Reassembly goes twice as fast.....learning curve. I did not pressure-test the system. After 6,000 miles, no leaks.

I can't remember the figure, but I used torque specs for a 13mm bolt.

As mentioned above, it may be possible to do the job without removing the balancer, but it's not too difficult to remove, and surely makes the pump removal / replacement easier.

Don't forget to use a timing light to reset the ignition timing (appropriate for my '84 at least). Some later cars have more automated spark-timing systems.