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The Dieselfication of Coach 1046
Author: BigRabbitMan (Show all albums)

This album is dedicated to following the process of Coach #1046 being converted from a 1976 Chrysler 440-I with a 4spd Allison AT540 transmission to a 2006 GMC Duramax LBZ turbo diesel with a 6spd Allison 1000 double overdrive transmission. There is a companion discussion thread in the Mechanic's Corner section of the Forum area of this site.
Show Newest Photos First | Show Oldest Photos First379 Photos - Page : [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24] [25] [26] [27] [28] [29] [30] [31] [32]


The tank is loaded and ready to be transported to a metal fabrication shop where a new replacement tank will be built. This tank was slightly damaged by a loose tire tread a number of years ago so now is the time to replace it.

Here is where the fuel pickup assembly was installed into the tank. The tank can be removed with the pickup assembly intact, but one will have to be careful with the fuel lines, sender electical wire and the ground wire.

And here is the tank! The tank is 20.5 inches tall/deep so it will not just slide out from under the coach (FMC's are low to the ground!). Even with the coach on jack stands, we still had to remove the rivets holding the fiberglass side panel and bend it out of the way to slip the tank out - just barely!!

A floor jack was slipped under the tank to accept the weight and the remaining bolts were removed. Then the tank was wiggled and jiggled and lowered as low as the jack would allow.


That done it was back out and under the coach to start the tank removal process. Here Larry is loosening the four bolts that hold the tank up. We then removed two of them diagonally to prepare for lowering the tank.

..... it is out! Note that normally on a three tube assembly there would be a long tube for engine fuel, a slightly shorter one for the generator and then a very short one for the vapor recovery system. My third one is also long and turned at the end because I was running an Edelbrock fuel injection system that required a third tube for fuel to return to the tank.

Coming, coming, coming and .....

The hold down bolts and sender power wire and the ground wire have been removed and Larry Enoksen, coach #968, is carefully removing the fuel pickup assembly. Be careful as the float for the gauge sticks out sideways and must be manuvered through the small hole.


The lines on my coach had hardened to the point that we had to slice the hoses lengthwise to get them to release.

Depending on what smog rules were in effect when a given coach was built, it may have the three lines as shown here or, if prior to the need for a vapor recovery system, only two. If two, one is fuel for the engine and one fuel for the generator. If three, the third one is for the vapor recovery system.

Now we can look down and see the fuel sender/pickup assembly. The first step is to remove the electrical line to the gauge sending unit.

With the cover removed, we see the metal cover for the access hole.
Show Newest Photos First | Show Oldest Photos First379 Photos - Page : [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24] [25] [26] [27] [28] [29] [30] [31] [32]

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