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TUBE AS 3728291 - Caterpillar

3728291 TUBE AS Caterpillar parts 988K TUBE
Alternative (cross code) number:
Caterpillar 3728291 TUBE AS
Weight: 18 pounds 8 kg.

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Compatible equipment models: 3728291:

WHEEL LOADER  988K   Caterpillar
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Remove all carbon deposits from the angled surface at the bottom of the cylinder head bore for the unit injector. Failure to clean this area may prevent the unit injector from seating properly. This could result in failure of the unit injector due to leakage of exhaust gas into the fuel passage.
It is very important for the cylinder head bore for the unit injector to be clean when the unit injector is replaced. Use the following procedure to clean the cylinder head bore for the unit injector.
Partial cross section of a cylinder head (1) Bore for the unit injector (2) Seat for the unit injector A fine grade of "Scotch Brite" material is the preferred material for cleaning. The product is listed in the "Tools and Shop Products Guide" in a roll as the 1U-5512 Cut/Polish Roll and in a sheet as the 8T-7765 Hand Pad.1. Place a 38 mm (1.5 in) square piece of "Scotch Brite" material on the end of a 9U-6862 Small Tapered Brush. The carbon in the cylinder head bore for the unit injector is not as difficult to remove as carbon in locations that are exposed to higher temperatures. The use of a power tool to rotate the cleaning material should not be necessary.2. Use a 4C-5027 Tap Wrench to hold the brush. Rotate the material against the lower surface of the cylinder head bore for the unit injector. Continue cleaning until the surface is smooth and shiny. To clean loose particles from the cylinder head bore for the unit injector, the 4C-6774 Vacuum Kit Gun is recommended. The tool is operated with compressed air.3. Remove all of the loose particles from the entire cylinder head bore for the unit injector.

Parts tube Caterpillar catalog:

2748359 TUBE AS
24M, 385C, 385C FS, 385C L, 385C L MH, 390D, 390D L, 390F L, 631E, 631G, 633E II, 637E, 637G, 657E, 657G, 772, 772G, 772G OEM, 834H, 834K, 836H, 836K, 988H, 988K, AD45B, AD55, C18, C18 I6, CX31-C18I, ...
3537174 TUBE
374F L, 390F L, 735B, 740B, 770G, 770G OEM, 772G, 772G OEM, 824K, 825K, 826K, 834K, 836K, 988K, C15, C18, D8T, D9T
4158037 TUBE AS
824K, 825K, 826K, 834K, 836K, 980M, 982M, 988K, C13, C15, C18
3710681 TUBE
826K, 836K, 988K
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