STAR TekInfo

Diagnostic Manual, Chassis and Drivetrain,
Volume 2

LOCATION:

Mechanical Test Program - Test

Test step	Test scope	Test connection			Test condition	Nominal value	Possible cause/Remedy
1.0	Mechanical disengaged frictional torque		Torque wrench (15 - 65 Nm)		Turn torque wrench through 90° (see 42, Figure 1, step 2).	See 2.0	2.0
2.0	Mechanical engaged frictional torque	8	N30/2 Torque wrench (80 - 260 Nm)	10	Disconnect ASD control module(N30/2). (see 42, Figure 1, step 3). Return wheel to its starting position in 1.0 (see 42, Figure 1, step 2). Engine: at idle Pressure within hydraulic system: 50 - 63 bar. (see 33 1.0) Turn torque wrench through 90° (see 42 figure 1, step 4). Observe and record the value.	Measured frictional torque in 2.0 minus measured frictional torque in 1.0 should be > 100 Nm.	If frictional torque difference is < 100 Nm, replace rear axle center piece.