873712 Volvo.Penta Fuse

Necessary Parts
Cab Preparation
1. Remove the rear cab cover. 2. Install 6K-7954 Bar to the right inside rear cab compartment as shown in the illustration and photo above.3. Fasten the bar with a 3.0 mm (.12 in) fillet weld, BOTH VERTICAL SIDES, at location (A). 4. Install four 8D-3508 Bosses to the cab floor as shown in the illustration above. Install the bosses with a 3.0 mm (.12 in) fillet weld ALL AROUND at location (B).5. ARC requires an ON/OFF switch which is to be located on the right dash panel. Its location varies depending upon whether the truck has engine overspeed. See "Truck Without Overspeed" or "Truck With Overspeed".Truck Without Overspeed
Drill holes in the panel as shown in the illustration above. The switch assembly and film will be installed at a later time.Truck With Overspeed
Drill holes in the panel as shown in the illustration above. The switch assembly and film will be installed at a later time.Air System Installation
1. Assemble the valve group as shown in the illustration below.
3E-8978 ARC Valve Group. 1. 6D-1891 Connector. 2. 3J-1907 Seal. 3. 5P-4317 Connector. 4. 6D-3781 Valve Group. 5. 4H-6147 Connector. 6. 3D-7587 Elbow.2. Install the valve group to 6K-7954 Bar on the right sidewall as shown in the illustration below.
7. Two 8T-8915 Bolt. 8. Four 8T-4896 Washer. 9. Two 9G-9150 Clip. 10. 4D-6880 Hose Assembly. 11. 7D-4065 Hose Assembly. 12. 6G-1799 Hose Assembly. Use hardened washers to stand off valve mounting plate to relieve stress on valve body.3. Install hoses (10), (11) and (12) as shown in the illustration above. 4. Remove the cover under the cab. 5. Route hoses (10), (11) and (12) through the tunnel to the front. Identify the hoses before running them through the tunnel. 6. Remove existing hose going from the retarder valve (handle) to the service brake valve.7. Install 5H-4778 Elbow into the existing tee on the service brake check valve where the retarder hose was removed. Install 6G-1799 Hose Assembly (12), from the ARC shuttle valve, into the elbow. 8. Install 7D-4065 Hose Assembly (11) into the existing connector on the retarder valve where the service brake hose was removed. 9. Remove existing elbow and hose from front lower port of service brake valve (pedal). Install 2D-7325 Tee as shown in illustration. Install elbow and hose that were removed into the tee. Add 4H-6147 Connector and 4D-6880 Hose Assembly (10) into tee as shown in the illustration.10. Use tie straps as needed to secure new hoses to existing hoses.Wiring Installation
1. Disconnect both VE connectors of the main cab harness from the cab junction plate.119-4865 Harness Assembly 2. Splice 450-YL wire from 119-4865 Harness Assembly into 450-YL wire located in 24 pin DRC connector of 104-9666 EUI Retrofit Harness Assembly.3. Splice 892-BR wire from 119-4865 Harness Assembly into 892-BR wire of the EPTC-II 104-9667 Transmission Harness. Splice 893-GN wire from 119-4865 Harness Assembly into 893-GN wire of the EPTC-II 104-9667 Transmission Harness. Solder and cover the splices with heat shrink tubing.
Typical Example4. Remove the hose from the elbow in location #12 of the side junction plate. Install 2D-7325 Tee into the elbow. Install 107-0615 Switch Assembly into the tee as shown in the photo above. Install the hose back into the tee. 5. Attach D991-OR and 202-BK wire terminals from 119-4865 Harness Assembly to the ARC pressure switch.6. Connect D988-WH and 202-BK sure seal breakout from 119-4865 Harness Assembly to ARC control solenoid (located on the rear of the valve).7. Connect D989-BU and 202-BK sure seal breakout from 119-4865 Harness Assembly to ARC supply solenoid (located on the top of the valve). Secure each connection in clips as shown in the illustration. 8. Attach 202-BK ground wire terminal from 119-4865 Harness Assembly to switched side of disconnect switch.9. Route the remaining ARC harness through tunnel to front of cab. 10. Connect 308-YL from 119-4865 Harness Assembly to key switch on terminal "R". 11. Disconnect (454-GN and 200-BK) sureseal connector from existing manual retarder switch. Tape ends and tie back. Assemble connector (D992-PU and 202-BK) from 119-4865 Harness Assembly, to the manual retarder switch. 12. Disconnect 454-GN and 200-BK wires from existing retarder lamp. Tape ends and tie back to the harness. Route 454-GN and 202-BK breakout, from 119-4865 Harness Assembly, through grommet and attach to the retarder lamp.13. Apply 106-9119 Film to dash cover plate (that has been reworked). 14. Install 4D-1836 Switch Assembly in dash cover plate. Fasten three 7N-8419 Terminals to 985-BR, 200-BK and 986-PK switch wires on 119-4865 Harness Assembly. Connect the wires to the switch as shown in the illustration.15. Use tie straps as needed to secure new ARC harness to existing harnesses.16. Install the cover that was removed from under the cab.ARC Control Box
1. Apply 3E-9028 Film on 111-6253 ARC Control Box. 2. Install ARC control box to 109-3057 Plate with four 5M-3062 Bolts and four 8T-4896 Washers. 3. Install two 9D-3721 Switches to 2A-7121 Plate with existing hardware. 4. Install 2A-7121 Plate to 109-3057 Plate with 5M-3062 Bolt, 8T-4896 Washer and 6V-8801 Nut. See photo for bolt location. 5. From 119-4865 Harness Assembly connect D994-BU and 202-BK wires to service clear switch (upper) and D993-YL and 202-BK wires to service set switch (lower) as shown in the illustration.