- Asphalt Paver
- AP1000F (S/N: AC41-106,109-111)
- AP1055F (S/N: TJ51-115,117-118,121-121,220-220)
- Industrial Engine
- C7.1 (S/N: 8811-253,257-269,271-272,274-274,276-309,313-373,375-382,386-448,450-461,463-523,525-539,546-551,554-591,593-597,599-600,602-602,604-607,609-609,611-618,620-621,627-627,634-634,638-657,684-686,690-691,695-695,713-714,722-722,737-737,742-742,753-753,777-778,800-801,803-805,821-821,823-823,879-879,884-884)
- Motor Grader
- 120M Series 3 (S/N: N9H1-1)
- Track-Type Tractor
- D6N XL (S/N: GB6200-208)
- Wheel Loader
- 926M (S/N: LTE1-104,151-151,275-275,304-304,407-407)
- 930M (S/N: KTG1-134)
- 938M (S/N: J3R1-146,541-541,671-671,677-677)
- 930M (S/N: KTG1-134)
- Wheel Skidder
- 525D (S/N: GKP1-145,150-150,153-157,166-166,324-324)
- 535D (S/N: MTP1-1,102-121,127-127,143-143,145-145,148-148,153-153)
- 545D (S/N: KGP1-109,112-113)
- 555D (S/N: PGY102-104)
- 535D (S/N: MTP1-1,102-121,127-127,143-143,145-145,148-148,153-153)
- Wheeled Excavator
- M318F (S/N: F8B1-295,534-534,536-536,571-571,575-575,578-578,585-585,594-594,599-599)
- M320F (S/N: F2W1-172,320-321,324-324,328-328)
- MH3022 (S/N: FM21-277)
- M320F (S/N: F2W1-172,320-321,324-324,328-328)
Introduction
Do not perform any procedure in this Special Instruction until you have read the information and you understand the information.
There have been some isolated instances of issues with debris blocking up the pickup pipe for the manifold (DEF Heater). This has resulted in a lack of injection of Diesel Exhaust Fluid (DEF). The following diagnostic trouble codes may be displayed in the electronic service tool:
- E931 (2) Low Aftertreatment #1 SCR Dosing Reagent Absolute Pressure: Low - moderate severity (2)
- E1370 (2) Aftertreatment Diesel Exhaust Fluid Dosing Unit Loss of Prime
A new filter has been introduced for the Diesel Exhaust Fluid (DEF) tank adaptor. The new filter in the DEF tank adaptor helps to eliminate debris from entering the DEF system and reduces the occurrences of the E931 (2) and E1370 (2) diagnostic trouble codes being displayed.
Safety Section
| NOTICE |
|---|
|
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products. Dispose of all fluids according to local regulations and mandates. |
| |
| Illustration 1 | g00104545 |
Prevent the machine from movement. Park the machine on a level surface.
Attach a "Do Not Operate" warning tag or a similar warning tag to the start switch or to the controls before you service the equipment. These warning tags (Special Instruction, SEHS7332) are available from your Caterpillar dealer.
Required Parts
Refer to table 1 to select the correct DEF tank adaptor that is applicable to the relevant machine serial number prefix.
Refer to table 2 to select the correct DEF tank adaptor that is applicable to the relevant industrial engine arrangement number.
| Serial Number Prefix | Required DEF Tank Adaptor |
|---|---|
| (S/N: F8B) | 449-9106 |
| (S/N: GB6) | 449-9106 |
| (S/N: F2W) | 449-9106 |
| (S/N: FM2) | 449-9106 |
| (S/N: N9H) | 449-9106 |
| (S/N: J3R) | 449-9108 |
| (S/N: GKP) | 449-9108 |
| (S/N: MTP) | 449-9108 |
| (S/N: TJ5) | 449-9108 |
| (S/N: AC4) | 449-9108 |
| (S/N: KGP) | 449-9108 |
| (S/N: LTE) | 449-9108 |
| (S/N: KTG) | 449-9108 |
| (S/N: PGY) | 449-9108 |
| Industrial Engine Arrangement Number | Required DEF Tank Adaptor |
|---|---|
| 419-4590 | 449-9106 |
| 419-4643 | 449-9106 |
| 423-6189 | 449-9106 |
| 424-1149 | 449-9106 |
| 434-6428 | 449-9106 |
| 435-5707 | 449-9106 |
| 438-1371 | 449-9106 |
| 442-0614 | 449-9106 |
| 442-7801 | 449-9106 |
| 443-5956 | 449-9106 |
| 445-5317 | 449-9106 |
| 445-8685 | 449-9106 |
| 446-8876 | 449-9106 |
| 446-8877 | 449-9106 |
| 446-8880 | 449-9106 |
| 446-8881 | 449-9106 |
| 446-8882 | 449-9106 |
| 448-4219 | 449-9106 |
| 449-3367 | 449-9106 |
| 453-6259 | 449-9106 |
| 453-8919 | 449-9106 |
| 454-7051 | 449-9106 |
| 455-3504 | 449-9106 |
| 455-5743 | 449-9106 |
| 457-1972 | 449-9106 |
| 458-6520 | 449-9106 |
| 458-6521 | 449-9106 |
| 459-1674 | 449-9106 |
| 460-8906 | 449-9106 |
| 460-8907 | 449-9106 |
| 460-8908 | 449-9106 |
| 462-9581 | 449-9106 |
| 467-6783 | 449-9106 |
| 467-8362 | 449-9106 |
| 469-7963 | 449-9106 |
| 469-7964 | 449-9106 |
| 471-6748 | 449-9106 |
| 438-5974 | 449-9108 |
| 445-4845 | 449-9108 |
| 455-2411 | 449-9108 |
| 456-4706 | 449-9108 |
| 478-8548 | 449-9108 |
Installation Procedure
- Ensure that the area around the DEF tank adaptor is clean and free from debris.
Show/hide table
Illustration 2 g06014182 Typical example - Remove two screws (1) from existing DEF tank adaptor (2). Retain the two screws.
- Remove existing DEF tank adaptor (2) from DEF tank (3).
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Illustration 3 g06014188 Typical example - Obtain new DEF tank adaptor. Ensure that O-ring seal (4) is present in the new DEF tank adaptor.
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Illustration 4 g06014187 Typical example - Install new DEF tank adaptor (5) to DEF tank (3). Tighten the DEF tank adaptor hand tight.
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Illustration 5 g06014192 Typical example
(W) Minimum of15.7 mm (0.62 inch) , Maximum of16 mm (0.63 inch)
(X) Diameter of49 mm (1.93 inch)
(Y)23 mm (0.91 inch)
(Z)30 mm (1.18 inch) - Fabricate a suitable tool to achieve the tightening torque required to torque the new DEF tank adaptor to the DEF tank. Refer to illustration 5 for more information.
- Tighten the DEF tank adaptor (5) to a torque of
35 N·m (26 lb ft) . - Install two screws (1) into DEF tank adaptor (5). Tighten the self-tapping screws (1) securely.
Note: When the screws are tightened, ensure that the screws are parallel with the wall of the DEF tank adaptor.
