PUMP GP-PISTON 2896385 - Caterpillar

Illustration 2 g01228922
Typical example of a retrofitting (5) 116-2652 Electrical Cable (6) 3S-2093 Cable Strap (7) 4P-8134 Clip (8) 5P-0537 Hard Washer Cable (5) is tied into a bundle by straps (6). The straps are secured to the panel with clips (7). Washers (8) are used between the clips and the rubber mounts for the panel.Normally, each thermocouple is wired directly to terminals at the pyrometer. This is the preferred method of wiring. For retrofitting of the pyrometer, cable (5) can be spliced to the wiring from the thermocouples.
Illustration 3 g01228930
Typical example of splicing (9) 2H-2965 Wire Splice (10) 126-9424 Heat Shrink Tube (11) 5P-6009 Heat Shrink Tube Crimp the ends of the wires into splices (9). Protect each splice with heat shrink tube (10). Additional protection is provided for each pair of splices by heat shrink tube (11) .Avoid any additional junctions and/or splices in order to ensure that an accurate signal is transmitted to the pyrometer.Unused Channels
The pyrometer is capable of monitoring 24 channels. The pyrometer is self-diagnostic. In order to avoid false diagnostics for the unused channels, the unused channels must be shorted. Do not wire the unused channels into the harness.For example, a six cylinder engine with one turbocharger will typically use eight channels. Six of the channels are used for thermocouples at the cylinder exhaust ports. One of the channels is used for the exhaust inlet to the turbocharger. The eighth channel is used for the exhaust outlet from the turbocharger. The remaining channels are not used.
Illustration 4 g01229012
Example of a jumper wire for an unused channelRefer to Illustration 4. Crimp a socket (2) onto each end of a jumper wire. Install the jumper wire into the appropriate terminals for each channel that is not used.Testing the Circuits for the Thermocouples
Disconnect the wiring for a thermocouple from the pyrometer before you test the wiring with an ohmmeter or other instrument. This will prevent possible damage to the pyrometer's sensitive circuitry.Wiring for the Output Switches
The pyrometer contains two output switches. The output switches are solid state. Each output switch is rated for a maximum of 2 amperes at 35 VDC. Each output switch is normally open.The output switches can be wired in order to activate alarms or shutdowns. For example, the number 1 output switch can be wired for an alarm and the number 2 output switch can be wired for a shutdown.Refer to Table 2 for identification of the terminals for the output switches.
Table 2
Terminals for the Output Switches    
Terminal    Output Switch    Function    
58     2     Return    
59     Output
60     1     Output    
61     Return Refer to Illustration 5 for an example of the wiring for the output switches. In this example, the outputs are used to control relays.
Illustration 5 g01230427
Example of the wiring for the output switchesInput for Engine Rotation
Terminal 62 is the input for engine rotation. Typically, this input is not used. When this input is not used, the