Chevrolet 70 Series 1970, Service Manual

Page: 765 / 841

CHASSIS ELECTRICAL AND INSTRUMENTS 12-19
T ra n sm issio n T em perature
Gauge
2 Engine Oil P ressu re Gauge
3 Speedom eter
4 T achom eter
5 Engine T em perature Gauge
14 13 12 11 10 9
6
A m m eter
7 Brake Application Air P ressu re
8
Main System Air P ressu re
9 L.H. Turn Signal
10 D ifferential Lock T e ll-ta le
11 Low Oil T e ll-ta le
12 Water T em perature T e ll-ta le
13 Low A ir T e ll-ta le
14 R.H. Turn Signal
15 Fuel Gauge
16 V oltm eter
T - 2 3 5 0 - 2
Figure 16—Instrument Cluster (Conv. Cob Models—9500 Series) (Typical)
ALUM. TILT CAB MODELS
T hese v e h ic le s are equipped with gauge and
t e ll- t a le panels a s shown in figure 19. E lec trica l
connections at r e a r of gauge and t e ll- ta le pan els
a re shown in fig u r e s
2 0
and
2 1
.
The t e ll-ta le panel is located in front of driver
betw een the sp eed om eter and tach om eter. The t e ll­
ta le panel contains a le f t - and right-hand d ir e c ­
tion al t e ll- ta le , d ifferen tial lock t e ll- ta le , low oil
t e ll- t a le , hot engine t e ll-ta le and a low a ir t e ll- ta le .
The gauge panel, located in con sole to right of
d riv er as shown in figu re 19, contains a clu ste r of
fiv e to nine gauges. Standard gauges include the
engine tem perature gauge, o ilp r e s s u r e gauge, v o lt­
m eter, a ir gauge, and fuel gauge. Optional gauges
include the am m eter, a ir induction sy ste m r e s t r ic ­
tion gauge, a ir brake gauge, and the engine o il
tem perature gauge.
NOTE: N eedle p osition on many gauges is im ­
m aterial with the control sw itch in "OFF" or
"ACCESSORY" position .
INSTRUMENT PANEL
GAUGE REPLACEMENT
To rem ove gauges shown in figu re 19 from the
c o n so le p roceed a s follow s:
1. D isconnect negative battery cab le from bat­
tery term inal or pull m a ster circu it b reak er sw itch
out to p revent accidental grounding. R em ove a c ­
c e s s panel a s d escrib ed p reviou sly under c h a ssis
junctions.
2. R em ove s c r e w s which attach gauge panel to
co n so le, then tilt panel outward far enough to reach
connections at back of gauges.
3. D isconnect w ir e s an d /or lin e from gauge.
R em ove retaining nuts and w a sh ers, then rem ove
gauge and sp a cer from panel.
CHEVROLET SERIES 70-90 HEAVY DUTY TRUCK SHOP MANUAL