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Engine/Gear Parameters
Top Engine Limiting ( TEL)
OEM
Description:
Top Engine Limit (TEL) sets the maximum engine rpm
value (The 3116 HEUI, 3126B and 3126 HEUI are not
programmable).
Note: This programmable feature is only available on
1998 and older engines.
Note: Lockable on Pre-EPA’07 Software Only
Available:
1998 and older C-10, C-12, 3176B and 3406E truck
engines.
Range:
Engine
Range
Cat
Default IncrementMinimum Maximum
C-10, C-12, 3176B and
3406E
1600 rpm 2120 rpm Varies by
Rating
1 rpm
3116 HEUI
(Except 275 hp [205
kW])
N/A N/A 2725 rpm N/A
3116 HEUI
(275 hp [ 205 kW])
N/A N/A 2640 rpm N/A
3126 HEUI N/A N/A 2640 rpm N/A
3126B Basic N/A N/A 2640 rpm N/A
3126B Full Feature N/A N/A 2640 rpm* N/A
* Select rating of the 3126B will have a different Top Engine Limit
Advantage:
Lower maximum engine rpm limts can save fuel. Some
applications, including automatic transmissions, require
1900+ rpm, This feature allows the fl exibility to program
an operating range to meet your specifi c need.
Disadvantages:
Most applications can be effectively accomplished
without taking an engine above 1800 rpm under power.
An engine which has a higher programmed TEL can
potentially use more fuel.
Recommendations:
✔ Caterpillar recommends programming TEL to
1820 rpm unless an automatic transmission requires
1800 - 2100 rpm for proper operatio. All other
settings should be application specifi c and
programmed on a case-by-case basis from
1600 - 2120 rpm.
✔ High performance operators and heavy haulers
should set TEL toward the maximum