Complete repair guide for the Thor Outlaw – AC Capacitor & Fan Motor Service. Follow these steps to diagnose and fix the issue yourself.
Parts & Tools You’ll Need
- Fits for Dometic 3312195.000 Air Conditioner RV AC Motor Capacitor 60/5 MFD, Heavy Duty Air Conditioner Capacitor Replacement, Compatible with Dometic 3312195000 RV Air Conditioner Models — RV AC dual run capacitor (for Dometic or Coleman-Mach)
- HHQ RV Air Conditioner Motor with Capacitor, Direct Replacement for Coleman Mach RV AC Fan Motor, Replaces Fasco D1092, 1/3 HP, 115 Volts, 1675 RPM, 5-Year Warranty — RV rooftop AC fan motor
- 3106996022 3106996.022 Heat & Cool Thermostat Relay Analog Control Circuit Board Kit for Dometic RV Air Conditioner (White) — RV AC thermostat / control board
- CRC (05084-12PK) Brakleen Non-Chlorinated Brake Parts Cleaner – 14 oz., (Pack of 12) — AC evaporator/condenser coil cleaner foam
- LEDBarz RV Air Conditioner Shroud Cover Screws (10 Pack) for Dometic RV Brisk II and Penguin II Roof Top Air Conditioner, Replacement Parts for Dometic 3310724.0040000002 — Rooftop AC shroud / outer cover
- Dongxw Self Leveling RV Roof Sealant White, 4 Pack Camper Roof Sealant, Lap Sealants for RVs Roofs, Waterproof Flexible RVs Sealants and Caulk for Trailer, Maintenance, Repair — AC roof gasket & self-leveling sealant
- AMI PARTS FCR6 Fin Comb Set for Air Conditioner FCR6 Coil Fin Comb Ring Straighten Evaporator Condensor — Fin comb / coil straightener tool
- FKM Infrared Thermometer Gun Non-Contact Laser Temperature Gun,-58°F~986°F(-50°C~530°C) AdjustableEmissivity,Digital Thermometer Gun for Industrial,Kitchen Cooking,Oven,Automotive,HVAC,Not for Human — Non-contact infrared thermometer
Step 1: Diagnose AC Failure and Prepare Workspace
Start by identifying whether your Thor Outlaw’s AC unit is failing due to capacitor or fan motor issues. Listen for a humming sound without the fan spinning (capacitor failure) or a complete lack of cooling despite the compressor running (fan motor failure). Turn off power at the main breaker, allow the rooftop unit to cool for 15 minutes, and gather your tools on a stable ladder or roof platform—never work on a hot AC unit as internal temperatures can exceed 150°F.
Step 2: Remove Rooftop AC Shroud and Disconnect Power
Unscrew the bolts securing the rooftop AC shroud/outer cover (typically 4-6 fasteners around the perimeter) and carefully lift it away to expose the internal components. Locate and photograph the wire connections to the capacitor and fan motor before disconnecting them, ensuring you have a reference for reassembly. Use an insulated screwdriver to safely discharge any residual power from the capacitor by bridging the terminals briefly—this prevents electrical shock even after the unit is powered off.
Step 3: Replace RV AC Dual Run Capacitor
Identify your capacitor’s microfarad (µF) rating, typically between 35-50 µF for Dometic or Coleman-Mach units, and note the voltage specification printed on the label. Unbolt the old capacitor from its mounting bracket and install the new RV AC dual run capacitor in its place, ensuring the terminals align properly with the wire connectors. Reconnect the wires firmly to both capacitor terminals—you’ll typically see leads for the compressor, condenser fan, and indoor blower motor.
Step 4: Inspect and Replace Fan Motor Assembly
Examine the existing RV rooftop AC fan motor for signs of corrosion, seized bearings, or visible damage to the fan blade. Unbolt the motor mounting bracket (usually 3-4 fasteners) and disconnect the motor wiring harness, then slide out the old unit and position the new RV rooftop AC fan motor in alignment with the condenser housing. Verify that the fan blade spins freely by hand before securing all bolts to 15-20 foot-pounds of torque, and ensure the blade clears the shroud by at least ¼ inch.
Step 5: Clean Condenser Coils and Straighten Fins
Apply AC evaporator/condenser coil cleaner foam across the entire coil surface, allowing it to sit for 5-10 minutes to break down accumulated dust and debris buildup. Rinse thoroughly with low-pressure water (below 40 PSI) from bottom to top to avoid forcing dirt deeper into the fins, then allow the coils to air dry completely. Use a fin comb/coil straightener tool to gently realign any bent aluminum fins—working in one direction at a time to prevent damaging the delicate cooling surfaces.
Step 6: Reseal and Reinstall AC Shroud Cover
Inspect the AC roof gasket for cracks, hardening, or deterioration and replace it with a new AC roof gasket if you notice any compromise to the seal. Apply a thin bead of self-leveling sealant around the gasket mounting surface and carefully lower the rooftop AC shroud back into position, aligning the bolt holes precisely. Tighten all shroud fasteners in a cross-pattern (like tightening wheel lugs) to ensure even pressure and prevent roof leaks, finishing with a second pass to 10-12 foot-pounds of torque.
Step 7: Test System Performance and Verify Proper Operation
Restore power at the main breaker and set your RV AC thermostat/control board to cool mode at 72°F, listening for the compressor to engage and the fan motor to spin smoothly within 60 seconds. Use a non-contact infrared thermometer to measure the temperature difference between the return air (should read room temperature) and the discharge air (should be 15-20°F cooler) to confirm proper cooling performance. Allow the system to run for 10-15 minutes, then check that the condensation drain line is actively dripping water—a sign that the evaporator coil is functioning correctly.