2478878 KIT-SEAL Caterpillar parts
320D, 320D FM, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 321D LCR, 323D L, 323D LN, 323D SA, 324D, 324D L
Rating:
Alternative (cross code) number:
CA2478878
247-8878
2478878
CA2478878
247-8878
2478878
Weight: 0.56 pounds 0 kg.
EXCAVATOR,
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US$68.99
28 May 2025
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Seal Kit, Compatible with Caterpillar E320D Excavator Cylinder Repair Kit, 2478878, Replacement Part (E320D)
Generic Seal Kit, Compatible with Caterpillar E320D Excavator Cylinder Repair Kit, 2478878, Replacement Part
Generic Seal Kit, Compatible with Caterpillar E320D Excavator Cylinder Repair Kit, 2478878, Replacement Part
E320D E321D E323D Boom Sealing Kit 247-8878 2478878 Suitable for S-F N-K Hydraulic Cylinder Repair Kit(S-F)
YWDVAVAQ E320D E321D E323D Boom Sealing Kit 247-8878 2478878 Suitable for S-F N-K Hydraulic Cylinder Repair Kit
YWDVAVAQ E320D E321D E323D Boom Sealing Kit 247-8878 2478878 Suitable for S-F N-K Hydraulic Cylinder Repair Kit
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Compatible equipment models: 2478878:
Caterpillar parts catalog:
Information:
Removal Procedure
Do not allow dirt to enter the fuel system. Thoroughly clean the area around a fuel system component that will be disconnected. Fit a suitable cover over disconnected fuel system component.
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.Dispose of all fluids according to local regulations and mandates.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Note: Place identification marks on all hoses for installation purposes. Plug all hoses and all the ports in the fuel transfer pump. This helps prevent fluid loss, and this helps to keep contaminants from entering the system.
Turn the fuel supply to the OFF position.
Illustration 1 g01326306
Typical example
Note: The fuel transfer pump can be oriented in two positions. Before removing the fuel transfer pump from the cylinder block, note the orientation of flange (5) on fuel transfer pump (1) for assembly.
Loosen the hose clamps and disconnect the hoses (not shown) from fuel transfer pump (1).
Evenly loosen bolts (4) and remove fuel transfer pump (1) from the cylinder block. Note: In order to remove the fuel transfer pump, it may be necessary to rotate the crankshaft until the operating plunger of the fuel transfer pump is not under pressure.
Remove O-ring seal (3) from fuel transfer pump (1). Installation Procedure
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 2 g01326306
Typical example
Clean the mating surfaces of the cylinder block and flange (5) on the fuel transfer pump. Note: Ensure that the camshaft lobe for the fuel transfer pump is at minimum lift before the fuel transfer pump is installed. The fuel transfer pump can be oriented in two positions. Ensure that the fuel transfer pump is oriented in the correct position.
Install a new O-ring seal (3) to fuel transfer pump (1).
Lubricate the operating plunger of fuel transfer pump (1) with clean engine oil.
Position fuel transfer pump (1) on the cylinder block. Ensure that the operating plunger is positioned correctly on the camshaft lobe. Install bolts (4). Tighten the bolts to a torque of 6 N m (53 lb in).
Connect the hoses (not shown) to fuel transfer pump (1). Tighten the hose clamps. Note: The inlet for the fuel transfer pump can be rotated 360 degrees by loosening bolt (2). The fuel inlet is adjustable in 15 degree increments. If adjustment is made to the position of the fuel inlet, tighten bolt (2) to a torque of 2.5 N m (22 lb in).
Turn the fuel supply to the ON position.
Prime the fuel system. Refer to Systems Operation, Testing and Adjusting, "Fuel System - Prime" for additional information.
Do not allow dirt to enter the fuel system. Thoroughly clean the area around a fuel system component that will be disconnected. Fit a suitable cover over disconnected fuel system component.
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.Dispose of all fluids according to local regulations and mandates.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Note: Place identification marks on all hoses for installation purposes. Plug all hoses and all the ports in the fuel transfer pump. This helps prevent fluid loss, and this helps to keep contaminants from entering the system.
Turn the fuel supply to the OFF position.
Illustration 1 g01326306
Typical example
Note: The fuel transfer pump can be oriented in two positions. Before removing the fuel transfer pump from the cylinder block, note the orientation of flange (5) on fuel transfer pump (1) for assembly.
Loosen the hose clamps and disconnect the hoses (not shown) from fuel transfer pump (1).
