Takeuchi TB175W, Руководство по ремонту

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III-75 TB175W
If your AC and heater visual, electrical and leak inspections don’t turn up any
problems, save time by hooking up the manifold gauge set before you make the
performance test. If you find a leak and can correct it easily by tightening a con -
nection, do so. But if too much refrigerant leaked out, you may have to add some
refrigerant to the system for an effective performance test. We will get into detail
on troubleshooting with gauges after we explain manifold gauge set installation
and adding refrigerant.
Manifold Gauge Set Installation
Never hook up the gauge set when the engine and air con-
ditioner are running. Be sure all the valves on the manifold
are closed all the way (turn them clockwise). Check the
hose connections on the manifold for tightness.
Locate the low and high side system service fittings and remove their protective
caps. Position or hang the manifold gauge set in a convenient location. Figure 8-2
illustrates a good example of manifold gauge set hookup in one service situation.
The manifold gauge set is a necessary tool in troubleshooting AC system prob-
lems. The following steps are performed during and after installing the manifold
gauge set:
1. Purging Air from the Gauge Set Hoses
2. Adding Refrigerant to the System
3. Stabilizing the AC System.
Troubleshooting & Service Procedures
CAUTION
Figure 8-2
A typical manifold gauge
set hookup is shown in this
illustration. The center hose
on the gauge set is connected
to the vacuum pump.