ELECTRONICS GP-MONITOR 3967478 - Caterpillar

Illustration 1 g00921376
Typical top view of the engine compression brakeUse this procedure for tightening the compression brake to the engine.
Tighten two center bolts (2) .Torque for center bolts ... 54 N m (40 lb ft)
Tighten mounting stud nut (5) .Torque for mounting stud nut ... 54 N m (40 lb ft)
Tighten two outer bolts (1) .Torque for outer bolts ... 54 N m (40 lb ft)
Tighten two center bolts (2) again.Torque for center bolts ... 109 N m (80 lb ft)
Tighten the mounting stud nut (5) again.Torque for mounting stud nut ... 109 N m (80 lb ft)
Tighten two outer bolts (1) again.Torque for outer bolts ... 109 N m (80 lb ft)
Prior to adjusting the lash setting for the engine compression brake, check the identification plate that is on the compression brake's casting in order to determine the model that is installed on your engine. You must have this model number and the engine's serial number prefix in order to determine the lash setting for your engine.
Table 1
Slave Piston Lash Setting
Jake Brake Compression Brakes    
Serial Number Prefix and Model Number (1)    Horsepower Rating    Slave Piston Lash Setting    
BNT1-UP
Jake Brake 340C     Less than 435 hp    
0.94 0.08 mm (0.037 0.003 inch)    
435 hp or more
0.84 0.08 mm (0.033 0.003 inch)    
9AP1-UP
Jake Brake 340C     All ratings    
0.94 0.08 mm (0.037 0.003 inch)    
BET1-UP
7RC1-UP
Jake Brake 340C     All ratings    
0.84 0.08 mm (0.033 0.003 inch)    
BET1-UP
BNT1-UP
9AR1-UP
7RC1-UP
Jake Brake 340D     All ratings    
0.64 0.08 mm (0.025 0.003 inch)    
( 1 ) Check the identification plate that is on the compression brake's casting in order to determine the model that is installed on your engine.Note: Refer to Testing and Adjusting, "Slave Piston Lash - Adjust" for the complete procedure for adjusting the slave piston lash. (3) Final torque for slave piston's adjusting screw locknut ... 34 N m (25 lb ft) (4) Final torque for solenoid valve ... 12.5 N m (9.22 lb ft)
Illustration 2 g00640539
Typical side view of the engine compression brake (6) Final torque for installation of the mounting stud into the cylinder head ... 88 N m (65.0 lb ft)