Brake servo

Another friend, who was working on the air conditioning noticed an air leak on the input side of the brake servo. It was only noticeable with  the  heater fans turned off and the windows closed and door shut. The noise would go away the minute the brake pedal was depressed. This would not help our emissions (occasional EMS light coming on - long term mixture weak)  so we decided to replace the unit.

The Volvo forums warn that the front sub frame has to be dropped by 100mm. I decided to look in all places in the Haynes workshop manual for guidance. To my great delight this job is in fact covered in the manual.

Here are some images of the job.

Before showing limited access

10mm threaded rod inserted to drop the front sub frame

After dropping subframe

The biggest issue was undoing the knuckle joint in the steering column and reinserting it at the end.