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Old 05-10-21, 07:29
Lynn Eades's Avatar
Lynn Eades Lynn Eades is offline
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Default Help to I.D.

Hi. I wondered if anyone can positively identify a pitman arm for me. I think it might be CMP, but dont know.

I heard a comedian talking about abbreviations. On I.D., he thought it was stupid that "I" stood for "I" (der ) and "D" stood for "Dentification" (all the rest!)
Anyhow back to the drop arm (pitman arm)
The spline is the right size for a 3/4 ton WC Dodge. They used a Gemmer steering box. Gemmer made steering boxes for CMPs as well
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Carrier Armoured O.P. No1 Mk3 W. T84991
Carrier Bren No2.Mk.I. NewZealand Railways. NZR.6.
Dodge WC55. 37mm Gun Motor Carriage M6
Jeep Mb #135668
So many questions....

Last edited by Lynn Eades; 09-10-21 at 02:32.
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Old 08-10-21, 09:30
motto motto is offline
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The 3/4 ton drop arm is a one piece forging, the ball being integral with the arm.
This drop arm looks more like a Lend/Lease Chev item though the offset appears to be greater.
Can you give the centre to centre dimension and ball diameter. The spline diameter would also help along with the offset dimension.

David
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Old 09-10-21, 02:31
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Lynn Eades Lynn Eades is offline
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Hi David. I was not saying it was 3/4 ton Dodge, just that the spline is the same. The Dodge one has the ball on the opposite side and is a one piece forging. This one has a ball stud that is retained by a swage (similar to a rivet)
The offset (straight edge on the back) is approx. 105mm (center of ball to straight edge) The ball dia 0.980". Effective length (C to C) 6 7/8".
Also, it does have four equally spaced master splines, as per the 3/4 ton Dodge. Could it be M37?
On one side it has "1035 W W" and on the other "265469 M3" Chrysler? GM?
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Carrier Armoured O.P. No1 Mk3 W. T84991
Carrier Bren No2.Mk.I. NewZealand Railways. NZR.6.
Dodge WC55. 37mm Gun Motor Carriage M6
Jeep Mb #135668
So many questions....
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Old 10-10-21, 06:18
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Not L/L Chev, definitely not M37

David
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Old 11-10-21, 09:21
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Lynn

The pitman arm is for GMC 6x6 (CCKW)

David
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Old 11-10-21, 23:55
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Thankyou!, David. I knew someone would know!
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Carrier Armoured O.P. No1 Mk3 W. T84991
Carrier Bren No2.Mk.I. NewZealand Railways. NZR.6.
Dodge WC55. 37mm Gun Motor Carriage M6
Jeep Mb #135668
So many questions....
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