CV boot replacement [AUTODOC TUTORIAL]

How to change CV boot on a car – replacement tutorial

Required Tools:

                        Tap wrench
                      
                        Wheel impact socket
                      
                        Impact socket
                      
                        Circlip pliers
                      
                        Jack
                      
                        Line stoppers

Buy tools

Please note!

CV joints are fitted on each side of the axle shaft
The location of the components depends on the drive type: front, rear, or all-wheel drive
CV joints are subject to considerable stress and operate in places that are not protected against dirt and moisture
That is why they always need to be permanently lubricated and protected from adverse environmental factors
For this purpose, the joint is sealed tight with a dust boot
Its quality and condition directly affect the service life of the CV joint

1.

To dismount the outer CV boot, simply remove the CV joint from the wheel hub. When replacing the inner dust boot, it may be necessary to remove the complete CV axle
2.

The outer CV joint is usually secured to the hub with a bolt or nut. You need to unstake the fastener or remove the cotter pin from it and unscrew it

Important!
To prevent the wheel from spinning and follow safety requirements, it is best to loosen the fastener while all wheels of the car are on the ground
3.

If the CV axle shaft cannot be removed, make sure that there is enough clearance to get the CV joint out of the hub
4.

Use a punch and hammer to knock the joint out

AUTODOC recommends:
Only apply the punch to the centre hole of the CV joint so as not to damage the splines
5.

Remove the ball joint or detach the steering knuckle from the suspension strut
6.

Remove the dust boot clamps
7.

Detach the CV joint from the axle shaft

AUTODOC experts recommend:
To remove a CV joint of this type, use its own fastening bolt
8.

Replace the circlip, inspect the axle shaft splines for wear
9.

Remove the boot and clean the old grease off the CV joint
10.

Secure the CV joint in a vice

Be careful!
To avoid damaging the splines, secure the part by its housing. You could also use wooden vice jaw liners
11.

Remove the boot from the CV joint by prying it off with a suitable tool. Proceed carefully as there is a large amount of grease inside

Please note!
Stains of lubricant on the boot where it contacts the CV joint indicate loss of tightnessThis can be caused by corrosion on the joint’s housing where the boot is attached to it
12.

Remove the thrust washer, the plastic bushing that limits the articulation angle, and the fastening bolt
13.

Rotate the inner part of the CV joint in different directions as far as possible and remove all the balls one by one

AUTODOC recommends:
To reassemble the unit correctly, remember the way the inner race should face
14.

Rotate the cage 90° and remove it
15.

For this part, you should also note which side faces the assembly
16.

Assess the amount of wear of the CV joint housing grooves
17.

Thoroughly clean all parts of the joint
18.

Check that the CV joint components are in good condition
19.

Inspect them for scoring, deformation, and other damage
20.

Make sure that there are no signs of wear on the cage windows
21.

Inspect the inner race
22.

Use special grease for CV joints

Important!
Please note that the grease for the outer and inner CV joints is different.Do not mix greases of different types
23.

After cleaning the components, reassemble the CV joint and pack it with grease
24.

Prevent grease from getting on the outside of the CV joint housing so that the boot can be fitted securely
25.

Degrease the CV boot’s mounting seat and slide it onto the axle shaft
26.

Tighten the clamp and turn the boot inside out to prevent it from getting dirty
27.

Install the thrust washer and plastic bushing
28.

Fit a new circlip
29.

Align the splines of the CV joint with those on the axle shaft
30.

Push the CV joint to overcome the resistance of the circlip and click the joint into place

Be careful!
To avoid damaging the splines, force must be applied to the housing via a sleeve or driver of a suitable diameter
31.

Align the joint so that it is positioned at a right angle to the axle shaft
32.

Degrease the surface of the CV joint housing and put the boot on carefully
33.

Make sure that the clamps are installed correctly and that the boot is fitted in its mounting seat
34.

Removing this type of CV joint may require a special tool
35.

Use a puller and the axle nut to remove the CV joint from the axle shaft
36.

Clean all the components and check their condition
37.

Remember the position of the inner race and where the circlip is located
38.

Apply most of the grease to the inside of the CV joint while working the joint by hand at the same time
39.

Slide the boot farther away from its mounting seat on the axle shaft so that it does not get in the way while you are working.
40.

Apply the remaining grease on the top of the assembly and make sure it does not get on the dust boot’s mounting seat

Important!
When you steer the wheels, all the grease will spread evenly throughout the mechanism and inside the CV boot
41.

Carefully put the boot on
42.

Make sure that the boot does not turn and fits snugly around the CV joint housing
43.

Install the clamps and make sure they are positioned correctly, without misalignment

Be careful!
Avoid overtightening them, as this could damage the dust boot
44.

Use a special tool to tighten the clamps
45.

Alternatively, you can use side or end cutting pliers to tighten the clamp and then use a hammer to tap the spot where it was tightened
46.

To replace the inner CV boot, remove the larger clamp
47.

Remove the axle shaft together with the tripod from the inner CV joint housing
48.

Remove the circlip at the front of the CV joint

AUTODOC recommends:
If the tripod cannot be removed from the axle shaft, use a puller
49.

Clean all the components of the joint as well as its mounting seat on the axle shaft
50.

Put a new boot on the axle shaft
51.

Press-fit the tripod
52.

Adjust the position of the boot so that the recesses inside it align with the joint’s rollers
53.

Pack the CV joint housing with the required amount of grease
54.

Install the CV axle together with the joint and work the joint by hand to distribute the grease evenly
55.

Tighten the boot clamps
56.

Reinstall all the suspension components you removed
57.

Tighten the fasteners to the manufacturer’s recommended torque
58.

Use a torque wrench to tighten the axle fastener.

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