Symptoms
No symptoms until it breaks. It's on the service schedule at 90,000 miles, so a truck without receipts is due.
The fix, step by step
- Drain the coolant, cover the radiator with cardboard, then remove the fan, belts and crank pulley.
- You'll need a big wrench, a cheater bar and something to hold the crank.
- Replace the timing belt, tensioner and idlers, the water pump with its gasket and O-ring, the thermostat and gasket, and ideally the cam and crank seals while you're in there.
- One IH8MUD write-up recommends taking photos and bagging bolts as you go, and finds the factory manual a general guide rather than a step-by-step.
Tools & part numbers
- 3/4-in drive breaker bar and cheater
- crank-holding tool
- pulley puller
- seal puller
- thread locker
- FIPG gasket maker. IH8MUD parts list (check fitment for your year): water pump 16100-59275-83, timing belt 13568-09070, serpentine belt 90916-02586, thermostat 90916-03100 + gasket 16346-50010, idlers 13503-0F010 / 13505-0F010, crank seal 90311-A0001, cam seals 90311-38065 (x2).
Where to buy the parts
Timing belt kit with tensioner, 1998–2007 UZJ100/LX470 (BELTTK021)CruiserTeq ↗Amazon ↗
Toyota timing belt 13568-09070LexusPartsNow (OEM) ↗Amazon ↗
Toyota water pump assembly 16100-59275-83LexusPartsNow (OEM) ↗Amazon ↗
Thermostat, 1998–2007 UZJ100 2UZ (RAD03100)CruiserTeq ↗Amazon ↗
Hunting a used or discontinued part? Search eBay Motors for Toyota Land Cruiser 100 Series parts →
Rated for a competent home mechanic with a decent tool kit. Confirm torque figures, fluids and procedures against the factory service manual for your VIN, support the truck on stands rather than a jack, and work at your own risk (disclaimer). Some parts links are affiliate links, which pay us a small commission at no cost to you.