1998 jeep wrangler belt diagram - 1998 Jeep Cherokee

SOURCE: VACUUM HOSE DIAGRAM FOR 1988 JEEP WRANGLER 4.2 I6?

here is a link with all the vacum diagrams for your jeep. hope it helps.
http://www.autozone.com/addVehicleId,1076002/initialAction,repairGuide/shopping/repairGuide.htm?pageId=0900c1528008ab9d

SOURCE: diagram for 1998 Jeep right hand drive serpentine belt

http://www.fixya.com/cars/t2857543-need_diagram_serpentine_belt_replacement here is a link that should help u

SOURCE: SERPENTINE BELT DAGRAM FOR A 1997 JEEP WRANGLER

Here are two links for the engines offered that year...

4 cyl 2.5L
http://www.gates.com/common/part_locator/view_diagram.cfm?id=S7003

6cyl 4.0L
http://www.gates.com/common/part_locator/view_diagram.cfm?id=S7024

SOURCE: Need routing diagram for serpentine belt - '98

Click of the following direct, Free Link. It has several Serpentine Diagrams, including the one for your 1998 Jeep Wrangler 4.0L In-Line 6-Cylinders based upon your Engine Options (AC/No AC, Power Steering/No Power Steering, etc.).
The Link Page ALSO has the 2.5L In-Line 4-Cylinder Serpentine Belt Diagrams with their various engine options.
Included are the with AC / without AC Routing.

Let me know if this helped, or if you have additional information or questions. Feel Free to contact me at FixYa.com!
http://www.2carpros.com/car_repair_information/year/1998/make/jeep/model/wrangler/1998_jeep_wrangler_drive_belt_routing_diagram.htm

SOURCE: how do i replace serpentine belt on 1997 jeep wrangler

Adjustment is made by loosening the power steering pump. There is a transverse long bolt (jack bolt) right under the pump that is used for adjustment.