Cat D4D 88A series (as 78A) hydraulic group

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Richard~J~W

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The hydraulic group on my D4D has an I.D. tag of 54G843.......does anyone know which model it is?
Also what kind of hydraulic pressure and flow does it have.......it only runs the blade up/down, no other services fitted

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Sat, Oct 14, 2023 2:44 AM

Rome K/G

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That would be a model 161 hyd control.

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Sat, Oct 14, 2023 5:07 AM

bluox

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Reply to Rome K/G:

That would be a model 161 hyd control.

If it has 1 valve it is a 141 ,or a 143 hyd. control. Don't know where the serial number break is.
main relief valve is around 1700 psi.
Pump output depends on which pump you have.
Bob

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Sat, Oct 14, 2023 7:54 AM

juiceman

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Reply to bluox:

If it has 1 valve it is a 141 ,or a 143 hyd. control. Don't know where the serial number break is.
main relief valve is around 1700 psi.
Pump output depends on which pump you have.
Bob

141 single for D4, 142 two valves, and 143 triple valve. JM

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Sat, Oct 14, 2023 9:26 PM

Rome K/G

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Reply to juiceman:

141 single for D4, 142 two valves, and 143 triple valve. JM

54G shows up as a 161 unit.

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Sat, Oct 14, 2023 9:28 PM

juiceman

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Reply to Rome K/G:

54G shows up as a 161 unit.

[quote="Rome K/G post=251921 userid=1654"]54G shows up as a 161 unit.
***Not doubting you Rome: Sounds like someone swapped units on him. I have never looked in the bible to see what differences there are between all of those units, they all look the same to me. I should take notes of each tractor I have here and record the serial numbers for the chassis, engine, pump and blade for future reference. JM
[/quote]

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Sat, Oct 14, 2023 10:17 PM

bluox

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Reply to juiceman:

141 single for D4, 142 two valves, and 143 triple valve. JM

A 141 or 143 hyd. control can be a 1 2 or 3 valve no such thing as a 142 .
Bob

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Sun, Oct 15, 2023 1:02 AM

bluox

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Reply to Rome K/G:

54G shows up as a 161 unit.

[quote]54G shows up as a 161 unit.[/quote]
A 54G hyd control can be a 141,143 151 or a 161.
A 161 would be on a D 6 tractor.
Bob

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Sun, Oct 15, 2023 1:06 AM

juiceman

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Reply to bluox:

[quote]54G shows up as a 161 unit.[/quote]
A 54G hyd control can be a 141,143 151 or a 161.
A 161 would be on a D 6 tractor.
Bob

Time for me to hit the books, that is, where I put them last! Thx. JM

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Sun, Oct 15, 2023 2:05 AM

bruce oz

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Reply to juiceman:

Time for me to hit the books, that is, where I put them last! Thx. JM

https://www.acmoc.org/bb/discussion-d72/5065-d4d-rehab-project?start=70#39314

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Sun, Oct 15, 2023 2:35 AM

Rome K/G

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Reply to bluox:

[quote]54G shows up as a 161 unit.[/quote]
A 54G hyd control can be a 141,143 151 or a 161.
A 161 would be on a D 6 tractor.
Bob

[quote="bluox post=251925 userid=2232"]
[quote]54G shows up as a 161 unit.
A 54G hyd control can be a 141,143 151 or a 161.
A 161 would be on a D 6 tractor.
Bob
Correct, the 54G's were made in the UK.[/quote]
[/quote]

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Sun, Oct 15, 2023 2:41 AM

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