1986 Allegro Motorhome Manual

The 1986 Allegro Motorhome is a classic recreational vehicle featuring a durable fiberglass body, spacious interior living quarters, comprehensive electrical and plumbing systems, reliable chassis components, and user-friendly amenities for comfortable travel and camping. Below are key sections covering operation, maintenance, systems, specifications, and troubleshooting for this vintage motorhome model.

Features at a Glance

Key components: Fiberglass exterior body, Ford or Chevy chassis, living area with kitchenette, sleeping quarters, bathroom facilities, electrical system, plumbing system, and climate control.

Feature	Description
Chassis	Ford E-350 or Chevy P30 chassis with V8 engine
Body Construction	Fiberglass reinforced body for durability
Sleeping Capacity	4-6 persons depending on floorplan
Kitchen Facilities	3-burner stove, sink, refrigerator
Bathroom	Wet bath with toilet, shower, and sink
Electrical System	12V DC and 120V AC systems with converter
Water System	Fresh water tank, gray water tank, black water tank
Heating System	Forced air furnace
Air Conditioning	Roof-mounted AC unit
Generator	Optional Onan generator

Pre-Departure Checklist

Complete these checks before each trip to ensure safe operation.

1. Engine compartment: Check oil, coolant, transmission fluid levels.
2. Tires: Inspect for proper inflation and wear; check spare tire.
3. Electrical: Test battery charge; ensure converter is functioning.
4. Propane: Check tank level; test for leaks with soapy water.
5. Water system: Fill fresh water tank; ensure pumps work.
6. Safety equipment: Verify fire extinguisher, smoke detector, CO detector operational.

WARNING! Never operate propane appliances while driving. Ensure all systems are secured before travel.

Operating Instructions

Basic operation procedures for daily use.

1. Starting engine: Ensure parking brake engaged; turn key to start.
2. Electrical systems: Switch between shore power and generator as needed.
3. Water system: Turn on water pump switch; open faucets to purge air.
4. Propane appliances: Light stove and furnace according to manufacturer instructions.
5. Climate control: Set thermostat for furnace; use roof AC for cooling.
6. Leveling: Use leveling blocks on uneven terrain for stability.

CAUTION! Always ventilate when using propane appliances. Never leave open flames unattended.

Specifications

• Length: 24-32 feet depending on model.
• Width: 8 feet standard.
• Height: 10 feet 6 inches with AC unit.
• Engine: 7.5L Ford V8 or 7.4L Chevy V8.
• Transmission: 3-speed automatic.
• Fuel Capacity: 40-55 gallons gasoline.
• Fresh Water: 40-60 gallon capacity.
• Gray Water: 30-40 gallon capacity.
• Black Water: 30-40 gallon capacity.
• Propane: 20-30 gallon tank.
• GVWR: 10,500-12,000 lbs.

Controls and Instrument Panel

Dashboard controls and living area switches for comprehensive operation.

Driver's Area: Standard automotive controls plus motorhome-specific gauges (propane level, water levels, battery condition).

Living Area: Electrical panel with circuit breakers, water pump switch, furnace thermostat, lighting controls, appliance switches. Monitor panel for tank levels and battery status.

Systems: 12V DC lighting, 120V AC outlets when connected to shore power, water pressure system, propane distribution system, climate control systems.

Systems Overview

Detailed explanation of major motorhome systems.

1. Electrical: Dual battery system (engine and house), converter/charger, inverter if equipped.
2. Plumbing: Fresh water system with pump, water heater (6-10 gallon), drainage systems.
3. Propane: Storage tank, regulator, distribution lines to appliances.
4. HVAC: Roof air conditioner, forced air furnace, dash air conditioning.
5. Waste: Black water tank with toilet, gray water tank from sinks/shower.

Tip: Familiarize yourself with all system locations and shut-off valves for emergency situations.

Maintenance Schedule

Regular maintenance ensures longevity and reliability.

1. Engine: Oil change every 3,000 miles; tune-up annually.
2. Chassis: Lubricate fittings every 6 months; check brakes annually.
3. Tires: Rotate every 6,000 miles; check pressure monthly.
4. Batteries: Check water levels monthly; clean terminals quarterly.
5. Propane System: Leak test annually; replace regulator every 10 years.
6. Water System: Sanitize fresh water system every 6 months.
7. Roof: Inspect and clean seals annually; recaulk as needed.
8. Generator: Change oil every 100 hours; exercise monthly.

WARNING! Always disconnect battery and propane before performing maintenance. Use proper safety equipment.

Winterization Procedures

Protect your motorhome during cold weather storage.

1. Drain all water tanks completely.
2. Blow out water lines with compressed air.
3. Add RV antifreeze to drain traps and toilet.
4. Disconnect and remove batteries for indoor storage.
5. Clean and dry refrigerator; leave doors open.
6. Cover tires and protect exterior from elements.

CAUTION! Never use automotive antifreeze in water systems. Only use RV-specific antifreeze.

Care & Cleaning

Proper cleaning maintains appearance and prevents damage.

Exterior: Wash with mild soap and water; avoid abrasive cleaners on fiberglass. Use protectant on rubber seals.

Interior: Vacuum regularly; clean surfaces with appropriate cleaners. Treat upholstery with fabric protector.

CAUTION! Do not use high-pressure washers around seals and openings. Never use harsh chemicals on interior surfaces.

Safety Information

Important safety guidelines for motorhome operation and occupancy.

Fire Safety: Maintain working smoke and CO detectors. Keep fire extinguisher accessible. Never block exits.

Driving Safety: Allow for increased stopping distance. Be aware of height clearance. Use mirrors effectively.

Propane Safety: Shut off propane while refueling. Test for leaks regularly. Install propane detector.

Electrical Safety: Use proper grounding. Don't overload circuits. Use GFCI protection near water sources.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine won't start	Battery/ignition	Check battery connections; verify fuel supply; inspect ignition system.
No electrical power	Battery/converter	Check main fuse; test battery; verify converter operation.
Water pump not working	Power/air lock	Check fuse and switch; purge air from lines; inspect pump.
Furnace not igniting	Propane/thermostat	Verify propane supply; check thermostat settings; clean igniter.
Refrigerator not cooling	Level/power source	Ensure unit is level; check power source; clean burner assembly.
Roof leak	Seal damage	Inspect and reseal roof vents, seams, and AC unit.

Emergency: Know location of all emergency shut-offs (propane, electrical, water).

Service: Contact certified RV technician for complex repairs. Keep maintenance records.