CAT D6M-LGP SystemOne to Conventional Conversion Undercarriage Parts
CAT D6M-LGP Undercarriage Parts
For SystemOne to Conventional Conversions
Shop D6M LGP undercarriage parts for Caterpillar D6M-LGP dozers equipped with a SystemOne undercarriage converting to a conventional track setup. This D6M LGP System One conversion guide covers the serial number ranges below and helps identify the major components commonly replaced during a complete conversion or undercarriage rebuild.
Order normally. After ordering, provide your machine serial number through our Exact Fit Guarantee process and our team will verify compatibility before shipment.
➜ Ready to shop? Review the guide below, then browse the product listings below for available D6M-LGP undercarriage parts, pricing, and current availability.
CAT D6M-LGP Serial Prefix Guide
This guide covers the following Caterpillar D6M-LGP serial prefixes:
All components listed below are required to complete the SystemOne to Conventional conversion on a Caterpillar D6M-LGP. These are the same conventional undercarriage parts used on D6M-LGP machines that shipped with conventional track from the factory.
In addition to the major undercarriage components shown above, we may also offer mounting hardware, track hardware, idler hardware, track tensioning components, track guiding guards, seals, and related undercarriage parts.
Track Shoe Options: D6M-LGP track shoes are available in Single Grouser (24", 28", 30", 34") options depending on application.
➜ Ready to order? Browse the product listings below to view available Caterpillar D6M-LGP track chains, track shoes, rollers, idlers, sprockets, track tensioning components, hardware, pricing, and current availability.
What To Inspect During an Undercarriage Rebuild
Replacing Track Chains? Inspect track shoes, sprockets, rollers, and idlers.
Replacing Bottom Rollers? Inspect carrier rollers, idlers, and chain wear.
Replacing Idlers? Inspect recoil spring and track tensioning components.
Commonly Purchased Together
Replacing Track Chains?
Customers commonly inspect or replace:
Track shoes
Sprockets
Track hardware
Replacing Bottom Rollers?
Customers commonly inspect or replace:
Top carrier rollers
Front idlers
Track chain wear
Planning a Complete Undercarriage Rebuild?
A typical rebuild may include:
• Track chains
• Track shoes
• Bottom rollers
• Front idlers
• Carrier rollers
• Sprockets
Exact Fit Guarantee
Order with confidence. After placing your order, provide your machine serial number through our Exact Fit Guarantee process and our team will verify fitment before shipment. If a fitment issue is identified before shipment, we will work with you to ensure the correct parts are supplied.
Are these aftermarket conversion parts compatible with my CAT D6M-LGP SystemOne undercarriage?
Yes. The aftermarket CAT D6M-LGP SystemOne to conventional conversion parts offered by Propel Parts are engineered as direct replacement components and are designed to meet or exceed OEM specifications for fit, function, and performance. This guide covers D6M-LGP machines with serial prefixes 2RN, 4GS, 4JN, and 5NR. If you are unsure, provide your serial number and our team will verify fitment before shipment.
Do I need to provide my serial number before ordering CAT D6M-LGP conversion parts?
No, you can place your order normally. After ordering, simply provide your machine serial number through our Exact Fit Guarantee process. Our team will verify compatibility before shipment to ensure the correct parts are supplied. This guide covers Caterpillar D6M-LGP machines with serial prefixes 2RN, 4GS, 4JN, and 5NR converting from SystemOne to conventional undercarriage.
What is a SystemOne to conventional conversion for the CAT D6M-LGP?
A SystemOne to conventional conversion replaces the sealed, lubricated SystemOne undercarriage with a standard conventional track setup. This conversion requires replacing all mating undercarriage components simultaneously, including the track chain, track shoes, lower rollers, top carrier rollers, idlers, sprocket segments, and recoil springs. Partial replacement is not recommended as SystemOne and conventional components are not interchangeable.
What is included in a complete CAT D6M-LGP SystemOne to conventional conversion?
A complete CAT D6M-LGP SystemOne to conventional conversion requires 2 conventional track chains, 90 track shoes per side, lower rollers (quantity varies by position), 2 top carrier rollers per side, 2 idler assemblies, 2 sprocket segment groups, and 2 recoil springs. All components must be replaced at the same time since SystemOne and conventional parts are not interchangeable.
What track shoe options are available for the CAT D6M-LGP conventional conversion?
After converting your D6M-LGP from SystemOne to conventional track, shoes are available in Single Grouser widths of 24", 28", 30", and 34". A 34" mud hole (W/MH) variant is also available. The right choice depends on your ground conditions and application requirements.
Can I replace only part of the SystemOne undercarriage on my CAT D6M-LGP?
No. SystemOne and conventional undercarriage components are not interchangeable. A full conversion requires replacing all mating components simultaneously — track chain, shoes, rollers, idlers, and sprocket segments. Attempting a partial replacement will result in incompatible components and accelerated wear.
What are the track specifications for the CAT D6M-LGP after a conventional conversion?
After converting your CAT D6M-LGP to conventional track, the specifications are: Pitch 7.50", Bolt Diameter 3/4", Link Height 119mm, and Bushing Outside Diameter (O.D.) 65.0mm. These are the same specifications as D6M-LGP machines that originally shipped with conventional track.
Are track bolts and nuts included with CAT D6M-LGP conventional conversion track shoes?
Track hardware is typically sold separately. When installing track shoes as part of a D6M-LGP SystemOne to conventional conversion, you will need the appropriate track bolts and nuts for your chosen shoe width. It is recommended to use new hardware throughout the conversion.
What parts do I need for a complete CAT D6M-LGP SystemOne to conventional conversion?
If you're doing a complete undercarriage replacement on a Caterpillar D6M-LGP with conventional track, here's a full parts reference based on standard machine configuration:
Main Undercarriage Components
Component
Qty per Machine
Track Chain — HD TLA SALT (46L)
2 (1 per side)
Track Shoes (24", 28", 30", or 34" Single Grouser)
90 per side
Lower Roller — Single Flange
Varies per side
Lower Roller — Double Flange
Varies per side
Top Carrier Roller
2 per side
Front & Rear Idler
2 total (1 per side)
Sprocket Segment Group
2 (1 per side)
Recoil Spring
2 (1 per side)
What happens if I order the wrong CAT D6M-LGP conversion part?
Our Exact Fit Guarantee is designed to prevent ordering errors. After placing your order, provide your machine serial number and our team will verify compatibility before shipping. If a fitment issue is identified, we will work with you to ensure the correct replacement parts are supplied for your CAT D6M-LGP SystemOne to conventional conversion.
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