Hendrickson AR2 series - Bar Pin End Bushing; Bar Pin Shims; Rubber Center Bushing

17730-241 21 Preventive Maintenance
AR2
™
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An indication that the bar pin end bushing
requires replacement is when one or more of
the following conditions apply:
Visual inspection of:
■
Contact areas (the flat face areas where
bar pin contacts the axle bracket) on the
bar pin reveals signs of excessive wear
■
The bolt holes in the bar pin reveals signs
of elongation or wear, see Figure 6-9
Bar pin replacement is required, see Figure 6-9,
if the bar pin thickness measures less than:
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 — 1.874" (47.59 mm)
■
 — 2.252" (57.2 mm)
BAR PIN SHIMS
An indication that the bar pin shims require replacement is when one or more of the following
conditions apply:
■
Visual inspection of contact areas on the shim reveals signs of excessive wear
■
The thickness of any single leg on the shim, is less than the measurement shown in
Figure6-10, replacement of bar pin shim is required
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Thickness
of Shim Leg
Minimum
Thickness
Required
Part Number
1
⁄8" (3.2 mm) 0.123" (3.1 mm) 50131-000
3
⁄16" (4.8 mm) 0.186" (4.7 mm) 50130-000
¼" (6.4 mm) 0.248" (6.3 mm) 50131-000
3
⁄8" (9.5 mm) 0.371" (9.4 mm) 57026-000
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An inspection of the center bushing is necessary when a vehicle is in the shop for major repair
work or every twelve months. Look for:
■
Any metal to metal contact
■
Worn, frayed, or distorted rubber in the center bushing
■
The bushing inner metal that is not centered in the bushing
■
Any equalizing beam to saddle contact