K 1500 Truck 4WD V8-454 7.4L (1988)
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Remove the brake caliper from the hub/disc. Suspend the caliper assembly with a wire hook away from the work area.
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Remove the wheel bearing cap, nut, and washer from the spindle.
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Remove the hub/disc. Care should be used so that the outer bearing is not damaged. Save the inner and outer bearing cone and rollers.
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Remove the splash shield and gasket.
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Remove tie rod ball stud from the knuckle using tool J24319-01. Discard nut.
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Remove the other end of the tie rod from the adjuster tube. Discard the tie rod. Save the clamp and nut.
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Remove and discard the inner wheel bearing seal.
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Remove the upper and lower ball studs from knuckle. Use tool J36607.
FLOOR JACK MUST REMAIN UNDER CONTROL ARM SPRING SEAT DURING REMOVAL AND INSTALLATION TO RETAIN THE
SPRING AND CONTROL ARM IN POSITION.
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Position a floor jack under the lower control arm near the spring seat. Raise the jack until it just supports the lower control arm.
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Remove and discard the knuckle.
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Install new knuckle. Torque upper ball joint nut to 90 N-m (66 lb.ft), and the lower ball joint nut to 128 N-m (94 lb.ft). Tighten the nuts to align
the cotter pins. Do not tighten more than 1/6 turn. Install new cotter pins.
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Reinstall splash shield gasket.
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Reinstall splash shield. Torque bolts to 16 N-m (12 lb.ft).
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Install new outer tie rod to the adjuster tube. The number of threads on both the inner and outer rod ends must be within three threads. The clamp
and bolt should be positioned as shown in Figure No. 1.
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Seat the tie rod ball stud in the knuckle using tool J29193. Torque nut to 54 N-m (40 lb.ft).
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Reinstall hub/disc to the spindle using a new inner wheel bearing seal. Refer to hub, bearing & seal replacement, section 3C-11 of the service
manual.
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Apply grease to the outboard side of the outer bearing. Reinstall nut and washer to the spindle. Tighten nut to 16 N-m (12 lb.ft) while turning the
hub/disc forward by hand. Adjust the nut to a "just loose" position by hand, then back the nut off until the hole in the spindle aligns with a slot in
the nut. Do not back the nut off more than 1/2 flat. Install new cotter pin.
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Reinstall cap to the hub/disc.
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Reinstall brake caliper. Torque caliper mounting bolts to 38 N-m (28 lb.ft).
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Reinstall wheel and tire assembly. Torque nuts to 123 N-m (90 lb.ft).
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Repeat required steps to replace outer tie rod and knuckle on opposite side of truck, if required.
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Lube tie rod ball studs with chassis lubricant part number 1052497 or equivalent.
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Lower vehicle.
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Refill master cylinder with Delco Supreme II, part number 1052535, or Dot 3 brake fluid and bleed-brake system if required.
FIGURE NO. 5
