hood.

Replacement: water pump + timing belt kit – VW GOLF IV Variant (1J5). Tip from AUTODOC:
Be sure to record the mileage at which you replaced the timing belt and water pump kits.

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