[bollybib]

HVAC (6 OF 6)
Once I had the old blower out, I found the driveshaft was real wobbly so that’s what was causing all the racket I heard.

Then I installed a new blower motor and set the hinge back in place. Even with the difficult access, the job only takes a couple of hours or so.




PROBLEM 13: The two barbs on the vacuum reservoir have nothing connected to them.
SOLUTION: I installed a new vacuum supply hose from the reservoir to a spare port on an existing intake manifold tree. I connected a loose hose I found that supplies vacuum to the CU in the cab.


This little schematic in the Service Manual
is quite useful for checking out the vacuum controls.


PROBLEM 14: There are two unconnected vacuum hoses near the heater/AC housing.
SOLUTION: I connected one of them to the vacuum reservoir (Problem 13). I connected the other one to the water valve. I had to lengthen this hose with a new piece of hose and a connector because it wouldn’t reach.


PROBLEM 15: The water valve is missing
SOLUTION: I obtained and installed a new water valve

I left a lot of excess vacuum line coiled up for now.

PROBLEM 16: There is no port available on the intake manifold to connect the heater hose.
SOLUTION: I changed the location of the temperature sending unit from the intake manifold to the cylinder head (see TEMPERATURE SENDER REVISITED, below). I then installed a pipe nipple and connected the heater hose where the temperature sender used to be. I had to reroute the fuel line a little.




PROBLEM 17: I can’t seem to stop buying parts and fixing stuff on this truck.
SOLUTION: I’ll make everything perfect so it will never need another thing.


It took me a while to get there, but once everything was fixed and back in place and I set it to heat … Voila ! I got HEAT ! (I could say this is a very cool thing to have but that would be contradictory).

Brass el fitting…….....……….………$....8.69
Heater hose……………….......………..…10.63
Water valve……………….……….......….25.81
Outlets lever…………………….........……9.83
1895 lamps……………………….........……4.34
Blower motor, hoses, fittings……..…40.32
Hose fittings……………….…….......…….4.92
Spring for cowl door…………….....……1.67
Plastic epoxy…………………….......…….9.68
AC duct hoses………………….......……61.00

Total…………………........…………….$.176.89