TIMING BELT INTERFERENCE CAUTION
Note. CAMSHAFT DRIVE BELTS OR TIMING BELTS: The condition of camshaft drive belts should always be checked on vehicles which have more than 50,000 miles. Although some manufacturers do not recommend replacement at a specified mileage, others require it at 60,000-100,000 miles. A camshaft drive belt failure may cause extensive damage to internal engine components on most engines, although some designs do not allow piston-to-valve contact. These designs are often called "Free Wheeling". Many manufacturers changed their maintenance and warranty schedules in the mid-1980's to reflect timing belt inspection and/or replacement at 50,000-60,000 miles. Most service interval schedules shown in this section reflect these changes. Belts or components should be inspected and replaced if any of the following conditions exist
- Crack Or Tears In Belt Surface
- Missing, Damaged, Cracked Or Rounded Teeth
- Oil Contamination
- Damaged Or Faulty Tensioners
- Incorrect Tension Adjustment
| Application | Engine | Replacement Interval (Miles) |
|---|
| ES250 | 1990-91 | 2.5L V6 "2VZFE" | (2) 60,000 |
| ES300 |
| 1992-93 | 3.0L V6 "3VZFE" | 60,000 |
| 1994-96 | 3.0L V6 "1MZFE" | 60,000 |
| GS300 | 1993-96 | 3.0L 6-Cyl. "2JZGE" | 60,000 |
| LS400 | 1990-96 | 4.0L V8 "1UZFE" | (2) 60,000 |
| SC300 | 1992-96 | 3.0L 6-Cyl. "2JZGE" | 60,000 |
| SC400 | 1992-96 | 4.0L V8 "1UZFE" | (2) 60,000 |
| (1) Manufacturer does not identify engines as having possible interference problems. (2) Although the vehicle manufacturer does not recommend a specific scheduled maintenance interval, aftermarket belt manufacturers suggest the belt be replaced at 60,000 mile intervals. |
| (1) | Manufacturer does not identify engines as having possible interference problems. |
| (2) | Although the vehicle manufacturer does not recommend a specific scheduled maintenance interval, aftermarket belt manufacturers suggest the belt be replaced at 60,000 mile intervals. |
TIMING BELT INTERFERENCE VERIFICATION (1)
