Doing it without damaging the wire boot and resistor is easy with the right tool
Diesel Engine Repair
You will need a bench mount pressure release tester to do this yourself.
Sometimes it can be near impossible to get the bolts out and the parts separated
Usually means something is broken or loose in the engine compartment
Do your homework and proceed carefully BEFORE buying! Type of Problem: troubleshooting
Thoroughly check the car and especially the engine before spending big $$$
An old hose can be very difficult to remove due to age and corrossion
How to determine if the engine noise is external or internal
As used by Kent Bergsma in all his latest videos - these are the best!
This is one cool kit...