ENGINE AR-PRIMARY 2341970 - Caterpillar

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the machine. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide", for tools and supplies suitable to collect and contain fluids in Caterpillar machines.Dispose of all fluids according to local regulations and mandates.
Table 1
Required Tools    
Tool     Part Number     Description     Qty    
A (1)     198-4234     Digital Indicator     1    
B (1)     198-4236     Adapter Cable As     1    
C (1)     198-4239     Pressure Sensor Gp 0-41300 kPa (0-6000 psi)     1    
D     6V-9830     Cap As     1    
E     6V-9509     Plug     1    
6V-8398 O-Ring Seal        
F     173-2464     Cap     1    
G     348-5430     Multi-Tool Gp     1    
( 1 ) Tool (A) , Tool (B) , and Tool (C) are part of the 198-4240 Digital Pressure Indicator Gp .
Drive the machine to a smooth, horizontal surface.
Illustration 1 g03334022
Move propel lever (1) to the NEUTRAL position.
Illustration 2 g03334023
Move parking brake switch (2) to the ON position.
Use throttle switch (3) in order to operate the engine in low idle.
Move engine start switch (4) to the OFF position.
Illustration 3 g03334024
Unhook latches (5) on each side of the machine, and open engine hood (6) .
Assemble the tooling. Connect Tool (B) to Tool (C) . Connect Tool (B) to Tool (A) .
Illustration 4 g03334025
Connect Tool (C) to pressure tap (7) on vibratory valve (8) .
Illustration 5 g03334027
Disconnect hose assembly (10) from the run of tee on vibratory valve (8) . Use Tool (D) to cap run of tee (9) . Use Tool (E) to plug the hose assembly.Note: Hose assembly (10) is the line to the fan motor.
Move engine start switch (4) to the START position. Release the switch when the engine starts.
Operate the engine at low idle for a few minutes.
Monitor the hydraulic oil temperature with Tool (G) . Operate the machine until the oil temperature reaches a minimum of 50° C (122° F).
Read pressure on Tool (A) . The vibratory relief pressure should be 26200 689 kPa (3800 100 psi).
Move engine start switch (4) to the OFF position.
If the pressure setting is within the specified range, go to Step 20. If the pressure setting is not within the specified range, go to Step 16.
Illustration 6 g03334029
Hold adjustment screw (11) in place and loosen locknut (12) on vibratory valve (8) .
In order to increase pressure, rotate adjustment screw (11) clockwise. In order to decrease pressure, rotate adjustment screw (11) counterclockwise.Note: One quarter turn of adjustment screw (11) changes the pressure by approximately 1500 kPa (218 psi).
Hold adjustment screw (11) in place and tighten locknut (12) .
Go to Step 10 and check the vibratory relief pressure.
Remove tooling from vibratory valve (8) .
Connect