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HOSE AS 2278202 - Caterpillar

2278202 HOSE AS Caterpillar parts 330C L, 330C MH, 330D MH HOSE
Alternative (cross code) number:
Caterpillar 2278202 HOSE AS

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Compatible equipment models: 2278202:

EXCAVATOR  330C L   330C MH   330D MH   Caterpillar
Number on catalog scheme: 2
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Illustration 1 g00274768
Typical Example (1) Clutch oil passage. (2) End plate. (3) Lock ring. (A) Running clearance.Use this procedure to check for proper clutch assembly.
Position the clutch assembly so that the shaft is in the vertical position. The end plate of the clutch that will be measured should face upward.
Make sure that end plate (2) is free.
Position the tip of a dial indicator on end plate (2) and zero the dial indicator.
Personal injury can result from applying air pressure without the lock ring securely in place. If the lock ring is not secure, the end plate and discs can suddenly come out with great force. Make sure lock ring is securely in place before applying air pressure to clutch pack.
Apply air pressure of approximately 140 kPa (20 psi) to appropriate passage (1) which is in the shaft for the clutch that is being checked.
End plate (2) should move and end plate (2) should contact lock ring (3). When the end plate is contacting lock ring (3), determine the distance that the end plate has moved from the dial indicator.
Release the air pressure in order to allow the dial indicator to return to zero.
Press down on end plate (2) in order to remove the free play.
Use the dial indicator to determine the distance the end plate (2) has moved.
The sum of the measurements taken in 5 and 8 is the running clearance of the clutch pack.Note: Even though running clearances on used clutch packs may be within the specification, one disc or two discs could be worn. Disassembling the clutch pack and individually measuring each disc for wear is the most effective way to measure clutch wear.
Table 1
Running Clearance (A) for Clutch Pack    
Clutch     Clearance of New Clutch     Maximum Clearance of Used Clutch    
Forward Low    
4.62 1.92 mm (0.18 0.075 inch)    
9.29 mm (0.366 inch)    
Forward High    
2.72 1.38 mm (.107 .054 inch)    
5.64 mm (.222 inch)    
4.62 1.92 mm (0.18 0.075 inch)    
9.29 mm (0.366 inch)    
First gear    
3.93 1.83 mm (.155 .072 inch)    
8.60 mm (.339 inch)    
Second gear    
2.72 1.38 mm (.107 .054 inch)    
5.64 mm (.222 inch)    
Third gear    
2.72 1.38 mm (.107 .054 inch)    
5.64 mm (.222 inch)    

Caterpillar parts catalog:

Caterpillar parts catalog
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