TUBE 5088086 - Caterpillar

Personal injury or death can result from escaping fluid under pressure.Escaping fluid under pressure, even a very small pin-hole size leak, can penetrate body tissue and cause serious injury and possible death. If fluid is injected into your skin, it must be treated immediately by a doctor familiar with this type of injury.Always use a board or cardboard when checking for a leak.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. 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 on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Prepare the machine for testing and adjusting.Reference: Testing and Adjusting, "Preparation for Troubleshooting"
Ensure that the hydraulic oil in the system is at normal operating temperature. To warm the hydraulic oil, operate the feed rollers for several minutes.
Illustration 1 g00874086
Place the harvester head in the HORIZONTAL position.
Shut off the engine.
Open the cover on the harvester head.
Illustration 2 g00876214
Control Valves ( HH300 Harvester Head) (1) Pressure tap "M4". (2) Pressure reducing valve "R4".
Illustration 3 g00876233
Control Valves ( HH500 CHW1-310 Harvester Head) (1) Pressure tap "PRM". (2) Pressure reducing valve "R4".
Illustration 4 g00954900
Control Valves ( HH500 CWH311-UP Harvester Head) (1) Pressure tap "PRM". (2) Pressure reducing valve "R4".
Illustration 5 g00876260
Control Valves ( HH700 Harvester Head) (1) Pressure tap "PRM". (2) Pressure reducing valve "R4".
If necessary, attach the adapter to the pressure tap (1). Attach the 198-4240 Digital Pressure Indicator to the pressure tap or the adapter. Set the pressure indicator to the "PSI" setting.
Start the engine. Press the operating mode switch in order to activate the working mode (wheel harvesters). Turn the engine speed dial until the engine is operating at 1300 rpm. Make sure that the switch for the controller is in the ON position.
Raise the harvester head approximately 0.9 m (3 ft) above the ground.
The feed roller arms will open automatically when the engine and the controller are turn ON. Read the pressure on the pressure indicator. The following pressures are for the feed roller arms.
Table 2
Pressure Settings    
13000 200 kPa (1885 30 psi)
Rubber wheels     HH300    
11000 200 kPa (1600 30 psi)
Steel rollers    
14000 200 kPa (2030 30 psi)     HH500 CWH1-310    
16000 200 kPa (2320 30 psi)
Rubber wheels     HH500 CWH311-UP    
12000 200 kPa (1740 30 psi)
Steel rollers    
18000 200 kPa (2610 30 psi)
Rubber wheels     HH700    
13000 200 kPa (1885 30 psi)
Steel rollers    
If the pressure for the feed roller arms is correct go to step 14. If the pressure is not correct proceed to step 11.
Loosen the locknut on pressure reducing valve (2) for the feed roller arms. Turn