GLOW PLUG GP 2831311 - Caterpillar

Table 1
Required Tools    
Part Number     Description     Qty    
8T-0856     Pressure Gauge     1    
6V-3014     Hose As     1    
6V-3989     Fitting     1    
6V-4143     Quick Connect Coupler     2    
Place the machine on level ground.
Stop the engine.
Release the pressure in the hydraulic system. Refer to Testing and Adjusting, "Hydraulic System Pressure - Release".
Illustration 1 g01156042
(1) Cover
Remove cover (1) from the machine in order to access the pressure tap for the pilot relief valve.
Illustration 2 g01156043
Front view of cab (2) Pilot pressure tap
Connect a 6000 kPa (870 psi) pressure gauge to pilot pressure tap (2) .
Start the engine.
Place the engine speed lever at the HIGH IDLE position. Refer to Testing and Adjusting, "Engine Performance - Test" for engine rpm settings.
Place the hydraulic activation control lever in the UNLOCKED position.
Increase the hydraulic oil temperature to 55° 5°C (131° 9°F).
Check the pilot relief valve setting at pilot pressure tap (2) .
The pilot relief valve setting should be 3800 200 kPa (550 30 psi). If the pilot relief valve setting is not within the specification, adjust the pilot relief valve.
Illustration 3 g01156197
View under the cab (3) Pilot relief valve (5) Filter
Illustration 4 g01958328
Pilot manifold (3) Pilot relief valve (4) Shims
Adjust the number of shims (4) in order to adjust pilot relief valve (3). Adding shims increases the pressure. Removing shims decreases the pressure.Note: Normal operation of the engine and pumps are necessary for the pressure adjustment. If the results of the pressure adjustments are not correct, then the engine and the pump characteristic curve needs to be checked.