Drive Pinion Shaft Assembly: Assembly

Measure the dimension "A" of drive pinion shaft.
ST 398643600 GAUGE

Fig 1: Measuring Dimension "A" Of Drive Pinion Shaft
Using a press, press-fit the new roller bearing into the specified position.
NOTE: If excessive force is applied to roller bearing, the roller bearing will not turn easily.

Fig 2: Identifying Drive Pinion Shaft And Roller Bearing
After fitting a new O-ring to the shaft, attach the drive pinion collar to the shaft.
Install the lock washer to drive pinion shaft in the proper direction.

Tighten the new lock nuts using ST1, ST2 and ST3.

Calculate the lock washer and lock nut specifications using following formula.

T2 = L2/(L1 + L2) x T1

T1: 116 N.m (11.8 kgf-m, 85.3 ft-lb)

[Required torque setting]

T2: Tightening torque

L1: ST2 length 0.072 m (2.83 in)

L2: Torque wrench length

Example:

TORQUE WRENCH LENGTH SPECIFICATION

Torque wrench length m(in)	Tightening torque N.m (kgf-m, ft-lb)
0.4(15.75)	98 (10.0, 72)
0.45(17.72)	100(10.2,73.8)
0.5(19.69)	101 (10.3,74.5)
0.55(21.65)	102 (10.4, 75)

ST1 18667AA010 HOLDER

ST2 499787700 WRENCH

ST3 499787500 ADAPTER

NOTE: Attach ST2 to torque wrench as straight as possible.

Fig 3: Identifying Torque Wrench Length

Measure the starting torque of the bearing. Make sure the starting torque is within the specified range. If the torque is not within specified range, replace the roller bearing.
Starting torque:

7.6 - 38.1N (0.776 - 3.88 kgf, 1.7- 8.6 lb)

Fig 4: Measuring Starting Torque Of Bearing
Crimp the lock nut in 2 locations.
Measure dimension "B" of the drive pinion shaft.
ST 398643600 GAUGE

Fig 5: Measuring Dimension "B" Of Drive Pinion Shaft
Calculate the thickness "t" (mm) of the drive pinion shim.
t = 6.5±0.0625 - (B - A)

Select three or less shims from following table.

THICKNESS CHART