Z48 CAMSHAFT SPROCKET FOR JOHN DEERE T20070

The Z48 camshaft sprocket (part number T20070) is installed in the engine timing system of many John Deere tractors. With its 48 teeth, it helps maintain the timing between the crankshaft and the camshaft, which is essential for valve control. This part number is used on models in the 10, 20, 30, 35, 40, 45, 50, 55, 6000, and 7000 series.

A Key Component of the Timing System

The camshaft sprocket transmits motion to the camshaft and maintains the intended rotational relationship with the rest of the timing system. This synchronization ensures that the valves open and close at the correct point in the engine cycle. When the teeth become loose or worn, timing can become less precise and disrupt the engine’s smooth operation.

A properly timed valve train contributes to normal starting and smooth operation. Conversely, a worn or damaged sprocket can accelerate wear on other components of the valve train if it is not replaced in a timely manner.

For this type of part, the number of teeth is one of the key criteria. Here, the designation Z48 indicates a 48-tooth sprocket; this must be verified before placing an order.

Identification marks for part number T20070

This part corresponds to part number T20070. It is specified as a camshaft sprocket for installation in an engine’s timing system. The source text states that it is made of heat-treated steel, suitable for the mechanical environment of this timing gear train.

• Type: camshaft sprocket
• PartNumber: T20070
• Teeth: 48
• Installation: engine timing system

The complete list of John Deere applications follows this description. It includes tractors from the 10 to 7000 series, with their suffix variants where specified.

When to replace this sprocket

Replacement should be considered, in particular, if there isvisible wear on the teeth, abnormal noise in the timing system, irregular operation, loss of power, or starting difficulties. These are signs that warrant a thorough inspection of the entire timing system.

This sprocket is also frequently replaced during an engine overhaul, when the timing system has already been removed. In this context, it is helpful to inspect the associated sprockets, shafts, bearings, and drive components specified for your assembly at the same time.

Check Carefully Before Ordering

To select the correct part, first enter the part number T20070 and the tooth count Z48. Then verify that your exact model is listed in the application list. The same tractor model name may correspond to different mounting configurations depending on the version, country, or engine updates.

If you are working on a timing system that has already been opened, carefully compare the old sprocket and refer to the procedure specified for your tractor. To finalize your selection, verify that the part number and machine application listed on the data sheet match.

Compatibility by Brand and Series

John Deere · 10 Series

• 2510
• 510
• 710

John Deere · 20 Series

• 820
• 920
• 1020
• 1120
• 1520
• 2020
• 2120
• 2520
• 3120

John Deere · 30 Series

• 830
• 930
• 1030
• 1130
• 1530
• 4:30 p.m.
• 6:30 PM
• 8:30 PM
• 9:30 PM
• 2,630
• 3030
• 3130
• 4030

John Deere · 35 Series

• 1035
• 1635
• 2035
• 2135
• 3135

John Deere · 40 Series

• 840
• 940
• 1040
• 1640
• 1840
• 2,040
• 2140
• 2240
• 2440
• 2640
• 2840
• 2940
• 3,040
• 3,140
• 3,340
• 3640
• 3640S
• 4040
• 4040S

John Deere · 45 Series

• 1445F
• 1745F
• 1845F
• 2345F

John Deere · 50 Series

• 1350
• 1550
• 1750
• 1850
• 1950
• 2,150
• 2,250
• 2350
• 2450
• 2,550
• 2,650
• 2750
• 2,850
• 2,950
• 3,050
• 3,150
• 3,350
• 3,650
• 4,050

John Deere · 55 Series

• 2155
• 2255
• 2355
• 2555
• 2855N
• 2955
• 3055
• 3155
• 3255

John Deere · 6000 Series

• 6100
• 6100SE
• 6200
• 6200L
• 6200SE
• 6300
• 6300L
• 6300SE
• 6400
• 6400L
• 6400SE
• 6500
• 6500L
• 6506
• 6600
• 6800
• 6900

John Deere · 7000 Series

• 7200
• 7400
• 7500
• 7600

FAQ — Frequently Asked Questions

What is the T20070 camshaft sprocket used for?

It is used to transmit motion from the timing mechanism to the camshaft to maintain proper valve timing. For this part number, the Z48 tooth count is a key identifier, as the number of teeth determines compatibility with the specific engine assembly.

How can you identify this part number before ordering?

Identification is based primarily on the part number T20070 and the 48-tooth configuration. You should also verify that your tractor is listed in the application list and compare it to the old sprocket if the timing system has already been opened, to avoid confusion with another installation variant.

Is this pinion listed for the John Deere 2140, 2650, and 6400?

Yes, the 2140, 2650, and 6400 models are indeed listed in the application list associated with this part number. However, please check the part number installed on your tractor or your machine’s documentation, as the same model family may have multiple configurations depending on the version.

When should this timing gear be replaced?

It should be replaced in the event of visible wear on the teeth, abnormal noise in the timing system, irregular operation, loss of power, or during an engine overhaul. When the timing system is removed, inspecting the associated sprockets and control components ensures that the system is restored to a consistent, fully functional state.

The original replacement part numbers and brands are provided for comparison purposes only. This does not imply that these are original parts.