7W3844 CARTRIDGE GP-TURBOCHARGER Caterpillar parts
3406B, D8N
Rating:
Alternative (cross code) number:
CA7W3844
7W-3844
7W3844
CA7W3844
7W-3844
7W3844
Weight: 22 pounds 10 kg.
TRACK-TYPE TRACTOR, TRUCK ENGINE,
You can buy:
US$598.28
14 Jul 2025
FridayParts
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Turbo S4DS006 Turbocharger 7W-3844 for Caterpillar CAT Engine 3406 3406B Tractor D8N
NAOFRIMA Part Numbers:7W-3844 || Application:for Caterpillar CAT Engine 3406 3406B Tractor D8N
NAOFRIMA Part Numbers:7W-3844 || Application:for Caterpillar CAT Engine 3406 3406B Tractor D8N
Compatible with Caterpillar CAT Engine 3406 3406B Turbocharger Turbo S4DS006 for Tractor D8N 7W-3844
Tcairzl Part Number:7W-3844 || Application:For Caterpillar CAT Engine 3406 3406B Tractor D8N
Tcairzl Part Number:7W-3844 || Application:For Caterpillar CAT Engine 3406 3406B Tractor D8N
Information:
Illustration 1 g00564355
7W-2743 Electronic Speed Switch (ESS) (1) Push button for Overspeed Verification (2) Reset button (3) Overspeed indicator lamp (4) Seal screw plug for adjusting the engine overspeed (5) Seal screw plug for adjusting the crank terminate speed (6) Seal screw plug for adjusting the oil step pressure speed settingThe calibration of the crank terminate adjustment can increase the crank terminate speed or the calibration of the crank terminate adjustment can decrease the crank terminate speed. The crank terminate speed determines when the starting motor is disengaged. The starting motor is disengaged when the system voltage is cancelled by the crank termination speed. At the crank terminate speed, the engine must be able to run without the assistance of the starting motor.
Remove the lockwire and the seal from seal screw plug (5). Remove seal screw plug (5) from the access hole for the crank terminate adjusting screw.
Use a small screwdriver to lightly turn the crank terminate adjusting screw in the direction of the "MAX" arrow or the clockwise direction. Turn the screw twenty times. The crank terminate adjusting screw will vary the setting of a potentiometer that is inside of the ESS. The crank terminate adjusting screw will not cause damage to the potentiometer. Also, the screw can not be removed if the screw is turned in the wrong direction.
Turn the crank terminate adjusting screw for twelve turns in the opposite direction of the "MAX" arrow or the counterclockwise direction. This will establish an approximate crank terminate setting.
Connect a voltmeter with the positive lead at terminal (ESS-12) and the negative lead at (ESS-5). Use a 6V-7070 Digital Multimeter or a voltmeter with the same accuracy. Start the engine. Record the engine rpm when the starting motor disengages. The starting motor disengages when the open circuit voltage is cancelled by the crank terminate setting. Refer to the Speed Specification Chart for the correct crank terminate setting.
If the setting in Step 4 is not correct, proceed with Steps 6, 7, and 8. If the setting is correct go to Step 8.
Stop the engine and turn the crank terminate adjusting screw for one full turn in the clockwise direction in order to increase the crank terminate speed. Turn the crank terminate adjusting screw for one full turn in the counterclockwise direction in order to decrease the crank terminate speed.
While the voltmeter is still connected, start the engine. Record the engine rpm when the starting motor disengages. The starting motor will disengage when the voltage is cancelled by the crank terminate speed. Repeat Steps 6 and 7 until the crank terminate speed is correct.
Install seal screw plug (5) in the access hole for the crank terminate adjusting screw. Tighten the screw to a torque of 0.20 0.03 N m (1.8 .3 lb in). Install the lockwire and the seal if the overspeed calibration and the oil step speed calibration are also complete.
