3731851 IDLER GP-FRONT Caterpillar parts
300.9D
Rating:
Alternative (cross code) number:
CA3731851
373-1851
3731851
CA3731851
373-1851
3731851
MINI HYD EXCAVATOR,
Compatible equipment models: 3731851:
Number on catalog scheme:
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Injection 3406, 3408 And 3412 Engines In All ApplicationsDescription of Change: The internal clearances have been increased in the 9L6884 Fuel Injection Nozzle Assemblies used in direct injection 3406, 3408 and 3412 Engines. Because of increased clearances, some test procedures and specifications for the 9L6884 Fuel Injection Nozzle Assemblies must be changed.
Make the changes which follow in, "Use Of 5P4150 Nozzle Testing Group And 8S2245 Nozzle Cleaning Kit," Special Instruction Form No. SEHS7292-02.
In the "Pressure Loss Specification" at the top of page 11, change the specification to: "Nozzle must have a loss of at least 200 psi (1379 kPa) in 30 seconds. A rapid loss of pressure, even to zero, is acceptable."
In the "Tip Leakage Test" on page 12, add to Step A:
"Wrap a clean shop towel around the lower part of the adapter. This prevents return leakage down the outside of the adapter which gives a false tip leakage indication."
Change Step B to: "Increase pressure to between 500 psi (3450 kPa) and 1000 psi (6875 kPa). Hold this pressure for 30 seconds." Also make the changes to the charts, Special Instruction, Form Numbers SEHS7311 and SEHS7350.
None of the other tests and specifications have been changed.
The new procedures and specifications also are good for the earlier 9L6884 Fuel Injection Nozzle Assemblies which have the smaller clearances.
Make the changes which follow in, "Use Of 5P4150 Nozzle Testing Group And 8S2245 Nozzle Cleaning Kit," Special Instruction Form No. SEHS7292-02.
In the "Pressure Loss Specification" at the top of page 11, change the specification to: "Nozzle must have a loss of at least 200 psi (1379 kPa) in 30 seconds. A rapid loss of pressure, even to zero, is acceptable."
In the "Tip Leakage Test" on page 12, add to Step A:
"Wrap a clean shop towel around the lower part of the adapter. This prevents return leakage down the outside of the adapter which gives a false tip leakage indication."
Change Step B to: "Increase pressure to between 500 psi (3450 kPa) and 1000 psi (6875 kPa). Hold this pressure for 30 seconds." Also make the changes to the charts, Special Instruction, Form Numbers SEHS7311 and SEHS7350.
None of the other tests and specifications have been changed.
The new procedures and specifications also are good for the earlier 9L6884 Fuel Injection Nozzle Assemblies which have the smaller clearances.
Caterpillar SIS machinery equipment:
Caterpillar parts catalog:
Parts idler Caterpillar catalog:
3535581
IDLER GP-FRONT
305.5E, 306, 306E
305.5E, 306, 306E
2487152
IDLER GP-FRONT
325D FM, 325D FM LL, 330D FM, 330D L, 330D MH, 345C, 345C L, 345C MH, 345D, 345D L, 345D L VG, 349D, 349D L, 568 FM LL
325D FM, 325D FM LL, 330D FM, 330D L, 330D MH, 345C, 345C L, 345C MH, 345D, 345D L, 345D L VG, 349D, 349D L, 568 FM LL
6Y1368
IDLER & BEARING AS
931C, D3B, D3C, D4C
931C, D3B, D3C, D4C
8Y5049
IDLER GP-FRONT
939, 939C, D5C, D5C III
939, 939C, D5C, D5C III
2586697
IDLER GP-TRACK
D6R II
D6R II
320 L, 325 L, 325 LN, OEMS
1017871
IDLER GP-FRONT
322 FM L, 325 FM L, 325 L, OEMS
322 FM L, 325 FM L, 325 L, OEMS
527, D6H, D6H II, D6H XL, D6H XR, D6R