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 1962 PD4106  

 

     

 

Highly modified and Converted Coach, 1962 GM 4106. This is offered in a package

complete with a 1986 El Camino that is completely equipped for towing. Pictures are

available.

Much to describe: Starting with the power train:

Cummins 903 with an Allison V 730 Automatic transmission. Removed from an

American Flyer Coach and modified to fit into the 4106. Propane injection has been

added. This four-stroke engine has more torque than the two-stroke Detroit and makes the

coach go up hills much easier and makes cruising a pleasure. The radiator was changed at

the same time and there has never been a cooling problem with this power train. A

lubifiner oil filter has been added which increases oil capacity and filtering ability

allowing greater time between oil changes. The air filter is an AFE (Advanced Flow

Engineering) that is good for 50,000 miles, then you clean, re-oil and use again. The air

intake system has been extended to the roof, which provides cleaner air and a greater

quantity, helped by the ram effect. The Allison V 730, rebuilt by Allison, has

approximately 30K miles on it. A Stone-Bennett Shifter controls the transmission. The

Stone-Bennett is an electrically controlled, air-activated shifter. It has a momentary

toggle switch with a digital display at the driver’s station. There are lockouts so that you

cannot start the engine unless in neutral and cannot shut off the engine unless in neutral.

A Bendix Cruise Control has been installed and it keeps the speed within plus or minus 1

mph.

The propane injection system has an oil pressure switch and a manifold pressure switch

in addition to the master switch at the driver’s station. The oil pressure switch prevents

the system being turned on unless the engine is running and the manifold pressure switch

allows the propane to be injected only when power above cruise is called for. I use the

propane only for hill climbing or if fast acceleration is needed.

Full time Sheppard power steering has been added and a VIP custom Steering wheel

installed.

The Braking system has been converted to the MiniMax, doing away with the driveline

parking brake. The engine has a Pac Brake (Exhaust Brake) that minimizes wear on the

service brakes. US Coach recently checked all the brakes and bearings and replaced any

necessary parts.

A custom leveling system was designed and installed that allows the coach to be leveled

for parking while retaining the GM auto level system for road travel. All accomplished

with the flip of a switch.

A new windshield washer system was installed.

Tankage:

Standard fuel tank is 165 gallons. An auxiliary tank of 50 gallons supplies the heating

system and generator. It is refilled automatically from the main tank. The main tank is

equipped with a Centronics capacitance type quantity indicator. It is accurate enough that

I can normally estimate the amount of fuel needed within five gallons. For what it is

worth, we have averaged 7.5 mpg overall.

Fresh water tank is 144 gallons made from ¼” food grade ABS plastic.

Holding tanks are both 90 gallons each, both made from ¼” ABS plastic. All tanks have

baffling. Electric powered dump valves, designed by Doug Swartz of Phase Four

Industries, (A GeMs member) are located inside the bay. The bay is heated for cold

weather operation.

Also located in the “Utility Bay is the water pump, made by Aquatec. It will provide up

to 5,3 gpm at 65 psi. All fresh water plumbing is ½” copper pipe. All Waste is standard

ABS DWV.

Heating system is the Aqua Hot by Vehicle Systems. It provides forced hot water to three

zones: Bedroom, Bathroom, and front living area, each having their own thermostat. It

has a diesel-fired boiler for primary heat. Diesel is drawn from the auxiliary tank. The

Aqua Hot also heats domestic water. It is designed so that it uses engine heat when

traveling and, with the flip of a switch, will preheat the engine. There is also a 120 Volt

AC backup heater that will provide heat when demand is low.

Peninsula windows have replaced all windows, with sliders at the front and rear, while

the two side windows are fixed. All have the darkest tint allowed by law.

Cooling is accomplished by two Dometic split A/C 13,500 BTU systems. The

compressor/condenser units are located in the old A/C condenser bay. The Evaporator

units are located inside, one in the front and the other in the rear. In the 100 –110° heat

of the SW, we normally see inside temps of 70° – 72°.

Electrical:

The coach was designed for the 125/250 Volt service. This service is split into two 125-

volt busses in the AC distribution box. The Generator feed both buses when in operation.

The Heart Interface Freedom 25, a 2500-watt inverter/charger feeds buss One which

services the primary or critical circuits. None-critical circuits are serviced by buss Two.

