Tacoma Extra Cab 4WD L4-2693cc 2.7L DOHC MFI (1997)
Balance Shaft: Testing and Inspection
INSPECT NO. 1 (RH) AND NO. 2 (LH) BALANCE SHAFTS
1. Using a cylinder gauge, measure the inside diameter of the balance shaft bearing.
Bearing inside diameter (from front side):
No. 1 (RH): 38.025 - 38.045 mm (1.4970 - 1.4978 inch)
No. 2 (LH): 37.525 - 37.545 mm (1.4774 - 1.4781 inch)
2. Using a micrometer, measure the diameter of the balance shaft main journals.
Main journal diameter (from front side):
No. 1 (RH): 37.969 - 37.985 mm (1.4948 - 1.4955 inch)
No. 2 (LH): 37.449 - 37.465 mm (1.4744 - 1.4750 inch)
3. Subtract the balance shaft main journal diameter measurement from the balance shaft bearing inside diameter measurement.
Standard oil clearance:
No. 1 (RH): 0.040 - 0.076 mm (0.0016 - 0.0031 inch)
No. 2 (LH): 0.060 - 0.096 mm (0.0024 - 0.0038 inch)
Maximum oil clearance: 0.15 mm (0.0059 inch)
If the clearance is greater than maximum, replace the cylinder block and balance shaft.
