4 bolts through the housing. Originally 6mm hex heads. I use a 1/4 drive 6mm flex socket from snap-on mated to a 3" 1/4 extension, 1/4 to 3/8 adaptor and a 10" 3/8 extension. I bust sockets every other time I do this so.... I have 2. If the bolts have been swapped (I replace them) I use a snap on 13mm 12 pt flex extended socket, 10". The front 2 (by the belt shock) can be removed with a stubby 1/4 6mm hex. If you have already purchased the new pump you can see the bolt circle on the new one.
Some sadist came up with the bottem rear bolt on this engine.
Project Smoker, '87 603 powered wagon
Hauler, 96 CTD can you say torque?
Toy 73 Cougar xr7 convertible
Acme Automotive Inc.