Balancer Unit Assembly Note
Balancer Unit Assembly Note1. Confirm by visual inspection that there is no damage to the balancer unit gear and verify that the shaft rotates smoothly.
^ If there is any malfunction, replace the balancer unit.
Caution
^ Due to the precision interior construction of the balancer unit, it cannot be disassembled.
2. Remove the cylinder block lower blind plug and install the SST.
3. Rotate the crankshaft clockwise so that the No. 1 piston is at TDC of the compression stroke. (The position crank weight contacts the SST.)
4. Install the adjustment shim to the seating face of the balancer unit.
5. With the balancer unit marks at the exact top center, assemble the balancer unit to the cylinder block.
6. Set the SST as shown in the figure and measure the gear backlash using a dial gauge.
Note
^ To measure the backlash precisely, insert a flathead screwdriver into the crankshaft No.1 crank weight area and set both the rotation and the thrust direction with the flathead screwdriver, using a prying action, as shown in the figure.
^ If it exceeds the maximum specification, remeasure the backlash and, using the adjustment shim selection table, select the proper shim, according to the following procedure.
Caution
^ When measuring the backlash, rotate the crankshaft one full rotation and verify that it is within the specified range at all of the following six positions: 10, 30, 100, 190, 210, 280 ATDC.
Maximum gear backlash
0.005-0.101 mm (0.00019-0.0039 in)
1) Using master shim (No.50), assemble the balancer unit to the cylinder block and measure the backlash.
2) Select the proper adjustment shim according to the measured value.
3) Install the selected adjustment shim to the balancer unit and assemble the balancer unit to the cylinder block.
Adjustment shim selection table
