Caterpillar EC15N EC18N EC20N EC25N EC25EN EC25LN EC30N Chassis & Mast Service Manual - PDF DOWNLOAD

Page 35

FRONT AXLE & REDUCTION DIFFERENTIAL Suggestions Reassembling Differential Pinions

Reassembling Differential Case

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.

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.

Backlash between differential gears and pinions

A

0.18 to 0.23 (0.0071 to 0.0091)

B

0.5 (0.020)

Unit: mm (in.) A = Assembly Standard B = Repair or service limit

Installing Bearing Caps Be sure to know which are the left and right caps and to put each cap in place correctly. Tightening torque for bearing cap bolts

12.8 kgf•m (93 lbf•ft) [126 N•m]

200244 200241

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]

2.15


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