Tractor & Construction Plant Wiki
Nuffield 4/65
Nuffield 4-65 - JCT 277F at Belvoir 08 - P5180426.jpg
Model history
Model introduced 1967
Model discontinued 1969
Model status Discontinued
No. produced Unknown
Preceded by Nuffield 10/60
Superseded by Leyland 384
Engine Specification
Engine make BMC
Engine model 38T/TA/TD
Fuel type Diesel
Power hp 65 hp (54 hp PTO)
Governed rpm {{{governedrpm}}}
Displacement cu in /(litre) 230 cu. in (3.8 litre)
No. of Cylinders 4
Bore in (mm) 3.937 inches (100 mm)
Stroke in (mm) 4.724 inches (120 mm)
Naturally aspirated, Turbo or Supercharged NA
Transmission Details
Transmission type 10 speed, Non Synchromesh
Clutch 11" dry Borg & Beck
Gearbox make BMC
Forward 5 x Hi/low
Reverse 1 x Hi/low
Drive 2-WD (4-WD Optional)
General Data
Linkage Category Category 2
Lift capacity (lb/kg) 3,600 lb
Tyre Sizes (std/options)
Front 6/7.5 x 16
Rear 11/12 x 36
12 x 38
14/15 x 30
Tractor Dimensions
Length (inches/metres) 10'6.5" (2,030 mm)
Width (inches/meters) 5'8" (1,720 mm)
Height (inches/meters) 7'2.75" (2,200 mm)
Weight (nominal) lb/kg 5,140 lb
Turning circle (nominal) inches/meters 7'32 (2,200 mm)
Other info
Factories Bathgate, Scotland
Plow rating Unknown
Nebraska Tests No. Unknown
Notes Replaced by 'New' Leyland Blue models, fitted with Leyland Engine, & new tinwork
This box: view · talk

The Nuffield 4/65 was built by Nuffield from 1967 to 1969 at the Bathgate factory.

Model History

For Company history see
Main article: Nuffield

The detailed history of this model is unknown. Can you help add more history for them

  • Skid unit used in the JCB 3C series backhoes.


  • Introduced in 1967 to replace the Nuffield 10/60, with a new twin range gearbox to give a 10F 2R range. Fitted with new rear mudgauards, and restyled Bonnet & nosecone with integral lights. The engine power was raised to 65 hp, and a bigger radiator fitted. The fuel tank was moved to the nose.
  • At first the 4/65 had quite a lot of problems. This included vibration issues, which caused many panels to rattle and shake and, in turn crack in severe cases. Nuffield eventually developed crankshaft balancers to alleviate the issue but it is unknown when they became standard.
  • Overheating was another common issue due to the positioning of the fuel tank, which restricted air flow, however, it was also due to farmers not cleaning out the side screens regularly.
  • The 4/65, if used for heavy tillage work, also tended to ‘eat’ clutches and if a problem ever arose with the original 11 inch unit, a 13 inch unit was usually fitted in its place.

Factory locations

Built at Bathgate, Scotland.


See Infobox above for main spec.

  • Plessey tandem hydraulic pump.
  • Hydraulic Controls changed to quadrant design.

Variations and Options

  • Bray offered a 4-wd version known as the Bray Four 4/65 of which only about 130 were built over a 3 year period.[1]
  • Power steering option offered (expensive) which included a ram inbuilt into the tractors front steering frame and a new Plessey Pump, driven off the timing case. Interestingly, the larger Massey Ferguson 100 series tractors like the 165 and 175 utilised the same system and even had a similar pump and ram, also built by Plessey.
  • Bostrum suspension seat
  • Single, Dual and Independent clutch options.

Serial Numbers Information

Serial Numbers and Year of Manufacture data[2]
Year Serial run Number Built Notes (Total built xyz).
1967 99001-? ? First built
1968 ? ?
1969 ? ?
1969 ? ? Last built No.
year serial no Number built Notes


New the tractor sold for ?

  • Poor ex farm machines - £750-£1000
  • Complete but tired ex farm - £ 1500
  • Good Original working example - £ 5000
  • Restored examples from - £5000


Add details about any of these tractors in preservation.
(you can create a separate page by linking using serial no. or reg no. to create a unique page for that tractor)

Do you know of any more examples to list below ?
List of Preserved Nuffield 4/65 tractors
view  talk  edit
Make + Model No. Reg No.
(if known)
Serial No. Build-Date Engine-Type/Make Owner
(if known)
Photo Were seen/Featured in Other info
Nuffield 4/65 AUP949F+ serial no date built engine owner Nuffield 4-65 (AUP949F) at NVTR 2012 IMG 3402.JPG At NVTR 2012
Please add any tractor with known reg or serial no. with Photo if possible.
Make & model reg no serial no date built engine owner 100px

set to 150px
seen at misc info
Create a page (link) for an individual tractor by linking the reg or serial number using reg number or serial number in the relevant column. Then once saved click the red link to start the new page and add info on that tractor.


See also

References / Sources

  1. Nuffield, Leyland and Marshall 1948-85, by Allan T. Condie ISBN 1-904686-11-7
  2. Nuffield Leyland & Marshall 1948-1985 by Allan T. Condie
  3. Tractor & Machinery Magazine, vol 14 no.10, page 17

External Links