I have been trying to find information regarding the recommended interval for replacement of a 1999 Jeep Cherokee Sport 6cyl 4wd serpentine belt. It has been 4 years since last replacement. The belt shows signs of cracking on the tooth side, but I'm not experienced enough to know if this is an indicator of need for replacement or if this is usual. Please help.
If it's cracked, replace it. If it would break on you while driving, it wouldn't be a nice sound. It's not that hard to do either. You should replace it with a goodyear gatorback belt. I think they are the best belt out there for the money.
Put a Gatorback in about 3 weeks ago while we had the radiator out. I've been told that small cracks in the ribbed side are OK within certain limitation, but changed it anyway. It was pretty easy, though we had lots of room to work w/the rad and housing out.
'94 Cherokee Country Engine: 4.0 HO, Sealed canister filter, 3 core CSF steel radiator, CatCo cat, Dynomax Turbo Flow muffler. Electronics: Remote start/locks, Pioneer DEH-P7800MP w/XM, Polk Audio speakers, Garmin Nuvi 660 GPS, Cobra 148 GTL P&T w/Wilson 1000. Suspension: Old Man Emu 3" lift+OME AAL, JKS adjustable trackbar, QDs, LCAs UCAs, A.C.O.S., DPG Offroad adjustable bumpstop plate, Daystar poly bumpstops. Steering: Currie HD steering, C-ROK steering box reinforcement, OME stabilizer. Armor/Recovery: T&T Custom belly skid, Mopar gas tank skid, JKS LCA mini skids, Rock Lizard Super Skink Sliders, Mopar 2" receiver, ARB Bull Bar/Ramsey REP 8.5 winch. Drive train: D30 front axle w/Superior Chromo D30 axles & outter seals, D/S 4.56 R&P, ARB locker, Ruff Stuff cover. Ford 8.8 rear axle w/Superior Super 88 kit, Ford Motor Sports 4.56 R&P, ARB locker, SOLID cover, Russell stainless lines. Front and rear Tom Woods HD drive shafts, 242 x-fer case w/Tom Woods SYE. Tires/Wheels: 33x10.5x15 BFG Mud Terrains on Alcoas. Misc: Garvin Wilderness rack, Safari Snorkel, Redline Tuning hood lifts. Awaiting installation: Autometer A pillar gauge pod, oil, water, & tranny temp guages, PIAA driving lights, Goferit tie-rod flip bushing, '95 Brake booster and M/C, M.O.R.E. Motor mounts, TnT Custom 1.5" Shackle. Stroker Project: HO Block, '99 intake manifold, bored TB, 1" TB spacer, Dynomax Blackjack Header, Permacool electric fan.