TM 5-5420-234-14&P
4-91.1 MAIN FRAME JUNCTION BOX HARNESS REPLACEMENT (MODEL B
ONLY).
This task covers:
a.
Removal
b. Installation
c.
Follow-on Maintenance
INITIAL SETUP
Tools and Special Tools
Tool Kit, General Mechanic's:
Tag, Identification (as required) (Item 23, Appendix E)
Automotive (SC 5180-90-N26)
Materials/Parts
Equipment Condition
Adhesive-Sealant, Silicone, RTV
Batteries disconnected (TM 9-2320-279-20)
a. Removal.
(1) Loosen four captive screws (1) and remove main frame junction box cover (2) from junction box (3).
(2) Remove connector P7 (4).
NOTE
Tag and mark wires prior to removal.
(3) Remove wire no. 1475 (5) from terminal no. 1 (6), wire no. 1470 (7) from terminal no. 2 (8), and wire
no. 1466 (9) from terminal no. 3 (10).
(4) Remove wire no. 1469 (11) from terminal no. 4 (12), wires no. 1435 (13) from terminal no. 5 (14) and
no. 6 (15), and wire no. 1461 (16) from terminal no. 7 (17).
(5) Remove four locknuts (18), screws (19) and main frame junction box harness (20) from junction box (3).
Discard locknuts.
b. Installation.
WARNING
Adhesives, solvents and sealing compounds can burn easily, can give off harmful
vapors, and are harmful to skin. To avoid injury or death, keep away from open fire
and use in well ventilated area. If adhesives, solvents or sealing compound gets on
skin or clothing, wash immediately with soap and water.
NOTE
Connector should be installed with notch facing rear of vehicle.
(1) Apply silicone adhesive-sealant to flange of main frame junction box harness (20) and install in junction
box (3) with four screws (19) and new locknuts (18).
(2) Install wire no. 1461 (16) on terminal no. 7 (17), wires no. 1435 (13) on terminals no. 5 (14) and no. 6
(15), and wire no. 1469 (11) on terminal no. 4 (12).
(3) Install wire no. 1466 (9) on terminal no. 3 (10), wire no. 1470 (7) on terminal no. 2 (8), and wire no.
1475 (5) on terminal no. 1 (6).
(4) Install connector P7 (4).
(5) Install main frame junction box cover (2) on junction box (3) and tighten four captive screws (1).
Change 1