Control Valve................................................................................................................................ 7

Suggestions

Reassembling Differential Pinions

The thrust washers of the differential gears are to be used for adjusting the backlash between the differential gears and pinions.Measure the backlash and, if it exceeds the limit, replace the thrust washers.

Backlash between differential gears A 0.18 to 0.23 (0.0071 to 0.0091) and pinions B 0.5 (0.020) Unit:mm (in.)

A = Assembly Standard B = Repair or service limit

Reassembling Differential Case

After putting the case assembly in place on the carrier, install the bearing caps tentatively by making the cap bolts snug tight.The caps are to be secured tight after the bearing preload has been adjusted.

Installing Bearing Caps

Be sure to know which are the left and right caps and to put each cap in place correctly.

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Installing Reduction Gear

Apply LOCTITE No.271 to the bolts for holding the reduction gear to the case.Be sure to tighten these bolts evenly so as not to strain the gear.

Tightening torque for reduction gear bolts 12.0 kgf•m (87 lbf•ft) [118 N•m] Tightening torque for bearing cap bolts 12.8 kgf•m (93 lbf•ft) [126 N•m]

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Inspection and Adjustment

Side Bearing Preload

Tie a wire on the reduction gear tooth and hook a spring scale to the wire.Tighten the side bearing nuts while reading the spring scale until the specified preload is obtained.

NOTE

Before measuring the preload, tap the back of the reduction gear with a copper hammer while rotating the gear to center between bearing.

Preload for differential case side bearings 15 to 30 kgf Min. (1.1 to 2.2 lbf) [1.5 to 2.9 N]

1.32 to 2.5 kgf•cm Max. (2.9 to 5.5 lbf•ft) [13 to 25 N•m]

As force applied to reduction gear in tangential direction.

Reduction Gear Backlash

Adjust the backlash between the reduction gear and pinion after installing the differential carrier assembly to the transmission case.To measure the backlash, set a dial indicator with its spindle pointing squarely to the tooth face of the reduction gear.With the pinion held, move the gear back and forth to read the indicator.Adjust the backlash using the left and right side bearing nuts and pinion shims.

Backlash between reduction gear and pinion 0.15 to 0.25 (0.0059 to 0.0098) Unit:mm (in.)

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Backlash

Decrease Increase

Decrease

Increase

Backlash Decrease Increase

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Reduction Gear Face Runout

Using a dial indicator, check the reduction gear for face runout at the maximum radius position in back of the gear.If the runout exceeds the limit, check the reduction gear bolts for tightness; retighten if necessary.Check the tapered roller bearings for condition.Readjust or replace them if necessary.

Face runout of A 0.05 (0.0020) maximum reduction gear B 0.05 (0.0020) maximum Unit:mm (in.)

A = Assembly Standard B = Repair or Service Limit

Tooth Contact

Check the gear reduction tooth contact.To check, apply a thin coat of bluing to several gear teeth on both drive and coast sides.Press forward on the reduction pinion and rotate the reduction gear back and forth until a contact pattern is noted on both concave and convex faces of the gear teeth. To adjust the tooth contact, refer to the chart.

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