Chevrolet LIGHT DUTY TRUCK (SERIES 10-35) Service Manual page 332

Leaf Spring Installation
1. Clean axle spring pad and position spring assembly
to axle. Position spring to insure clearance to hangers. The
shackle assembly must be attached to the rear spring eye
before installing shackle to rear hanger.
2. Install spring retainer plate and "U" bolts. Loosely
install retaining nuts, but do not torque at this time.
3. Jack frame as required to align spring and shackle
with spring hangers.
4. Install shackle bolt and nut and again reposition
spring, if necessary to align front eye. Install front eye bolt
and nut. Torque hanger and
specifications.
Make certain that the bolts are free-turning in their
bushings prior to torquing.
5. Lower vehicle so that weight of vehicle is on
suspension components
Fig. 3D-13--Rear S pring In sta lla tio n - G M odels (Cutaway
shackle fasteners to
and torque U-bolt nuts
Vans)
specifications.
6 . Lower vehicle and remove from hoist.
U-Bolt and Anchor Plate Installation
Fig. 3D-21 illustrates the mandatory sequence of
tightening U-bolt nuts. Tighten diagonally opposite nuts to
40-50 foot pounds, then tighten all nuts as shown to
specifications.
CAUTION: See CAUTION on page 1 of
this section, regarding "U"-Bolt fasteners.
SHACKLE REPLACEMENT
1. Raise vehicle on hoist. Place adjustable lifting device
under axle.
2. Remove load from spring by jacking frame.
3. Loosen spring-to-shackle retaining bolt, but do not
remove.
to
REAR SUSPENSION
LIG H T T R U CK SER V IC E MANUAL
3D-5