The Generator is a Wrico 8 KW diesel, powered with a Kubota Engine with currently

1605 hours of operation. According to Wrico, it should be good for over 30,000 hours. It

is housed in a sound deadened compartment and has its own starting battery so that it will

still start even if the house and chassis batteries are dead.

A Link 2000R Monitor/Controller controls the Heart Interface Freedom 25

Inverter/Charger. This system provides much information about the status of the house

batteries and the charge system including the percentage of charge, time remaining,

temperature of batteries, etc. The Link 2000R/Freedom 25 provide three stage charging

plus an Equalization stage. Unique to the Link 2000R is the addition of a voltage

regulator that converts the alternator to a three stage charger as well. This system

provides a greater usable charge to the batteries as well as increasing battery life.

The house battery system consists of four Trojan L-16HC 395 amp-hour, 6-volt batteries

connected in series-parallel to provide 12 volt DC power. These batteries have

temperature sensing connected to the Link 2000R Monitor/Controller. The batteries are

located on a slide-out tray.

The chassis or engine batteries are two Group 31 batteries mounted on a slide-out located

just forward of the radiator in the old A/C compressor compartment. This provides a

short run to the starter with 4/0 welding cable. We have never had any problem starting

even in sub-freezing weather. The two battery systems are tied together by an 850-amp

solenoid for charging whenever the alternator is on line.

Also located in the house battery compartment are the AC & DC distribution boxes. Both

are Square D, which gives you a common circuit breaker system. Square D rates their

circuit breakers down to 12 volt DC. The 65 foot ground power cord is also located in

that compartment.

The forward baggage compartment is for storage and contains a 5-drawer toolbox

mounted on a slide out. By the way, I also have the Stainless Steel hinges for all doors –

not all have been installed as the rubber is still good. I also have new rubber (the good

stuff) in the spares kit.

R & M Fiberglass caps have been installed on both front and rear. The Engine Door has

also been replaced with an R & M door. The modern rectangular four-headlight system

has also been installed. A deflector is installed on the rear top directing air down onto the

rear of the coach. This minimizes the vacuum reducing the road grime that accumulates

on the rear of the coach.

The coach has Ramco remote controlled and heated mirrors. There is a large flat plate

mirror and a convex (wide angle) mirror on each side. Each of the four mirrors can be

controlled individually.

On top, there is a remote controlled spot/flood light. Control is mounted on the electrical

panel above the driver. There are also “docking lights” on each side of the coach

individually controlled by switches on the driver’s center panel.

Four 75-watt solar panels are mounted toward the rear of the roof. A Winegard batwing

TV antenna and a BestMade Satellite dish are also mounted on top.

Interior:

All cabinets are made from solid red oak, stained to a light honey oak color and sealed

with multiple coats of Varithane. Cabinet doors have a rattan or caning material covering.

The walls and ceiling were gutted to the outside skin and 1 ½” thermax foam was

installed and then covered with ¼” plywood. Walls are covered with a light gray padded,

tuck and roll vinyl. The ceiling is white Naugahyde over ½” foam rubber. Ceiling seams

are covered with oak trim.

From the rear: Bedroom:

Standard full size, island, double bed. Under the bed are four large drawers on each side.

Cabinets are overhead and on each side of the head of the bed. Each nightstand contains a

storage compartment. The front wall of the bedroom is made up of two closets, each of

which is 30” wide by 20” deep. Located in one of the closets is the rear A/C evaporator

that is ducted to provide cooling to both the bedroom and the bath.

The side aisle Bath is located right in front of the closets. It is approximately 5’ by 5’.

The Stool is a Sealand Ceramic bowl toilet. The Shower has a 34” Neo-angle pan with a

ceramic tile surround and custom made tempered glass enclosure. Counter top is also

ceramic tile. There is a Fantastic Vent with thermostat and rain sensor.

The floor of the bath, hall, and galley are Oak plank hardwood. This hardwood has the

impregnated finish throughout. The floor of the bedroom and the living room has Berber

carpet stretched over ½“ 6 lb. rebond pad.

Along the passenger side of the hallway are cabinets including a linen closet and a can

pantry. The quantity monitor panel, made by Larsen Electronics, is located at the top of

these cabinets. It uses capacitance sensors that do not have the traditional problems of the

other types that clog easily.