Evenly loosen bolts (4) and remove fuel transfer pump (1) from the cylinder block. Note: In order to remove the fuel transfer pump, it may be necessary to rotate the crankshaft until the operating plunger of the fuel transfer pump is not under pressure.
Remove O-ring seal (3) from fuel transfer pump (1). Installation Procedure
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 2 g01326306
Typical example
Clean the mating surfaces of the cylinder block and flange (5) on the fuel transfer pump. Note: Ensure that the camshaft lobe for the fuel transfer pump is at minimum lift before the fuel transfer pump is installed. The fuel transfer pump can be oriented in two positions. Ensure that the fuel transfer pump is oriented in the correct position.
Install a new O-ring seal (3) to fuel transfer pump (1).
Lubricate the operating plunger of fuel transfer pump (1) with clean engine oil.
Position fuel transfer pump (1) on the cylinder block. Ensure that the operating plunger is positioned correctly on the camshaft lobe. Install bolts (4). Tighten the bolts to a torque of 6 N m (53 lb in).
Connect the hoses (not shown) to fuel transfer pump (1). Tighten the hose clamps. Note: The inlet for the fuel transfer pump can be rotated 360 degrees by loosening bolt (2). The fuel inlet is adjustable in 15 degree increments. If adjustment is made to the position of the fuel inlet, tighten bolt (2) to a torque of 2.5 N m (22 lb in).
Turn the fuel supply to the ON position.
Prime the fuel system. Refer to Systems Operation, Testing and Adjusting, "Fuel System - Prime" for additional information.
Parts kit Caterpillar catalog:
320D, 320D FM, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 320D2, 320D2 GC, 320D2 L, 320E, 320E L, 320E LN, 320E LRR, 320E RR, 321D LCR, 323D L, 323D LN, 323D SA, 323D2 L, 323E L, 324D, 324D L, 326D ...
324D, 324D L, 325D L, 326D L, 329D, 329D L, 330D, 330D L, 336D, 336D L
324D, 324D FM, 324D L, 324D LN, 324E L, 324E LN, 329E L, 329E LN
320D, 320D FM, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 323D L, 323D LN, 323D SA
320D, 320D L, 320D LN, 320D LRR, 320D2, 320D2 L, 323D L, 323D2 L
320D, 320D L, 320D LN, 320D LRR, 320D2, 320D2 L, 323D L, 323D2 L
320D, 320D FM, 320D L, 323D L, 323D LN, 323D SA, 325D, 325D L, 328D LCR, 329D, 329D L
320D, 320D L, 323D L, 323D LN, 323D SA, 325D, 325D L, 328D LCR, 329D, 329D L
320D, 320D L, 323D L, 325D L, 329D, 329D L
320D, 320D L, 320E L, 325D, 325D L, 328D LCR, 329D, 329D L
320D, 320D L, 320D2, 320D2 L, 320E, 320E L, 320E LN, 325D, 325D L, 328D LCR, 329D, 329D L, 329E, 329E L, 329E LN
320D, 320D L, 320E, 320E L, 320E LN, 325D, 325D L, 328D LCR, 329D, 329D L
320D, 324D, 324D L, 324E, 324E L, 324E LN, 326D L
2668014
KIT-SEAL
324D, 324D L
324D, 324D L
324D, 324D L
320D, 324D, 324D L
320D, 320D FM, 320D L, 320D LN, 320D LRR, 320D RR, 323D L, 323D LN, 324D, 324D L
324D, 324D FM, 324D L, 324E, 324E L, 324E LN, 326D L
324D, 324D L, 325D L, 326D L, 329D, 329D L, 330D, 330D L, 336D, 336D L
320D, 320D FM, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 320D2, 320D2 GC, 320D2 L, 320E, 320E L, 320E LN, 320E LRR, 320E RR, 321D LCR, 323D L, 323D LN, 323D SA, 323D2 L, 323E L, 324D, 324D L, 326D ...
320D, 320D FM, 320D FM RR, 320D L, 320D LRR, 320D RR, 320D2, 320D2 GC, 320D2 L, 320E L, 323D L, 323D2 L, 324D, 324D L, 324E, 324E L, 324E LN, 326D L
320D, 320D L, 320D LN, 320D LRR, 320D2, 320D2 L, 323D L, 323D2 L, 324D, 324D L
320D, 320D FM, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 323D L, 323D LN, 323D SA, 324D, 324D L
320D, 320D FM, 320D FM RR, 320D L, 320D LRR, 320D RR, 323D L, 324D, 324D L