Finding the correct serpentine belt routing for your 1998 Jeep Cherokee 4.0L is crucial to ensure proper accessory function and avoid damage from incorrect installation. This engine uses a single serpentine belt to drive the alternator, power steering pump, AC compressor, and water pump, with a tensioner pulley for adjustment.
Correct Serpentine Belt Routing Sequence
The routing path is designed for a clockwise rotation when viewed from the front of the engine. Follow this sequence precisely to prevent slippage or failure:
- Crankshaft pulley: Start at the bottom-most pulley on the engine block.
- Alternator pulley: Route diagonally up to the alternator pulley on the driver's side.
- Power steering pump pulley: Move horizontally to the power steering pump pulley located near the center.
- AC compressor pulley: Proceed diagonally down to the AC compressor pulley on the passenger side.
- Tensioner pulley: Loop around the automatic tensioner pulley, which is typically mounted high on the passenger side.
- Return to crankshaft pulley: Complete the path by connecting back to the starting point.
Key Verification Tips for Fast Routing
After installation, verify correctness to save time on rework:
- Check tensioner: Use a breaker bar to fully retract the tensioner before threading the belt to avoid binding.
- Inspect pulleys: Ensure all pulleys are aligned, groove-side facing inward, with no debris or damage.
- Test rotation: Start the engine briefly—if it squeals or slips, recheck routing against the sequence above.
Always consult your vehicle's owner's manual or a trusted diagram source if unsure, as variations can occur based on aftermarket modifications.