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YOKE 1278320 - Caterpillar


1278320 YOKE Caterpillar parts D3C III, D4C III, D5C III
Rating:
48
Alternative (cross code) number:
CA1278320
127-8320
1278320
Caterpillar 1278320 YOKE
Weight: 3 pounds 1 kg.

Buy YOKE 1278320 Caterpillar genuine, new aftermarket tractor parts with delivery
TRACK-TYPE TRACTOR,

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$74.20

05 Nov 2025

US: aoligei auto
Dryowre 2pcs Tail Light Rear Left Right Driver Passenger Side Clear Lens Dark Red Housing Truck Tail Lights for Bronco 1990-1996 for F150 1990-1996 for F250 1990-1997 for F350 1990-1997 127-8320
Dryowre Fitment:for Ford,for Bronco 1990-1996,for F150 1990-1996,for F250 1990-1997,for F350 1990-1997 || Package Include: Driver Left Side&Passenger Right Side || Location: Left,Right,Rear || Part Number:E9TZ13405C,E9TZ-13404-C,FO2801105 90,E9TZ13404C,FO2800106,E9TZ-13405-C || Color:Dark Red Lens || Bulbs(Tail Light):Light Bulb Not Included || Housing Color:Dark Red || Lens Color:Clear || High Brightness: This item use high-brightness bulbs to ensure safer driving at night
$66.49

05 Nov 2025

US: Ltymbtgx_AutoPa
Ltymbtgx 2pcs Tail Light Rear Left Right Driver Passenger Side Clear Lens Dark Red Housing Truck Tail Lights for Bronco 1990-1996 for F150 1990-1996 for F250 1990-1997 for F350 1990-1997 127-8320
Ltymbtgx Fitment:for Ford,for Bronco 1990-1996,for F150 1990-1996,for F250 1990-1997,for F350 1990-1997 || Package Include: Driver Left Side&Passenger Right Side || Location: Left,Right,Rear || Part Number:E9TZ13405C,E9TZ-13404-C,FO2801105 90,E9TZ13404C,FO2800106,E9TZ-13405-C || Color:Dark Red Lens || Bulbs(Tail Light):Light Bulb Not Included || Housing Color:Dark Red || Lens Color:Clear || High Brightness: This item use high-brightness bulbs to ensure safer driving at night
$65.79

05 Nov 2025

US: DinDoong AutoPa
DinDoong 2pcs Tail Light Rear Left Right Driver Passenger Side Clear Lens Dark Red Housing Truck Lights for Bronco 1990-1996 for F150 1990-1996 for F250 1990-1997 for F350 1990-1997 127-8320
DinDoong Fitment:for Ford,for Bronco 1990-1996,for F150 1990-1996,for F250 1990-1997,for F350 1990-1997 || Package Include: Driver Left Side&Passenger Right Side || Location: Left,Right,Rear || Part Number:E9TZ13405C,E9TZ-13404-C,FO2801105 90,E9TZ13404C,FO2800106,E9TZ-13405-C || Color:Dark Red Lens || Bulbs(Tail Light):Light Bulb Not Included || Housing Color:Dark Red || Lens Color:Clear || High Brightness: This item use high-brightness bulbs to ensure safer driving at night
Number on catalog scheme: 1
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Compatible equipment models: 1278320:

TRACK-TYPE TRACTOR  D3C III   D4C III   D5C III   Caterpillar

Information:

