While you wait for answers, we may have found some information which could help you.
Click here for Bosch 24 BatteryWich other on off switch fits my Bosch GbH4 110v?
shut off valve location?
How can I fix a BOSCH AL2450 DV charger?
How can I open my Bosch 18V 2.6Ah Ni-MH Battery? ?
repair bosch electric drill?
Bosch PSB 24 VE-2 Cordless Hammer Drill, help needed?