Chevrolet 1977 light duty truck, Service Manual

Page: 796 / 861

C H A R G IN G S Y S T E M IN D IC A T O R
C o n d itio n
P o s s ib le C a u s e
C o r r e c tio n
Light on, ignition off.
1. S h o rte d positive diode. 1. L o c a te an d replace
s h o r te d diode.
Light not on, ignition
on and engine not
running.
1. Bulb b u r n e d out. 1. R e p la c e bulb.
2. O p e n in light circuit. 2. L o c a te an d co rrect open.
3 . O pen i n f i e l d .
3. R e p l a c e r o t o r .
L ig h t on, engine
ru n n in g above idle
speed. 1. N o g e n e ra to r ou tp u t.
1. C h e c k an d c o rrect cause
o f no o u tp u t.
2. S h o rte d negative diode. 2. L o c a te an d replace s h o rted
diode.
3. Loose o r b roken
g e n e r a to r belt.
3. T ig h te n o r replace an d
tig h te n g e n e ra to r belt.
ON-VEHICLE SERVICE
COMPONENT PART
REPLACEMENT
N E U T R A L S T A R T S W ITC H
C-K M odels (Fig. 8 -1 2 )
Replacem ent and Adjustm ent
1. Disconnect battery ground cable.
2. Disconnect electrical harness at switch.
3. Remove switch m ou n tin g screws and remove
switch.
4. Position shift lever in neutral gate notch.
5. Insert ,096"gauge pin to depth o f 3 /8 inch into
switch gauge hole, switch assembly is lixed in neutral
position with internal plastic shear pin.
6. Assemble the switch to column by inserting the
switch c a rrie r tan g in the shift tube slot and fasten in
position by assem bling m ou n tin g screws to retainers.
N O T E : If re ta in e r strips out it must be replaced.
7. Remove .096" gauge pin.
8. Move shift lever out o f neutral gate notch to
park gate position to shear switch internal plastic pin.
9. Return shift lever to neutral gate notch.
10. Switch gauge hole will freely adm it .080"
gauge pin to a depth o f 3 /8 inch.
11. If pin will not freely en ter gauge hole, switch
must be reset as below.
12. Connect battery ground cable and electrical
harness.
Reset Installation Procedure
1. Place shift lever in neutral gate notch.
2. Loosen attaching screws.
3. Rotate switch on column and insert .096" gauge
pin to depth o f 3 /8 inch.
4. Tighten attaching screws.
5. Repeat installation procedure Steps 7 through
12 above.
G-P M odels
Replacement
(Fig.
8 -1 2 )
1. Raise vehicle on a hoist.
2. Disconnect the switch harness from the switch.