B4000 SE Regular Cab 4WD V6-4.0L OHV (1999)
12. Disconnect the brake booster vacuum hose and position aside.
13. Disconnect the manifold and tube from the receiver/ drier.
14. Disconnect the manifold and tube from the condenser core and remove the manifold and tube.
15. Install in the reverse order of removal.
1. Lubricate the O-ring seal with refrigerant oil.
2. Apply pipe sealant to the threads of the A/C manifold retaining bolt.