CUSHION ASSEM. 8K9100 - Caterpillar

Engine: C18 (S/N: GJE1-UP; JLE1-UP; EJG1-UP)Generator Set: C18 LOCOMOTIVE (S/N: EWS1-UP) C18 MARINE GS (S/N: GBM1-UP; CYN1-UP; GEN1-UP; MGS1-UP)Industrial Engine: C18 INDUSTRIAL (S/N: JDA1-UP; NBB1-UP; WJH1-UP; WRH1-UP)Marine Engine: C18 MARINE (S/N: PLE1-UP; CKH1-UP; GES1-UP; KJT1-UP) C18 MARINE ENG (S/N: J2K1-UP; T2P1-UP)Petroleum Engine: C18 PETROLEUM (S/N: WJW1-UP; WJY1-UP)Introduction
Do not perform any of the following procedure or order parts until you have read and understand the procedure. The procedure that follows below covers the break-in procedure for piston and piston pins that have been replaced.Break-In Procedure
There are two different procedures to follow for breaking in newly installed pistons and/or piston pins. One procedure covers if an engine is out of the hull and can be hooked up to a dynometer to run. The other procedure is for an engine that has been repaired while remaining in the hull. Make sure to choose the appropriate procedure depending upon the situation.Break-In Procedure Using Dynometer
Table 1 contains the settings and duration that the engine should be set on the dynometer to allow for sufficient break-in for the pistons and/or piston pins.
Table 1
Break-In Steps Using the Dynometer    873 Hp Rating    1001 Hp Rating    1136 Hp Rating    
Engine Speed (RPM)    Time (Minutes)    Power (Hp)    Power (Hp)    Power (Hp)    
1000     Until engine reaches operating temperature     83     83     94    
1200     10     142     142     161    
1400     10     226     226     256    
1600     10     337     337     382    
1800     10     480     480     544    
1900     10     564     564     640    
2000     15     658     658     747    
2100     15     762     762     865    
2200     15     Full Load     876     994    
2300     10     N/A     Full Load     Full Load    Break-In Procedure Using Sea Trial
Table 2 contains the settings and duration that the engine should be set on in a sea trial to allow for sufficient break-in for the pistons and/or piston pins.
Table 2
Break-In Steps Using the Sea Trial    
Engine Speed (RPM)    Time (Minutes)    
1000     Until engine reaches operating temperature    
1200     10    
1400     10    
1600     10    
1800     10    
1900     10    
2000     15    
2100     15    
2200     15    
2300 (1)     10    
( 1 ) Not applicable to the 873 HP Rating