Vacuum Pump Overhaul (Diesel Only)
Pump can be completely disassembled. See Fig 1 . Replace diaphragm retaining nut and all rubber parts. Use all parts included in repair kit. When reassembling, be sure diaphragm molded center faces up. Coat new retaining nut with sealing compound, and tighten to 60 INCH lbs. (7 N.m).