Page 701 - Workshop Manual - Aumark (BJ1051)

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Front axle-steering knuckle

15. Checking knuckle pin and steering knuckle
(a) Using micrometer, measure diameter of knuckle pin.
Diameters:

Diameter
Vehicle model
Standard value Limit value
1051 series 32.000 mm 31.984~32.000 mm

1061 series 32.000 mm 31.984~32.000 mm

1089 series 40.000 mm 40.000~40.025 mm

If knuckle pin diameter is out of limits, replace with a new knuckle pin.
(b) Using micrometer, measure inside diameter of steering knuckle bushing.
Inside diameters:

Diameter
Vehicle model
Standard value Limit value

1051 series 32.000 mm 32.025~32.064 mm
1061 series 32.000 mm 32.025~32.064 mm
24
1089 series 40.000 mm 40.051~40.078 mm

If inside diameter of steering knuckle bushing is out of limits, replace with a new steering knuckle
bushing.
(c) Using dial indicator, measure knuckle pin to steering knuckle bushing clearance.
• Fix steering knuckle with a table vice, and insert knuckle pin into steering knuckle
bushing.
• Push knuckle pin radially by hand to check knuckle pin to steering knuckle bushing
clearance.
ٛ Clearances:

Vehicle model Torque

1051 series 0.025~0.080 mm

1061 series 0.025~0.080 mm
1089 series 0.026~0.078 mm

If knuckle pin to steering knuckle bushing clearance is out of limits, measure diameter of knuckle
pin and inside diameter of steering knuckle bushing respectively, and replace as needed.
(d) Check steering knuckle.
• Using magnaflux, check such places as knuckle journal and upper and lower ears for
cracks.
• Check threads on end of knuckle spindle for damage (especially when more than 2
threads are damaged).
• Check knuckle journal for serious wear.
If any of above defects exists, replace with a new steering knuckle.

Page 701