40 GEAR BOX G-76 Select suitable snap ring, which will fit snugly. Snap rings are available from 2.0 to 2.4 mm in the step of 0.1 mm. Ref Fig. 86 Measure the dimensions for the selection of shims. (As per procedure mentioned). Shims (10/10a) are available in thickness of 0.05, 0.125, 0.240 & 0.5 mm. Fig. 86 iii. SUBASSEMBLYOF COUNTER SHAFT Heat the constant mesh 3rd /4th gear to 100°C - 120°C and press over counter shaft with proper support in such a way that bigger gear i.e. 4th is facing upward. Fit circlip. In the same way fit 5th gear over other side such that longer boss is facing upwards. Ensure proper abutment of gear on the counter shaft. Press inner race of taper roller bearing over counter shaft 5th gear side end with help of drift, Pt.No. 2654 5890 26 06 and handle Pt.No. 2640 5890 35 11. Place outer race over it. Reverse the assembly, slide spacer and press another taper roller bearing inner race. Place outer race over it. Ref Fig. 87 Counter shaft Taper roller half bearing preloading by 0.03 to 0.06 mm. iv. SUBASSEMBLY OF DRIVE SHAFT Press inner race of taper roller bearing with the help of drift Pt.No. 2654 5890 26 05 ref fig.88 Fit compression spring, spacer of required thickness, thrust bearing and roller cage in drive shaft bore. Select spacer thickness as per procedure given. (Telco make) 0.07 to 0.10 mm end play to be maintained only on drive shaft side. Fig. 87 Fig. 88
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