Chevrolet 10 1971 Series Chassis Service Manual page 396

ELECTRICAL— BODY AND CHASSIS 12-10
1. Open hood and remove ground cable from battery.
2. Standing outside vehicle reach up under instrument
cluster and disconnect speedometer cable by first
depressing tang on rear of speedometer head, pushing
then pulling cable free from head as tang is depressed.
3. Unplug instrument panel harness connector from
printed circuit.
4. Disconnect oil pressure line from gauge if so equip­
ped. Place cloths beneath line connector to catch
drips.
5. Remove (2) two nuts attaching instrument cluster
studs to lower opening in instrument panel.
6. Pull top of cluster away from instrument panel and
lift out bottom of cluster.
7. Remove cluster to bench for futher disassembly
(laminated printed circuit, speedometer head, gauges).
Flatface Cowl Models (Fig. 10)
1. Disconnect battery ground cable.
2. Disconnect electrical connectors and oil pressure
pipe.
Oil pressure line connector may leak
NOTE:
oil when opened; wrap with cloth.
3. Remove three screws attaching cluster housing to
Fig. 10— Instrument Cluster Assembly - F/F Cowl
4. Pull cluster from opening in dash panel.
5. To install, reverse removal procedure.
INDICATOR A N D ILLUMINATING
BULB REPLACEMENT
10-30 Conventional Cab and P Models
1. Turn bulb holder counter-clockwise to remove from
2. Pull bulb straight out to remove from holder.
3. Install replacement bulb in holder, press inward to
4. Insert holder into housing, with lugs on holder enter­
LAMINATED CIRCUIT REPLACEMENT
10-30 Conventional Cab Models (Fig. 11 & 12)
1. Remove instrument cluster assembly as previously
2. Remove all instrument cluster lamp assemblies.
3. Remove laminated circuit retaining screws.
dash panel.
the cluster housing.
lock in place.
ing notches in case, and turn clockwise to lock in
place.
described in this section.
10-30 CHEVROLET TRUCK SERVICE MANUAL