John Deere Model 40 Tractor
Detailed Torque Specifications (ft.-lbs.)

ENGINE

Spark Plugs

30

 

Cylinder Head Cap Screws

90

 

Connecting Rod Bolts

58

 

Main Bearing Cap Screws

145

 

Flywheel Cap Screws

73

 

Rocker Arm Braclet Nut

28

 

TRANSMISSION-DIFFERENTIAL

Transmission to Center Frame Cap Screw

175

 

Transmission to Center Frame Stud Nuts

100

 

Transmission to Final Drive Stud Nuts

100

 

Transmission to Steering Clutch Housing Stud Nuts

100

 

Ring Gear Attaching Cap Screws

38

 

Output Shaft Cast. Nut

100

 

FINAL DRIVE

Axle Shaft Inner Bearing Retaining Cap Screws

75

2

185

1

Axle Shaft Inner Bearing Cover Cap Screw

24

 

43

7

Final Drive Shaft Bearing Quill Attaching Cap Screws

22

 

Axle Outer Bearing Quill Attaching Cap Screws

24

 

Final Drive Oil Pan Attaching Cap Screws

22

 

24

5

Brake Assembly to Final Drive Attaching Screws

40

 

Planter Drive Shaft Attaching Cap Screw

185

1

75

2

Final Drive Housing to Transmission Case Cap Screws

100

 

Drawbar Trunnion Nut

300

 

WHEELS

Web or Hub Attaching Nut

1000

 

Rim Attaching Nut

105

 

Rear Wheel Hub to Cap Nuts

150

 

Front Wheel Bearing Adjusting Nut

38

6

Lower Spindle and Spacer to Upper Spindle

147

4

180

3

Rim to Hub Cap Screws

105

 

FRONT END SUPPORT

Front End Support to Cylinder Block Cap Screw

87

 

Pivot Shaft Set Screw and Jam Nut

48

 

Front End Support to Pivot Shaft

48

 

STEERING MECHANISMS

Steering Tube Socket Head Cap Screw

15

 

Steering Arm to Verticle Spindle Cap Screw

63

 

Steering Clutch Pressure Plate to Driven Disk

16

 

Steering Clutch Housing to Side Frame

105

 

AXLES

Axle Center Cross Member to Axle Adjustable End Cap Bolts

180

 

TRACK CARRIER ASSEMBLY

Track Shoe Bolts

185

 

Idler Bracket Cap Screws

185

 

Cross Member-to-Track Carrier Cap Screws

185

8

205

9

Idler Bracket to Shaft Attaching Nut

150

 

Roller Bracket to Shaft Attaching Nut

150

 

Front Idler and Roller Thrust Plate Attaching Socket Head Cap Screws

25

 

Upper Support Idler Thrust Plate Attaching Socket Head Cap Screws

25

 

Rock Guard Spacer Bolts

120

 

Roller and Bracket Assembly to Frame

58

 

HYDRAULIC SYSTEMS AND THREE-POINT HITCH

Rockshaft Housing to Cylinder and Valve Housing, 7/16 inch

40

 

Rockshaft Housing to Cylinder and Valve Housing, 1/2 inch

60

 

Rockshaft Housing to Cylinder and Valve Housing, 9/16 inch

85

 

Rockshaft Housing and Cylinder Valve Housing to Transmission Case Cap Screws

60

 

Leveling Crank Gear Thrust Screw

20

 

Control Valve Cover and Housing to Control Valve Base

15

 

Hydraulic Pump to Cylinder Block Skt. Hd. Cap Screws

26

 

Power Lift Pump Cover to Center and Base Cap Screws

26

 

Cylinder and Valve Housing to Power Lift Support Screws

60

 

NOTES

1

Applies to all Tricycle Type and all 5/8-inch cap screws

2

Applies to all 1/2-inch cap screws

3

Applies to 5:00 x 15 and 5:50 x 15 tires

4

Applies to 6:00 x 16 tires

5

Applies to Tricycle Type

6

Tighten to 38 ft.-lbs. and back off to nearest castellation

7

Applies to Crawler and Hi-Crop

8

Below Serial No. 40C-66374

9

After Serial No. 40C-66375