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GMC ZE06581 1976 Maintenance Manual Supplement page 55

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4- 1 4 REAR SUSPENSION
PROBLEM
START VEHICLE.
MOVE TRANSMISSION
LEVER TO "DRIVE"
POSITION . TELL-TALE
LIGHT ONLY PART-
IALLY ILLUMINATES
START VEHICLE .
MOVE TRANSMISSION
LEVER TO "DRIVE"
POSITION . TELL-TALE
LIGHT REMAINS ON
AFTER 10-15 SECOND
DELAY .
START VEHICLE .
TELL-TALE LIGHT
INTERMITTENTLY
LIGHTS WHEN
MOVING TRANS-
MISSION SELECTOR
LEVER TO "DRIVE"
POSSIBLE CAUSE
1 . Defective light bulb .
11 . Defective time-delay relay .
CORRECTION
l . Replace burnt out bulb .
1 . Replace relay .
1 . Defective time-delay realy .
1 . Replace relay .
2 . Defective neutral, start,
2 . Adjust switch or replace as
B/U and safety switch .
necessary .
SHOCK ABSORBERS
See "FRONT SUSPENSION", Section 3A of
Maintenance
Manual
X-7525
for
trouble
diagnosis of shock absorbers.
TIME DELAY RELAY
BROWN W/WHITE
STRIPE
YELLOW
BROWN
IGNITION BUS BAR
TELL TALE PANEL
NEUTRAL START SWITCH
A-5561
Figure 13-Tell-Tale Warning Light Schematic
AIR LEAKS
With the air system at normal operating
pressure coat all suspension air line connect-
ions with soap and water solution . Air leakage
will produce soap bubbles .
No leakage is
permissible .
Leakage at air line connections
can sometimes be stopped by tightening con-
nection. If this does not stop the leak replace
the affected fittings .
1 . Cut end of hose (tube) off square .
2 . Place brass insert into end of tube and
put appropriate fitting over it (figure 14) .
FITTING
BRASS INSERT
TUBE
ASSEMBLED FITTING
Figure 14-Coupling Assembly

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