Vintage Tractor Engineer

May 30th, 2007

Massey Ferguson 35 23C Data Specifications and Torques

Here are the data, specifications, dimensions, tolerances and the main tightening torque settings for the 4 cylinder Standard 23C engine as fitted to the MF35. These specifications accompany the MF35 Engine Rebuild DVD, which details every aspect of rebuilding the 4 cylinder Standard Motor Company 23C diesel engine as fitted to these tractors.

Data Specifications

Cylinders 4
Bore 3 5/16”
Stroke 4”
Displacement 137.89 cu ins.
Compression Ratio 20:1
Firing Order 1,3,4,2
Power 37.25 bhp
Belt Power 35.9 bhp
Crankshaft Torque 100 lb.ft at 1600 rpm

Read the rest of this entry »

May 23rd, 2007

Fordson Dexta Serial Numbers

Finding the year of manufacture for a Dexta is a complex process and sources of information differ. The serial number of the Fordson Dexta is stamped on the flange between the engine and clutch housing on the left hand side of the tractor. The castings codes (clutch casting, rear axle casting, gearbox casting, hydraulic lift casting) can also give an indication of year of manufacture. Fordsonfreeweb and Yesterdaystractors give information on this - and here’s a summary of that info.  Other Dexta statistics are available here.

Casting Codes

From 1957 until 1963, the casting codes would be in the format of C17A (for example). The first letter refers to the month (i.e. C refers to March), the number refers to the date (i.e.17 would be the 17th of March in this case), the last letter refers to the year (A refering to 1957).

From 1963 onwards the code consisted of a year number, letter indicating the month and a number for the date. So 4D18 would be the 18th April 1964. It would seem that there are some anomalies though - see the table below.

Month Until 1963 1963 and after
Jan A A
Feb B B
March C C
April D D
May F E
June H F
July J G
Aug K H
Sept L K
Oct M L
Nov N M
Dec P N
Year Code
1957 A
1958 B
1959 C
1960 D
1961 F
1962 H
1963 (Jan-May) J
1963 (Jun-Dec) 3
1964 4

Serial Numbers

Year Prefix Number
1957 957E 1 to..
1958 957E 144 to..
1959 957E 22558 to..
1960 957E 44432 to..
1961 (Jan-Oct) 957E 71921 to..
1961 (Nov-Dec) 09A 312001 to..
1962 09B 702592 to..
1963 (Jan) 09C 732031 to..
1963 (Feb-May) 09C 900001 to..
1963 (Jun-Dec) 09C 916550 to..
1964 (Jan-Sept) 09D 907332 to..

Other sources do differ slightly from the above numbers, so please only use these as a good guide.