I would just bite the bullet and remove the pump to do the job unless your mate has a hoist you can put it up on might make it easier, you will probably find the bolts and the solenoid difficult to remove whilst in situ, I ended up bruised and battered trying to get to mine, sore back, sore arms, sore shoulders from lying on the concrete driveway with nothing but a towel between me. Also check the vid I posted earlier on doing timing after I replaced solenoid it was quiet but was still throwing errors. just my 2bob
Cheers
Chris.