STARTER-MOTOR 1621641 - 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.
Personal injury or death can result from machine articulation or movement.Machine frames can move and a person can be crushed.Connect the steering frame lock link between the front and rear frames before working on machine.
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.
Reference: For the correct procedure to relieve any hydraulic oil pressure that may be in the steering system, refer to the Service Manual module for Testing and Adjusting, "System Pressure - Release" for the machine that is being tested.
Table 1
Required Tools    
Part Number     Description     Qty    
1U-5481     Pressure Gauge Group     1    
1U-5482     Pressure Adapter Group     1    Note: The 836G Landfill Compactor may be equipped with either STIC steering or wheel steering.
Position the machine so that the machine is in the STRAIGHT AHEAD position.
Illustration 1 g00834018
Steering Frame Lock in the LOCKED Position
Move steering frame lock into the LOCKED position.
Engage the parking brake. Move the transmission direction control switch to the NEUTRAL position.
Illustration 2 g00558468
Location of the Steering Control Valve
Illustration 3 g00836904
Bumping or turning the steering wheel could cause excessive oil pressure in the hydraulic oil line that connects to the pressure gauge. The excessive oil pressure could cause damage to the pressure gauge.Do not bump or turn the steering wheel during the following steps.
Attach the correct hose assembly from the 1U-5482 Pressure Adapter Group to the pressure tap. Attach the opposite end of the hose assembly to a 0 to 16000 kPa (0 to 2300 psi) pressure gauge in the 1U-5481 Pressure Gauge Group. The pressure tap is located on the top of the steering control valve. The steering control valve is located on the left side of the machine under the access panel on the cab platform.
Start the engine. Operate the engine at high idle. Move the implement control lever to the LIFT position in order to increase the oil to normal operating temperature. The oil is at normal operating temperature when the hydraulic oil temperature gauge is between the first mark and the second mark.
After the oil has reached normal operating temperature, lower the work tool until the work tool is slightly off the ground. Run the engine at high idle.
Record the pressure reading on the pressure gauge. The pressure reading