If the engine is shutdown due to a low exhaust temperature, the power to the engine Electronic Control Module (ECM) must be cycled to restart the engine.Probable Causes
Codes
Parameters
Inlet air restriction
Misfire
Thermocouple
Valve lash
Low compressionRecommended Actions
Table 3
Troubleshooting Test Steps Values Results
1. Check for Codes
A. Connect Cat® Electronic Technician (ET) to the service tool connector.
B. Look for active codes that are associated with the system for the event code.
Codes
Result: An associated code is active.
Repair: Troubleshoot any associated codes before continuing with this test.
Result: A code is active or logged.
Proceed to Test Step 2.
2. Check for Incorrect Monitoring System Parameters
A. Connect Cat ET.
B. Use Cat ET to verify that the correct parameters are being used.
- Exhaust temperature module
- Exhaust port temperatures
Parameters
Result: The parameters are correct.
Proceed to Test Step 3.
Result: The parameters are not correct.
Repair: Input the correct parameters. Refer to Troubleshooting, "Event Codes" for additional information.
If the problem is not resolved, proceed to Test Step 3.
3. Check for a Restriction in the Inlet Air System
Note: Inlet air restriction can cause uneven exhaust port temperatures. Cylinders at the front half of the engine may have exhaust port temperatures that are lower than the exhaust port temperatures for the cylinders at the rear half of the engine by 10 to 20 °C (18 to 36 °F).
A. Check the air filter restriction indicator, if equipped. Refer to the Operation and Maintenance Manual for additional information.
B. Measure the inlet air restriction for each turbocharger. Refer to Troubleshooting, "Inlet Air Is Restricted" for additional information.
Restriction
Result: The inlet air restriction is OK.
Proceed to Test Step 4.
Result: The inlet air restriction is NOT OK. An imbalance in the system is discovered.
Repair: Repair or replace damaged inlet air system components. Equalize the inlet air restriction for each of the turbochargers.
If the problem is not resolved, proceed to Test Step 4.
4. Check for Operation with a Light Load
Note: Operation with a low load can result in low exhaust temperatures.
A. Operate the engine at low idle or near low idle to detect a misfire problem.
Misfire
Result: There is not a misfire.
Proceed to Test Step 5.
Result: There is a misfire.
Repair: Troubleshoot the cause of the misfire. Refer to Troubleshooting, "Engine Misfires, Runs Rough or Is Unstable" for additional information.
If the problem is not resolved, proceed to Test Step 5.
5. Check for Faulty Thermocouples
A. Observe the temperatures from the thermocouples after the engine is shut off.
Note: When the engine is operating properly, the temperatures from similar locations are reduced at a similar rate. Also, the temperatures from similar locations are comparable.
Thermocouples
Result: The thermocouples are OK.
Proceed to Test Step 6.
Result: The thermocouples are NOT OK.
Repair: Switch the suspect thermocouple for another thermocouple. If the temperature problem follows the thermocouple, replace the suspect thermocouple.
If the temperature problem stays at the original location of the suspect thermocouple, investigate the cause for the low temperature.
If the problem is not resolved, proceed to Test Step 6.
6. Check the Valve Lash
Note: The valve lash can affect the performance of the engine.
Valve Lash
Result: The

Caterpillar parts catalog:

Caterpillar parts catalog
D3C & D3C LGP, XL Series III Hystat Tractors 4KS00001-UP (MACHINE) POWERED BY 3046 Engine
D4C & D4C LGP, XL Series III Hystat Tractors 4LS00001-UP (MACHINE) POWERED BY 3046 Engine
D5C & D5C LGP, XL Series III Hystat Tractors 5HS00001-UP (MACHINE) POWERED BY 3046 Engine


Parts yoke Caterpillar catalog:

5G4381 YOKE AS
931B, 931C, 931C II, D3C II, D3C III, D4C III
6S7399 YOKE AS-IDLER
931B, 933, 933C, D3, D3B, D3C, D3C II, D3C III, D4C, D4C II, D4C III
8Y5151 YOKE
D3C II, D3C III, D4C III, D5C III
8Y6652 YOKE AS
939, 939C, D5C, D5C III
1558681 YOKE AS
939C, D5C III, D5G
1616181 YOKE AS
933C, 939C, D3C III, D4C III, D5C III
6Y2658 YOKE
D6H, D6H II, D6R, D6R II
1271999 YOKE-ROD END
D6E, D6F SR, D6G SR
9W9124 YOKE
561M, 561N, 613G, D5M, D5N
1084561 YOKE AS
561M, 561N, D5M, D5N
1086954 YOKE-UNIVERSAL JOINT
D6R, D6R II, D6R III, D6R STD, D6T, D6T LGP, D6T LGPPAT, D6T XL
1119886 YOKE
D5M, D6M, D6N
1086953 YOKE-UNIVERSAL JOINT
572R, 572R II, 587T, D7R, D7R II, D7R XR, PL87
1345185 YOKE-ANCHOR
583R, 583T, PL83, PL87
1616181 YOKE AS
933C, 939C, D3C III, D4C III, D5C III
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