Sterling Trucks Acterra MX - Manual (Page 76)

cause loss of vehicle control resulting in property
damage, serious personal injury or death.
Hendrickson Leaf Spring
Assembly Inspecting
NOTE: See Fig. 7 for this procedure.
1. Inspect the spring hangers for wear of the spring
pin holes, cams, and the spring hanger legs.
2. If equipped with the "RTE" or "UE" series, the
gap between the rear (No. 2) spring hanger and
the top spring leaf should measure at least 3/8
inch (9.5 mm) in an unloaded condition.
If the measurement is less than 3/8 inch (9.5
mm), install new rear (No. 3) extension hangers.
Lubricate the bolt threads with SAE 20 oil.
Tighten the 1/2–13 locknuts with hardened
washers 85 lbf·ft (115 N·m).
3. Inspect the spring leaves for cracks, gouges,
wear, or abnormal bends. The no. 1 main and
no. 2 wrapper spring leaves (the top two spring
leaves) may be individually replaced. If equipped
with the "RTE" or "UE" series suspension, the
nos. 1, 2, and 3 spring leaves (the top three
spring leaves) may be individually replaced. If a
spring leaf is damaged below these numbers in a
pack, replace the spring assembly. In addition,
replace both spring assemblies to ensure even
spring deflection.
Hendrickson Radius Rod
Bushing Checking
1. Without detaching the torque arms, attempt to
move (by hand) each of the radius-rod ends up,
f320039a 05/27/93
1
2
3
1. Beam Hanger
2. Equalizer Beam
3. Jack
Fig. 5, Raising the Beam End
f320110a 05/27/93
1
2
2
3 4
5
NOTE: Do not use the three-piece adapter without the
intermediate tube.
1. Nut
2. Adapter
3. Intermediate Tube
4. Inner Metal of Beam
End Bushing
5. Beam Hanger
Fig. 6, Three-Piece Adapter-Type Beam End Connection
f320112a 05/27/93
1
2 3
4
A
A. Minimum gap of 3/8 inch (9.5 mm).
1.
Forward (no. 1) Spring Hanger
2. Spring Eye Pin
3. Rear (no. 2) Spring Hanger
4. Rear (no. 3) Extension
Fig. 7, Unloaded RTE or UE Spring Suspension
Suspension
32
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