Caterpillar SIS machinery equipment:
Caterpillar SIS
3406B TRUCK ENGINE 4MG00001-03599 PACCAR »
7W-3844
CARTRIDGE GP-TURBOCHARGER
3406B TRUCK ENGINE 4MG00001-03599 FORD »
7W-3844
CARTRIDGE GP-TURBOCHARGER
3406B TRUCK ENGINE 4MG00001-03599 FREIGHTLINER »
7W-3844
CARTRIDGE GP-TURBOCHARGER
3406B TRUCK ENGINE - ALL EXCEPT FORD,PACCAR & FREIGHTLINER 4MG00001-03599 »
7W-3844
CARTRIDGE GP-TURBOCHARGER
D8N TRACTOR 9TC00001-UP (MACHINE) POWERED BY 3406 ENGINE »
7W-3844
CARTRIDGE GP-TURBOCHARGER
Caterpillar parts catalog:
Parts cartridge Caterpillar catalog:
1W1653
CARTRIDGE GP-TURBOCHARGER
3406, 3406B, 3408, 3408B, 3408E, 3508, 3512, 3516, 631D, 69D, 769C, 769D, 771D, 834B, 836, 916, AD40, AD45, AE40, AE40 II, PM-565, PR-450, PR-450C
3406, 3406B, 3408, 3408B, 3408E, 3508, 3512, 3516, 631D, 69D, 769C, 769D, 771D, 834B, 836, 916, AD40, AD45, AE40, AE40 II, PM-565, PR-450, PR-450C
8N2361
CARTRIDGE GP-TURBOCHARGER
3306, 3406B, 627B
3306, 3406B, 627B
9N5263
CARTRIDGE GP-TURBOCHARGER
3406, 3406B, 3508, RR-250, SS-250
3406, 3406B, 3508, RR-250, SS-250
7C9896
CARTRIDGE GP-TURBOCHARGER
245B, 3406B, 621E, 621F, 623E, 627E, 627F
245B, 3406B, 621E, 621F, 623E, 627E, 627F
4N7601
CARTRIDGE GP-TURBOCHARGER
3208, 3406, 3406B, 3406C, 3408, 3412, 3412E, 3508, 637D, 768C, 769C, 771C, 988B, PM-565
3208, 3406, 3406B, 3406C, 3408, 3412, 3412E, 3508, 637D, 768C, 769C, 771C, 988B, PM-565
7C7631
CARTRIDGE GP-TURBOCHARGER
3406B, 3406C, D8N
3406B, 3406C, D8N
2W4126
CARTRIDGE GP-TURBOCHARGER
3406, 3406B
3406, 3406B
1411468
CARTRIDGE GP-TURBOCHARGER
3406B, 3406C, 3408C, 3412, 3412E, 834B, 988B, 988F II, C-15, HT400, PM-465, RM-350B, SM-350
3406B, 3406C, 3408C, 3412, 3412E, 834B, 988B, 988F II, C-15, HT400, PM-465, RM-350B, SM-350
6N6130
CARTRIDGE AS
3406, 3406B, 3406C, 3408
3406, 3406B, 3406C, 3408
1198514
CARTRIDGE GP-TURBOCHARGER
3406B, 3412, 3412C
3406B, 3412, 3412C
4N9538
CARTRIDGE GP-TURBOCHARGER
3406, 3406B, 3408
3406, 3406B, 3408
9L6239
CARTRIDGE GP-TURBOCHARGER
16G, 245, 3406, 3406B, 3408, 983B
16G, 245, 3406, 3406B, 3408, 983B
7C1777
CARTRIDGE GP-TURBOCHARGER
3406B, D8N
3406B, D8N
7W3570
CARTRIDGE GP-TURBOCHARGER
3512, 3516, G3516
3512, 3516, G3516
7E9167
CARTRIDGE GP-TURBOCHARGER
3306, 350
3306, 350
4W7635
CARTRIDGE GP-TURBOCHARGER
3408, 3508
3408, 3508
7W3291
CARTRIDGE GP-TURBOCHARGER
G3408, G3408B, G3412
G3408, G3408B, G3412