Question 1

How should the differential case components be cleaned and inspected for damage on Chevrolet Corvette?

Accepted Answer

Clean the differential case components in solvent and examine them for cracks, improper shape of threaded bolt holes, severe wear, scoring, or grooving in the clutch pack area, and scored or damaged case side bearing flange. When cleaning the gears and shafts, use a solvent and check the gears for chips, cracks, pitting, heat discoloration, abnormal wear, high wear or scoring in side gear pin bores, excessive wear or scoring on side gear washing, abnormal wear or grooves on output gears splines, damage to side gear threaded bolt holes, unusual wear or grooves on ring gear; damage to ring gear vehicle speed interval relucor ring lobes. Check the shafts for abnormal wear, grooved, worn or damaged splines, and an impaired C-clip groove. Wipe the discs and plates down with solvent and check them for abnormal wear, scoring or grooving on the separator plate friction surfaces friction plates with uneven wear or worn friction material, bent or warped plates or discs, and worn, scored, or collapsed Belleville washer. Lay the plates and discs on a flat surface to check for warpage. Examine the bearing rollers and cups for pitting, scoring, grooves, excessive wear, or some other defect, and observe heat discoloration of yellow to dark blue tones, indicating excessive loading or improper lubrication; bearings or cups depicting heat decolorization should be replaced. In addition, look for deformed or damaged bearing cages.

Question 2

How to replace the Differential Carrier Assembly on a 4.2L In-Line Six Cylinder on Chevrolet Trailblazer?

Accepted Answer

In order to replace the Differential carrier assembly on a 4.2l in-line six cylinder, remove the front tires and the wheels, and later on, the engine protection shield. Remove the engine oil and front drive axle, followed by disconnecting the front propeller shaft from front axle. It wraps the bearing caps with tape in order to prevent loss of roller bearings and removes the abs wiring harness of the retainers, the brake hose retaining bolts, and the front drive axle vent hose. Then, remove the left and right upper ball pinch bolt and nut, the left and right upper shock module retaining nuts, and the front stabilizer bar links from frame. Remove the front drive axle of each front wheel drive along the output of the front drive axle, secure each front wheel drive of the front drive axle to the frame with mechanics wire or hook to suspend the front shock module and Steering Knuckle. Unscrew the power steering gear assembly, the inner shaft of the front drive axle, and the front drive axle from the Oil Pan, then take off the Oil Pan and front drive axle out of the vehicle. For installation, begin by securing the front drive axle to the frame and install the Oil Pan. Mount the front drive axle to the Oil Pan and make sure the front drive axle mounting bolts have been installed properly and secured to a torque of 85 nm (63 ft. Lbs.). Next, place the inner axle to the front drive axle and to power steering gear. Take the left and right front wheel drive shafts out of the frame, then take off the left and right shock module and steering knuckles from its support. Mount the right and left front wheel drive shafts to the front drive axle, the vent hose at the front drive axle and the left and right shock modules at the frame and tighten the upper shock module retaining nuts to 100 nm (74 ft. Lbs.). Take the Steering Knuckle, join it with the upper Control Arm, put on the upper ball joint pinch bolt and nut, while tightening the upper side of the shock module bolts to 40 nm (30 ft. Lbs.). Connect the front stabilizer bar links to the frame, the brake hose retaining bolts (to 25 Nm (18 ft. Lbs.)), and the right and left abs wiring harness to the retainers. Lastly, replace the front propeller shaft from the front axle, refilling the front drive axle with, and engine fluids, proper, install the engine protection shield, and replace the tires and wheels.

OEM Chevrolet Differential

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