Bosch Hydromax brake booster info - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**CarolinaHD** · 06-09-2020, 07:55 AM

BigDually and Richard's truck utilize the Delco Hypower system which is the predecessor to the Bosch Hydromax. There were 2 different style motors and I have seen both styles on the Hypower and Hydromax systems. I think it all depends on the specific vehicle it was going in.

1 style has just the positive wire going to it and is grounded through the body to the chassis and the other has 2 wires, positive and ground.

They both have the same mounting holes, same inlet and outlet holes and same o ring seals. So in theory they should swap back and forth.

Somebody should buy that replacement pump and report back to us

06-09-2020, 07:55 AM	#19
CarolinaHD Moderator Join Date: Aug 2017 Location: Cabarrus Posts: 426	Re: Bosch Hydromax brake booster info BigDually and Richard's truck utilize the Delco Hypower system which is the predecessor to the Bosch Hydromax. There were 2 different style motors and I have seen both styles on the Hypower and Hydromax systems. I think it all depends on the specific vehicle it was going in. 1 style has just the positive wire going to it and is grounded through the body to the chassis and the other has 2 wires, positive and ground. They both have the same mounting holes, same inlet and outlet holes and same o ring seals. So in theory they should swap back and forth. Somebody should buy that replacement pump and report back to us __________________ Alex 1967 C50 292ci Lumber truck 1967 C50 292ci Dump truck 1967 C60 366ci Fire truck Last edited by CarolinaHD; 06-09-2020 at 08:11 AM.



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