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7. Use a suitable tool to remove the pinion seal.
To install: 8. Inspect the sealing surfaces of the pinion yoke for nicks or damage and
replace, as necessary. Examine the carrier bore and remove any burrs
that may cause leaks around the outside of the seal.
Fig. 3: Seal installation
9. Install the seal using a suitable installer.
10. Apply a seal lubricant to the outer diameter of the pinion flange and the
sealing lip of the new seal.
11. Install the pinion yoke on the drive pinion by taping with a soft-face
hammer until a few pinion threads project through the pinion yoke.
12. Install the washer an d pinion flange nut. While hol ding the pinion yoke,
tighten the nut to the same positi on as marked earlier, then tighten an
additional
1/16 in. (1.6mm) turn beyond the marks.
13. Install the driveshaft.
14. Install the rear wheels and tires. Check and add the correct lubricant, as
necessary.
BORG-WARNER REAR AXLE 1. Raise and safely support the vehicle.
2. Remove both rear wheel and tire assemblies.
3. Matchmark the driveshaft and pinion yoke so they may be reassembled
in the same position. Remove the driveshaft.
4. Using a beam-type inch pound to rque wrench on the pinion yoke nut,
measure and record the amount of pi nion bearing, axle bearings and
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seal preload. Turn the torque wrenc
h smoothly for several rotations and
record the amount of preload as the a ssembly is turning, not the initial
force required to start the assembly moving.
Preload is measured as the amount of torque required to turn the assembly.
5. Using a suitable tool to hold the pi nion yoke in place, remove the pinion
yoke nut and washer.
6. Place a suitable contai ner under the differential to catch any fluid that
may drain from the rear axle. Using a suitable tool, remove the pinion
flange.
7. Use a suitable tool to remove the pinion seal.
To install: 8. Inspect the seal surface of the pinion flange for tool marks, nicks or
damage and replace, as necessary. Examine the carrier bore and
remove any burrs that might cause leaks around the outside of the seal.
9. Install the seal 0.010 in. (0.2 5mm) below the flange surface using a
suitable seal installer.
10. Apply suitable seal lubricant to t he outer diameter of the pinion flange
and the sealing lip of the new seal.
11. Install the pinion flan ge on the drive pinion by taping with a soft hammer
until a few pinion threads projec t through the pinion flange.
12. Install the washer and pinion fla nge nut. While holding the pinion flange,
tighten the nut a little at a time and turn the drive pinion several
revolutions after each tightening, to set the bearing rollers. Check the
preload each time with a suitable inch pound to rque wrench until the
preload is 5 inch lbs. (0.6 Nm) more then the reading obtained during
disassembly.
13. Install the driveshaft.
14. Install the rear wheels and tires. Check and add the correct lubricant, as
necessary.
AXLE HOUSING
REMOVAL & INSTALLATION 1. Raise the vehicle and support it sa fely. Be sure that the rear axle
assembly is supported safely.
2. Disconnect shock absorbers from ax le. Remove the wheel assemblies.
3. Mark driveshaft and pinion flange, then disconnect driveshaft and support out of the way.
4. Remove brake line junction block bolt at axle housing. If necessary,
disconnect the brake lines at the junction block.
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Fig. 1: Exploded view of the rear axle and rear suspension component mounting
5. Disconnect the upper control ar ms from the axle housing.
6. Lower the rear axle assembly. Remove the springs.
7. Continue lowering the rear axle asse mbly and remove it from the vehicle.
To install: 8. Position the rear axle assembly into place and install the springs.
9. Connect the upper control a rms to the axle housing.
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10. Install the brake line j
unction block bolt at the ax le housing. Connect any
brake lines that were disconnected.
11. Install and secure the driveshaft a ligning the match marks made earlier.
12. Connect the shock absorbers to the axle and install the wheel
assemblies.
13. Lower the vehicle and replace any lost rear axle fluid.
DIFFERENTIAL ASSEMBLY
REMOVAL & INSTALLATION 1. Raise and safely support the vehicle.
2. Place a suitable contai ner under the differential. Remove the carrier
cover and drain the gear oil.
3. Remove the drive axles.
4. Mark the differential bearing caps L and R to make sure they will be
reassembled in their original location.
5. Using a suitable tool, remove the di fferential carrier. Be careful not to
damage the gasket sealing surface wh en removing the unit. Place the
right and left bearing outer races of the side bearing assemblies and
shims in sets with the marked different ial bearings caps so they can be
reinstalled in their original positions.
To install: 6. Inspect the differential carrier housi ng for foreign material. Check the ring
and pinion for chipped teeth, exce ssive wear and scoring. Check the
carrier bearings visually and by feel . Clean the differential housing and
replace components, as necessary.
7. Install the differential carrier. C heck the carrier bearing preload along
with the ring and pinion backlash, then adjust, as necessary. Tighten the
differential bearing cap bolts to 55 ft. lbs. (75 Nm) except on Borg-
Warner rear axles which are ti ghtened to 40 ft. lbs. (54 Nm).
8. Install the axles.
9. Install the carrier cover using a new gasket. Tighten the carrier cover
bolts to 20 ft. lbs. (27 Nm). Add the proper type and quantity of gear oil to
axle assembly.
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SPECIFICATION CHARTS
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ENGINE & ENGINE OVERHAUL
ENGINE ELECTRICAL
ENGINE ELECTRICAL
The engine electrical system can be brok en down into three inter-related, but
distinct systems:
1. The starting system.
2. The charging system.
3. The ignition system.
BATTERY AND STARTING SYSTEM
The battery is the first link in the chai n of mechanisms which work together to
provide cranking of the autom obile engine. In most modern cars, the battery is a
lead-acid electrochemical device consis ting of six two-volt (2V) subsections
connected in series so the unit is c apable of producing approximately 12V of
electrical pressure. Each subsection, or ce ll, consists of a series of positive and
negative plates held a short distance apart in a solution of sulfuric acid and
water. The two types of plates are of di ssimilar metals. This causes a chemical
reaction to be set up, and it is this reacti on which produces current flow from the
battery when its positive and negative te rminals are connected to an electrical
appliance such as a lamp or motor.
The continued transfer of electrons would ev entually convert the sulfuric acid in
the electrolyte to water and make t he two plates identical in chemical
composition. As electrical energy is removed from the battery, its voltage output
tends to drop. Thus, measuring batte ry voltage and battery electrolyte
composition are two ways of checking the ability of the unit to supply power.
During the starting of the eng ine, electrical energy is removed from the battery.
However, if the charging circuit is in good condition and the operating conditions
are normal, the power removed from the battery will be replaced by the
generator (or alternator) which will forc e electrons back through the battery,
reversing the normal flow, and restoring the ba ttery to its original chemical state.
The battery and starting motor are linked by very heavy electrical cable\
s
designed to minimize resistance to the flow of current. Generally, the major
power supply cable that leaves the batte ry goes directly to the starter, while
other electrical system needs are supplied by a smaller cable. During the starter
operation, power flows from the battery to the starter and is grounded through
the car's frame and the batte ry's negative ground strap.
The starting motor is a specially designed, direct current electric motor capable
of producing a very great am ount of power for its size. One thing that allows the
motor to produce a great deal of power is its tremendous rotating speed. It
drives the engine through a ti ny pinion gear (attached to the starter's armature),
which drives the very large flywheel ring gear at a greatly reduced speed.
Another factor allowing it to produce so much power is that only intermittent