GMC 1986 P-Truck Service Manual page 355

3D-10 REAR SUSPENSION
3. Stabilizer bar (108) to the frame.
• For the C 30/3500 series vehicles; position
the link bolt (115), washers (116), grommets
(117), spacer (114), retainer (119) and nut
(120).
• For the P 30/3500 (32) series vehicles;
attach the clamp (110), bolts (111), washers
(106), and nuts (105) in position.
Tighten
• Nuts (120 and 105) to the " Specifications"
at the end of this section.
4. Lower the vehicle to the ground.
LEAF SPRING ASSEMBLY
Remove or Disconnect (Figures 1 through 7)
• Raise the vehicle on a hoist and support the rear
axle independently to relieve tension on the leaf
springs.
1. Stabilizer bar from the vehicle if equipped.
• Refer to " Stabilizer Bar," in this section.
2. Leaf spring (10) from the rear hanger (25).
• Loosen, but
spring-to-shackle nut and bolt.
• Nut and the bolt securing the shackle to the
rear hanger (25).
3. Leaf spring (10) from the front hanger (18).
• Nut and the bolt securing the leaf spring
(10) to the front hanger (18).
4. Shackle (6) from the leaf spring (10).
• Nut and bolt securing the shackle to the leaf
spring.
5. Leaf spring from the axle.
• Nuts (22), and washers (21).
• Rear stabilizer anchor (36) if equipped, the
anchor plate, spacers, shims, and the
auxiliary spring (32), if equipped.
• U-bolts (8).
• Leaf spring is free of the vehicle.
|~ ~| Install or Connect (Figures 1 through 7, and
k
)
11
NOTICE: For steps 1 and 4, refer to the
"Notice" on page 3D-1 of this section.
1. Leaf spring (10) to the rear axle.
• Leaf spring into position.
• Spacers, shims, the auxiliary spring (32) if
equipped, and the anchor plate.
• U-bolts (8), washers (21), ^nd nuts (22).
do not rem ove, the
Tighten
• Nuts (22), in a diagonal sequence 1-3-2-4
(figure 11), initially to 25 N m (18 ft. lbs.).
Then final torque in a diagonal sequence
1-3-2-4 (figure 11) to the " Specifications" at
the end of this section.
2. Shackle (6) to the leaf spring (10).
• Bolt (2), washers (3), and nuts (5), making
sure the bolt is positioned correctly (figures
1 through 7).
• Do not tighten.
3. Leaf spring to the front hanger (18).
• Bolt (2), washers (3), and nut (5).
• Do not tighten.
4. Leaf spring to the rear hanger (25).
• Bolt (2), washers (3), and nut (5).
• Nuts (5) and bolts (2), to the " Specifications" at
the end of this section.
5. Stabilizer bar to the vehicle if equipped.
• Refer to " Stabilizer Bar," in this section.
6. Lower the support on the rear axle. Lower the
vehicle to the ground.
BUSHING REPLACEMENT
PRESS OUT TYPE BUSHINGS
|<~+| Remove or Disconnect (Figures 1, 3, and 7)
1. Leaf spring (10) from the vehicle.
• Refer to " Leaf Spring Assembly," in this
section.
2. Bushing from the leaf spring (10).
• Place the leaf spring in a press and press
out the bushing.
|~»<-| Install or Connect (Figures 1, 3 and 7)
1. Bushing into the leaf spring (10).
• Use a press to pro pe rly position the
bushings.
2. Leaf spring (10) to the vehicle.
• Refer to " Leaf Spring Assembly," in this
section.
PRY OUT TYPE BUSHINGS
|<~+| Remvoe or D is c o n n e c t (F ig u re s 2 and 4
through 7)
1. Leaf spring (10) from the vehicle.
• Refer to " Leaf Spring Assembly," in this
section.