Forward of the hallway on the passenger side is a pair of large pantries. Next is the

Norcold 8 cubic foot electric refrigerator. There are storage compartments both above

and below the refrigerator. In front of the refrigerator is a small cabinet with two large

drawers. Over that cabinet is the front A/C evaporator that cools the galley and living

room. Hanging from the A/C is a holder for wine glasses. Built into the lower cabinet is

a wine rack for six bottles.

On the driver side, forward of the bath, is the galley area. Hanging on the wall of the bath

is a GE Spacemaker Convection Microwave plus a couple of smaller cabinets. Overhead

cabinets are above the counter along the driver side of the galley. Under the

Convection/Microwave is the two burner JennAir Cooktop. The galley is “L” shaped and

the large Kohler “Entertainer Series” sink is located at the front end of the tile counter.

The kitchen faucet has the retractable combination spray head made by Delta. Total

counter space is approximately 8 feet long. A built in Nutone blender is located in the

counter. A cutting board slides out under the counter adding to available space.

A duplex electrical outlet is located overhead the counter next to the microwave and

another is on the front of the counter providing plenty of room to plug in accessories.

There are also a duplex outlet on each side of the bed and one in the bathroom cabinet.

These are GCFI protected. Two more AC duplex outlets are located nearer to the front of

the living room, one on each side of the coach.

The living room consists of a sofa bed on the driver’s side with a stand/cabinet between

the driver’s seat and the sofa. Overhead the cabinet is the TV/Satellite/VCR. On the

passenger side are two reclining/swivel/rockers on each side of a proprietary slide out

table. The table has two leaves that extend it out to the sofa. We have had as many as six

adults around the table at once. The table is made of solid oak with the slides made from

rock maple. The front chair is mounted on an eccentric that allows it to be moved fore

and aft by as much as 12”. Moved to the front, it becomes the passenger/navigator chair.

All windows are covered with aluminum mini-blinds, custom made to fit. Above the

front two windows are two six-foot fluorescent lights that operate with 12-volt DC

ballast. There are cabinets overhead the passenger seat, entry door, and across the front.

Above the Driver’s seat is the electrical monitor panel containing the Link 2000R,

Generator controls and gauges, spotlight control, and meters for monitoring AC power.

The old instrument panel was completely gutted and a new panel constructed. The

instrument panel contains complete instrumentation. The side panel was also rebuilt. It

contains the start switch, master switch, Stone-Bennett control for the transmission,

Cruise control, Controls for the mirrors, Exhaust brake and propane master switches. The

side panel contains controls for all functions and is laid out to be easily utilized while

underway. A new center panel was constructed that contains the rear CCTV and switches

for various functions. The center cabinet also contains the Cobra 40 channel CB along

with a 250-watt linear amplifier; The Sony control head for the am/fm radio, cassette tape

player, ten-disc changer, and television tuner. All are controllable with a remote. These

all feed audio into a 40-watt/channel amplifier that feeds a Bose speaker system.

There is also a radar and laser detector as well as a highway patrol “CHIPS Detector”

scanner. Individually controlled fans for the driver and passenger are installed. Rosen

sun visors are installed. These are unique in that they are moveable to almost any position

as needed.

The El Camino is a 1986 that we have owned since new. It has approximately 66,000

showing on the odometer. The cargo compartment has a custom, lockable, fiberglass

cover. It is equipped with a Roadmaster towbar and Brakemaster braking system. We

have been towing it since we completed the coach. It tows like a dream. We just put new

tires on it and had the front end aligned with all necessary parts replaced.

Also included in the package is the original engine that was removed, DD 8V71 complete

with all accessories, including an Allison VS2 – 6 automatic, all mounted on the original

cradle. If needed, it can be re-installed or it can be sold to another busnut. It is complete

with the radiator and drive shaft.

There are some other spare parts that will also be included.

I think I have included everything but there is probably more that does not come to mind

at this time.

 Email George or Ellen here....  wwemu@cwnet.com

Link to more pictures... http://users.cwnet.com/wwemu

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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                                              This page was last updated 12/16/03                                                  Copyright © 2000 All rights reserved.