New C175 High Altitude Low Maintenance Ratio Engine for 797 Off-Highway Trucks {1000}
- Off-Highway Truck/Tractor
- 797F (S/N: LAJ1-UP)
Description Of Change: Cat® C175-20 Low Maintenance Ratio (LMR) engine for use in high altitude arrangement 797 Off-Highway Trucks. C175-20 LMR engines are designed to reduce maintenance cost and improve reliability and durability.
Adaptable To: The new engine is equipped with the Cat® Enhanced Engine Oil Filtration system that includes a Self-Cleaning Filter (SCF) and a Centrifugal Oil Filter (COF). This system eliminates conventional oil filter replacement and provides the potential to extend engine oil change intervals.
The four by four high altitude system consists of four low-pressure turbochargers feeding four high-pressure turbochargers. This system replaces the previous four by two high altitude system that consisted of four low-pressure turbochargers feeding two high-pressure turbochargers.
The new air system reduces the installed height on the engine. The new air system improves serviceability, durability, and lowers owning and operating costs over the lifetime of the engine.
Note: The 4X4 High altitude LMR Engine went effective with any high altitude build LAJ00660-Up.
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| Machine / Engine | Former (non- LMR) Engines | New (LMR) Engines | ||||
|---|---|---|---|---|---|---|
| Machine Sales Model | Machine Serial Prefix | Engine Description | Engine Part Number | Engine Serial Prefix | Engine Part Number | Engine Serial prefix |
| 797F | LAJ | High Altitude Arrangement C175 | LLM | 4X4 | ||
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| Feature | Benefits | Customer Value |
|---|---|---|
| Low Maintenance Ratio Engines | Reduced equipment downtime/ increased durability | Maximized uptime and revenue generating potential |
| Replaces cartridge oil filters with self cleaning filter (SCF) | Eliminates labor, filter cost, and filter disposal cost during oil filter change | |
| Reduced soot and contaminant levels in the oil | Provides opportunity to extend oil change intervals based on S.O.SSM oil analysis and potential for improved engine durability | |
| Eliminates oil filter changes | Reduced risk of contaminant exposure to lubrication system | |
| Aftermarket kits available for your fleet to upgrade current engines | Fleet standardization allows common maintenance practice by machine model | |
| Four by Four High Altitude System | Engine weight reduction compared to previous high altitude arrangement | Increased efficiency and productivity |
| Reduction in total installed height through improved packaging and structural design | Reduced vibration levels resulting increased durability and component life | |
| Fewer total parts per engine compared to previous high altitude arrangement | Lower engine rebuild cost compared to equivalent previous high altitude arrangement |
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| Quantity | Part Number | Part name |
|---|---|---|
| 2 | Pin As | |
| 2 | Lifting Eye | |
| 2 | Retainer As | |
| 4 | Hard Washer | |
| 4 | Bolt |
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| |
| Illustration 1 | g06312056 |
|
(1) Four by Four Air System
(2) Self-Cleaning Filter (3) Centrifugal Oil Filter | |
Illustration 2 shows the new four by four high altitude low maintenance ratio engine with the truck piping installed.
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| |
| Illustration 2 | g06312063 |
Caterpillar Information System:
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