M226 Without Electronic Locking Differential
SELECTION ADJUSTING WASHERSSide Gear Back Clearance
^ Assemble the differential parts if they are disassembled.
1. Place the differential case straight up so that the side gear to be measured is upward.
2. Using feeler gauges, measure the clearance between the side gear back and differential case at three different points, while rotating the side gear. Average the three readings to calculate the clearance. (Measure the clearance of the other side as well.)
Side gear back clearance: 0.305 mm (0.0120 in) or less.
^ If the side gear back clearance is outside of the specification, use a thicker or thinner side gear thrust washer to adjust. Refer to RFD-58, "Side Gear Back Clearance".
If the side gear back clearance is greater than specification:
Use a thicker side gear thrust washer.
If the side gear back clearance is less than specification:
Use a thinner side gear thrust washer.
CAUTION:
^ Insert feeler gauges with the same thickness on both sides to prevent side gear from tilting.
^ Each gear should rotate smoothly without excessive resistance during differential motion.
^ Select a side gear thrust washer for right and left individually.
NOTE: Side gear back clearance is clearance between side gear and differential case for adjusting side gear backlash.
Drive Pinion Height Adjusting Washer
^ Drive gear and drive pinion are supplied in matched sets only. Matching numbers on both drive pinion and drive gear are etched for verification. If a new gear set is being used, verify the numbers of each drive pinion and drive gear before proceeding with assembly.
^ The mounting distance from the center line of drive gear to the back face of drive pinion for the Model 226 final drive assembly is 109.5 mm (4.312 in).
On the button end of each drive pinion, there is etched a plus (+) number, a minus (-) number, or a zero (0), which indicates the best running position for each particular gear set. This dimension is controlled by a selective drive pinion height adjusting washer between drive pinion inner bearing race and drive pinion. For example: If a drive pinion is etched m+8 (+3), it would require 0.08 mm (0.003 in) less drive pinion height adjusting washer than a drive pinion etched "0". This means decreasing drive pinion height adjusting washer thickness; increases the mounting distance of drive pinion to 109.6 mm (4.315 in). If a drive pinion is etched m-8 (-3), it would require adding 0.08 mm (0.003 in) more to drive pinion height adjusting washer than would be required if drive pinion were etched "0". By adding 0.08 mm (0.003 in), the mounting distance of drive pinion was decreased to 109.4 mm (4.309 in) which is just what m-8 (a-3) etching indicated.
^ To change drive pinion adjustment, use different drive pinion height adjusting washers which come in different thickness.
^ Use the following tables as a guide for selecting the correct drive pinion height adjusting washer thickness to add or subtract from the old drive pinion height adjusting washer.
1. Make sure all parts are clean and that drive pinion bearings are well lubricated.
2. Assemble drive pinion bearings into Tools.
Tool number
A: - (8144)
B: - (6740)
C: - (6741)
3. Install drive pinion bearing inner race and drive pinion height adjusting washer to gear carrier using Tool as shown.
4. Turn the assembly several times to seat drive pinion bearings.
5. Measure the turning torque using Tool.
Tool number: ST3127S000 (J-25765-A)
Turning torque specification: 1.2 - 2.8 Nm (0.13 - 0.28 kg-m, 11 - 24 in-lb)
6. Tighten side bearing caps to the specified torque installing Tools as shown.
Tool number
A: - (6739)
B: - (D-115-2)
C: - (8541A-1)
D: - (D-115-3)
7. Put scooter block on pinion height block. Make sure that dial indicator is level adjusting pressure with a hand. Dial indicator indicates "0".
8. Slide dial indicator along arbor. Record the maximum.
9. Adjust drive pinion height adjusting washer so that the maximum will be "0".