CONTROL GP-ACCELERATION 3178473 - Caterpillar

Test Procedure
Note: A temporary setting of the right forward travel crossover relief is required before the temporary setting of the main relief. Note: A temporary setting of the main relief valve is required before any crossover relief valves can be adjusted. Refer to Table 3 for temporary main relief setting for the function being tested.Note: A continuous relief of the valve for more than 10 seconds is not allowed.
Table 3
Function Temporary Main Relief Setting
Left Travel Forward 37000 500 kPa (5366 73 psi)
Reverse
Right Travel Forward
Reverse
Table 4
Relief Valve Pressure Change With One Turn Of Adjustment Screw
Main relief valve 4430 kPa (650 psi)
Crossover relief valves 4230 kPa (625 psi) Note: Pressure values in Table 4 are approximate values. Use a pressure gauge for adjustment.
Illustration 4 g01445367
Travel brake valve (left side)
(18) Locknut
(19) Adjustment screw
(20) Crossover relief valve (forward left travel)
(21) Crossover relief valve (reverse left travel)
(22) Locknut
(23) Adjustment screw
Illustration 5 g03324793
Sprocket (left track)
(16) Sprocket
(G) 418-3610 Blocker Pin
Mark the original position of the right forward travel crossover relief valve.
Loosen the locknut for the right forward travel crossover relief valve. Turn