8-18
Chapter 8 Clutch and driveline
21.19 The DOJ boot dimension must be as shown when the
band@amps are installed
19 Slip the boot over the outer race and adjust the joint until the dimen-
sfonshown in the accompanying illustration is achieved. Slip a screwdriv-
er between the joint and boot to equalize the pressure, then install the
band clamps (follow the directions in the boot kit).
20 Patik the grease supplied with the boot kit into the Birfield joint to re-
place the grease that was wiped off, then install the boot (the clamping in-
structions are supplied with the boot kit).
21 Repeat the procedure for the remaining driveaxle.
2i Fronf axle disconnect solenoid and actuator - check
and replacement
Refer to illustration 22.1
1 On some 4WD models, the front axle is engaged into four-wheel drive
by a vacuum-operated solenoid valve assembly and actuator which oper-
ates a free-wheeling clutch assembly (see illustration).
Check
2 With the engine running, disconnect the hose from the vacuum
source and check for strong vacuum.
3 Disconnect the electrical connectors from the solenoid valve assem-
bly and check for 12 volts at the connector’s blue-yellow wire. Check for
continuity to ground at the yellow-green wire (with four-wheel drive en;
ww-0.
4 With the solenoid valves disconnected, check the resistance across
the solenoid terminals. The resistance should be 36 to 46 ohms at 60-de-
grees F. If not within these specifications, replace the solenoid valve as-
sembly.
5 Turn off the engine and check the vacuum hoses and pipes from the
solenoid valve assembly to the actuator for kinks, cracks, or other dam-
age.
6 Disconnect the vacuum hoses at the actuator and, with a hand vacu-
um pump, apply vacuum to one side and then the otherofthe actuator (be
sure to cap the other side when applying vacuum). The actuator should
shift the free-wheeling clutch in and out. If it doesn’t, replace the actuator.
Replacement
7 To replace the solenoid valve assembly, remove the vacuum hoses
and electrical connectors from the solenoid valves.
8 Remove the fasteners and replace the solenoid valve assembly.
9 To replace the actuator, remove the vacuum hoses and pin connect-
ing the shift rod to the actuator.
10 Remove the fasteners and replace the actuator assembly.
22.1 The front axle disconnect solenoid, actuator and
free-wheeling clutch assembly used on some later
1
2
3
4
5
6
7
8
9
10
11
12
13
14
4WD models
Vacuum hoses
Check valve
Solenoid valve electrical connectors
Solenoid valve assembly
Vacuum pipe assembly
Vacuum tank
Pin
Actuator assembly
Differential mounting bracket
Housing tube
Free-wheeling engage switch
Gasket
Free-wheeling clutch assembly
Front differential camkr assembly
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