Instruments - Cluster/Speedometer Cable Service
87amcjeep03
29E329
1987 COMANCHE
MAY 1987
ELECTRICAL Attention: Workshop, Parts Department
TYPE II INSTRUMENT CLUSTER SERVICE
This I.S. Note contains service procedures for the Type II instrument cluster used in 1987 Comanche models. The Type II cluster was phased into production in September 1986.
Information in this I.S. Note includes cluster and speedometer cable removal/installation and updated SRT/TIC information.
FIGURE 1:
TYPE II INSTRUMENT CLUSTER IDENTIFICATION
The Type II cluster is identified by the letters "NS" at the base of the speedometer and tachometer (or fuel gauge on models without a tachometer) (Fig. 1).
The speedometer cable attachment has been changed and can no longer be disconnected by reaching up under the instrument panel.
NOTE: The lettering shape on instrument faces is not a reliable means of identification. The instruments in Type II clusters have two graphic styles.
TYPE II INSTRUMENT CLUSTER REMOVAL - WITHOUT CRUISE CONTROL
1. Position the vehicle on a hoist.
2. Disconnect the battery negative cable.
3. Raise the vehicle on the hoist.
4. Disconnect the speedometer cable at the transfer case or transmission.
5. Remove the bracket attaching the speedometer cable to the driver side frame rail.
6. Move the speedometer cable forward and upward to provide slack.
7. Lower the vehicle.
FIGURE 2:
8. Remove the instrument panel bezel screws (A) and remove the bezel (B) (Fig. 2).
FIGURE 3:
9. Remove the screws attaching the cigarette lighter (C) and the switch housings (D) and (E) to the instrument panel (Fig. 3). Then move the housings aside for working clearance.
10. Remove the screws attaching the cluster to the instrument panel and carefully pull the cluster and speedometer cable rearward.
FIGURE 4:
11. Disconnect wire harness connectors (F) (Fig. 4) from the cluster.
FIGURE 5:
12. Squeeze the speedometer cable lock tabs (G) and remove the cable (H) from the speedometer (Fig. 5).
13. Remove the instrument cluster (J) (Fig. 5).
14. If necessary, disassemble the cluster and remove the speedometer, tachometer or gauge to be serviced.
TYPE II INSTRUMENT CLUSTER INSTALLATION - WITHOUT CRUISE CONTROL
1. Connect the speedometer cable to the speedometer. Squeeze the cable lock tabs (G) (Fig. 5) and slide the cable onto the speedometer head.
FIGURE 4:
2. Connect the two harness connectors (F) (Fig. 4) to the cluster.
3. Move the cluster and speedometer cable forward and position the cluster in the instrument panel. Then install the cluster attaching screws.
FIGURE 3:
4. Install the cigarette lighter (C) and switch housings (D) and (E) in the instrument panel (Fig. 3).
FIGURE 2:
5. Install the instrument panel bezel (B). Align the bezel on the panel and snap it into place. Then install the bezel attaching screws (A) (Fig. 2).
6. Raise the vehicle.
7. Connect the speedometer cable to the transfer case or transmission and attach the cable bracket to the driver side frame rail.
8. Lower the vehicle.
9. Connect the battery negative cable.
TYPE II INSTRUMENT CLUSTER REMOVAL - WITH CRUISE CONTROL
1. Disconnect the battery negative cable.
FIGURE 6:
2. Working from under the instrument panel, disconnect the upper half of the speedometer cable (K) from the speed switch (L) (Fig. 6).
FIGURE 2:
3. Remove the screws (A) attaching the bezel (B) to the instrument panel (Fig. 2). Then unsnap and remove the bezel.
FIGURE 3:
4. Remove the screws attaching the cigarette lighter (C) and the switch housings (D) and (E) to the instrument panel (Fig. 3). Then move the housings aside for working clearance.
5. Remove the screws attaching the cluster to the instrument panel and carefully pull the cluster and speedometer cable rearward.
FIGURE 4:
6. Disconnect wire harness connectors (F) (Fig. 4) from the cluster.
FIGURE 5:
7. Squeeze the speedometer cable lock tabs (G) and remove the cable (H) from the speedometer (Fig. 5).
8. Remove the instrument cluster (J) (Fig. 5).
9. Disassemble the cluster and remove the speedometer, tachometer, or gauge to be serviced.
FIGURE 5:
TYPE II INSTRUMENT CLUSTER INSTALLATION - WITH CRUISE CONTROL
1. Connect the speedometer cable to the speedometer. Squeeze the cable lock tabs (G) (Fig. 5) and slide the cable onto the speedometer head.
FIGURE 4:
2. Connect the two harness connectors (F) (Fig. 4) to the cluster.
3. Move the cluster and speedometer cable forward and position the cluster in the instrument panel. Then install the cluster attaching screws.
FIGURE 3:
4. Install the cigarette lighter (C) and switch housings (D) and (E) in the instrument panel (Fig. 3).
FIGURE 2:
5. Install the instrument panel bezel (B). Align the bezel on the panel and snap it into place. Then install the bezel attaching screws (A) (Fig. 2).
6. Working from under the instrument panel, connect the upper half of the speedometer cable to the speed switch.
7. Connect the battery negative cable.
SPEEDOMETER CABLE REPLACEMENT
A one-piece speedometer cable is used on models without Cruise Control. The instrument cluster must be removed in order to disconnect the one-piece cable from the speedometer. Refer to the appropriate instrument cluster removal/installation procedure in this I.S. Note.
A two-piece cable is used on models with Cruise Control. The lower cable can be replaced without having to remove the instrument cluster. However the cluster must be removed to replace the upper cable. Refer to the appropriate cluster removal/installation procedure in this I.S. Note.
SRC/TIC INFORMATION
OPERATION DESCRIPTION NUMBER TIME TIC
CO. INSTRUMENT CLUSTER, TYPE II - 8791 0.7 see note
R&R (Without Cruise Control)
CO. CABLE, SPEEDOMETER, 8-372
ONE-PIECE-REPLACE Inc. 8793 0.8 8-373
R&R Type II cluster
CO. INSTRUMENT CLUSTER, TYPE II -
R&R (With Cruise Control) Inc. replace 8792 0.5 see note
speedometer upper cable if necessary
CO. CABLE, SPEEDOMETER LOWER - 8035 0.4 8-372
REPLACE 8-373
NOTE: This operation is used to facilitate another repair. Use the causal part to identify the TIC. Vibration/Noise - 8-372 Broken - 8-373
FILING INSTRUCTIONS
Record this I.S. Note on page C-113 and file it in the M.R. 277 manual.