While you wait for answers, we may have found some information which could help you.
Click here for Just Wat Checkshut off valve location?
Bosch GBH 2-24 DSR 0611 228 742?
Bosch PSB 24 VE-2 Cordless Hammer Drill, help needed?
why is my Bosch GSB VE2LI drill getting slower (its not the battery)?
how to bypass switch Bosch 1021 VSR?
repair bosch electric drill?