I just stopped at AutoZone and they've changed up the transmission fluid they stock. Up until 2 weeks ago, they stocked Dexron-IIe. Now, they've rearranged everything and the oldest type oil they keep is Dexron-III compatible "universal" oil.
That made me think. Possibly the wrong oil had been put in, because the seals are rock hard and split like so much cheap plastic, and the only bearings that are bad are the phosphor bronze ones in the hubs.
That would explain why it wore to such extremes.
Phil
1951 Pontiac Chieftain
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PhilA
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Re: 1951 Pontiac Chieftain
That makes a lot of sense.
Would it have originally used Type A fluid?
I know that there is no perfect match modern transmission fluid for Type A
(can't get the sperm whales you know!
)
so what is the nearest equivalent that is widely available?
Would it have originally used Type A fluid?
I know that there is no perfect match modern transmission fluid for Type A
(can't get the sperm whales you know!
)so what is the nearest equivalent that is widely available?
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Re: 1951 Pontiac Chieftain
'They' say you can use the universal one.
Supply Chain Disruption
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1957 DKW 3=6 Sonderklasse
1967 Renault 16 GL
1983 Renault 4 TL
2001 Mercedes E240
2002 Datsun Dice
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PhilA
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Re: 1951 Pontiac Chieftain
I am going to speak also to the transmission place and see what they use when they're rebuilding these gearboxes.
Phil
Phil
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PhilA
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Re: 1951 Pontiac Chieftain
Cleaned out the governor. The B weight would get a little sticky in the bottom of the bore; a thorough cleaning has resolved that and now sees both weights falling freely under their own weight when the governor shaft is rotated.
That'll certainly have been a not-changing-gear issue.
Phil
That'll certainly have been a not-changing-gear issue.
Phil
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Re: 1951 Pontiac Chieftain
The valve block is in two pieces. The top piece was all full of crap. Cleaning that up sorted the valves in it up.
The lower part has the ones that move a lot with engine speed any throttle position.
Those are getting a bit stuck, so I need to inspect the bores and valves for burrs and scoring.
Phil
The lower part has the ones that move a lot with engine speed any throttle position.
Those are getting a bit stuck, so I need to inspect the bores and valves for burrs and scoring.
Phil
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Re: 1951 Pontiac Chieftain
- 20190810_200214.jpg (3.44 MiB) Viewed 4068 times
What a lot of work. 44 individual pieces in that damn thing.
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Re: 1951 Pontiac Chieftain
I do like seeing gearboxes striped, I've never had an auto in bits but have taken apart manuals before, I've bought bikes very cheap before as the gearbox has come as a box of loose gears, oddly I find them quite simple to put back together, the hardest part is shimming then correctly if they are missing or wrong.