4-Cylinder
Check belt tension using Burroughs Tension Gauge (BT-33-73F) at longest belt run. Adjust belt tension if necessary. See BELT TENSION SPECIFICATIONS (4-CYLINDER) table.
Note. Corolla and MR2 use an automatic belt tensioner. Adjustment is not required.
| Application | New Belt Lbs. (kg) | Used Belt Lbs. (kg) | ||
|---|---|---|---|---|
| Camry, Camry Solara & RAV4 | ||||
| Generator | ||||
| With A/C | 140-190 (64-86) | 100-120 (45-54) | ||
| Without A/C | 100-150 (45-68) | 75-115 (34-52) | ||
| Power Steering | 95-145 (43-66) | 60-100 (27-45) | ||
| Celica | ||||
| Generator | ||||
| With A/C | 170-180 (77-82) | 95-135 (43-61) | ||
| Without A/C | 100-150 (45-68) | 75-115 (34-52) | ||
| Power Steering | 99-121 (45-55) | 44-77 (20-35) | ||
| Corolla | (2) | (2) | ||
| ECHO | 121-143 (55-65) | 55-88 (25-40) | ||
| MR2 | (2) | (2) | ||
| Tacoma & 4Runner | ||||
| A/C | 135-185 (61-84) | 80-100 (36-45) | ||
| Generator | 116-169 (53-77) | 66-88 (30-40) | ||
| Power Steering | 135-180 (61-82) | 85-120 (39-54) | ||
| (1) Measure belt tension with Burroughs (BT-33-73F) tension gauge. (2) Automatic belt tensioner is used. Adjustment is not required. | ||||
| (1) | Measure belt tension with Burroughs (BT-33-73F) tension gauge. |
| (2) | Automatic belt tensioner is used. Adjustment is not required. |
BELT TENSION SPECIFICATIONS (4-CYLINDER) (1)
V6
Check belt tension using Burroughs Tension Gauge (BT-33-73F) at longest belt run. Adjust belt tension if necessary. See BELT TENSION SPECIFICATIONS (V6) table.
| Application | New Belt Lbs. (kg) | Used Belt Lbs. (kg) | |
|---|---|---|---|
| Avalon, Camry, Camry Solara & Sienna | |||
| Generator | 170-180 (77-82) | 95-135 (43-61) | |
| Power Steering | 150-185 (68-84) | 95-135 (43-61) | |
| Tacoma, Tundra & 4Runner | |||
| A/C | 135-185 (61-84) | 80-120 (36-54) | |
| Generator | 140-180 (64-82) | 80-120 (36-54) | |
| Power Steering | 135-180 (61-82) | 85-120 (39-54) | |
| (1) Measure belt tension with Burroughs (BT-33-73F) tension gauge. | |||
| (1) | Measure belt tension with Burroughs (BT-33-73F) tension gauge. |
BELT TENSION SPECIFICATIONS (V6) (1)
V8
Automatic belt tensioner is used on Land Cruiser and Tundra. Adjustment is not required. If belt tension is not within "A" range of automatic belt tensioner, replace belt. (Scheme 20)
Scheme 20
BRUSHES
- Brushes should slide smoothly in holders. Replace brushes if damaged or worn. On ECHO, MR2, Tundra and 4Runner, new brush exposed length should be .374-.453" (9.5-11.5 mm). On all other models, new brush exposed length should be .413" (10.5 mm).
- On all models, minimum exposed length should be more than .059" (1.5 mm). There are 2 different brush holders used. One brush holder is replaced as an assembly, and the other has replaceable brushes. If exposed brush length is less than minimum, replace brushes or brush holder assembly. Install new brush springs when replacing brushes.
ROTOR
- Check rotor for open field windings by using an ohmmeter across slip rings. Rotor resistance should be within specification. See «ROTOR RESISTANCE SPECIFICATIONS»(ref-8274-S00072682442000081700000) table.
- Check rotor for shorts to ground by connecting ohmmeter between slip ring and rotor shaft. Ohmmeter should indicate no continuity. Check slip rings for wear or pitting. Standard slip ring diameter is .559-.567" (14.2-14.4 mm). Turn slip rings on lathe if necessary. Minimum slip ring diameter is .504" (12.8 mm).
| Application | (1) Ohms | |
|---|---|---|
| Avalon | 2.1-2.5 | |
| Camry & Camry Solara | ||
| 4-Cyl. | 2.7-3.1 | |
| V6 | 2.1-2.5 | |
| Land Cruiser, MR2, Sienna, Tacoma, Tundra & 4Runner | 2.1-2.5 | |
| All Other Models | 2.7-3.1 | |
| (1) Specification given is with temperature at 68°F (20°C). | ||
| (1) | Specification given is with temperature at 68°F (20°C). |
ROTOR RESISTANCE SPECIFICATIONS
STATOR
Connect ohmmeter between 2 stator leads. Continuity should exist between all stator leads. Connect ohmmeter between each stator lead and metal core. Continuity should not exist. If stator does not test as indicated, replace stator.
DIODES
- With diode/rectifier assembly removed and on bench, contact positive diode plate terminal with one ohmmeter probe. Using other ohmmeter probe, contact each diode lead in same plate. Note ohmmeter reading. Reverse ohmmeter probes, and repeat tests for all diodes.
- All diodes should show continuity in one direction and no continuity in opposite direction. If any diode is defective, replace diode/rectifier assembly.