HYDRAULIC PUMP DRIVE SHAFT FOR JOHN DEERE L42187

The L42187 hydraulic pump drive shaft is a drivetrain component designed for John Deere 50 Series tractors. It is used to drive the hydraulic pump and is selected primarily based on its part number, machine application, and length of 250 mm. This part is suitable for specific models, with certain variations depending on the country or the tractor’s configuration.

Role of the Drive Shaft in the Hydraulic System

A drive shaft mechanically connects the power source to the hydraulic pump to transmit the motion necessary for its operation. In this context, it is not enough to rely solely on the term “drive shaft”: the exact compatibility with the specific pump and tractor remains crucial.

This part is generally sought as a replacement following wear, abnormal play, or damage to the installed component. When the hydraulic pump drive is involved, verifying the part number and known dimensions prevents the removal of an adjacent part that is not identical.

Useful guidelines for identifying part number L42187

The first identifying feature is the part number L42187. The second is the length of 250 mm, which helps distinguish this shaft from other similar assemblies. These two pieces of information must be cross-referenced with the exact tractor model, as a single machine family may include several variants.

This is an important point for the John Deere applications mentioned here, where certain part numbers include version or country suffixes. If you are working on a 3150 or a 3350, note the complete model name before comparing the part. This precaution helps avoid confusion between similar part numbers intended for different configurations.

John Deere Applications Covered

This shaft is listed for John Deere 50 Series tractors. Among the listed applications are models 3050, 3150, 3350, and 3650, with several distinct variants depending on the market or version. Compatibility must therefore be verified based on the full model number, not just the series.

If your tractor belongs to this family, the surest way to identify it is to compare the part number of the removed part with the exact model designation of the machine. There is one important caveat to keep in mind: a common series designation never replaces verifying the specific model.

Choose Carefully Before Replacing

Before ordering, check the part number on your old part—if it’s still legible—as well as the specified effective length. For this type of hydraulic pump shaft, these practical reference points are most useful when tractors have similar variants.

If in doubt, use your John Deere’s exact model and part number L42187 to confirm proper fit. This is the simplest way to select a compatible part for your specific application.

Dimensions and Technical Specifications

• LENGTH 250 MM

Compatibility by Brand and Series

JOHN DEERE · 50 Series

• 3050
• 3150 (ES)
• 3150 (USA)
• 3350 (DE)
• 3350 (ES-6359D)
• 3350 (ES-6359T)
• 3650

FAQ — Frequently Asked Questions

What is the purpose of a hydraulic pump drive shaft on a tractor?

A hydraulic pump drive shaft transmits mechanical motion to the pump to ensure its operation. When selecting this type of part, the correct choice depends primarily on the part number, length, and exact application for the tractor, as a similar part number is not sufficient to guarantee a proper fit.

How can I check if part number L42187 is compatible with my John Deere?

You should verify using part number L42187, a length of 250 mm, and the exact tractor model designation. This is particularly important for models with country-specific or version variations, such as certain 3150 and 3350 models, where the full model name is essential to avoid mistakes.

Is the 250 mm length important when choosing this drive shaft?

Yes, the 250 mm length is a key selection criterion. It must be verified along with the part number and machine application, as a drive shaft intended for the same purpose but with a different length may not be suitable for driving the hydraulic pump in question.

Is this part compatible with all John Deere 50 Series models?

No, it is not listed for the entire 50 Series without distinction. It is compatible only with the models and variants explicitly associated with this part number, including several versions of the 3050, 3150, 3350, and 3650. You must therefore verify the exact model before ordering.

Original replacement part numbers and brand names are provided for comparison purposes only. This does not imply that these are original parts.